./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.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_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/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_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/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_82062422-66e8-4712-81dd-a45f2664e453/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:06:18,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:06:18,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 02:06:18,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:06:18,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:06:18,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:06:18,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:06:18,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:06:18,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:06:18,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:06:18,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:06:18,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:06:18,909 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:06:18,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:06:18,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:06:18,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:06:18,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:06:18,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:06:18,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:06:18,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:06:18,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:06:18,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:06:18,917 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 02:06:18,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:06:18,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:06:18,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:06:18,919 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:06:18,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:06:18,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:06:18,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:06:18,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:18,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:06:18,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:06:18,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:06:18,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:06:18,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:06:18,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:06:18,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:06:18,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:06:18,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:06:18,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:06:18,923 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_82062422-66e8-4712-81dd-a45f2664e453/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2023-11-29 02:06:19,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:06:19,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:06:19,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:06:19,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:06:19,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:06:19,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-29 02:06:21,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:06:22,126 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:06:22,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-29 02:06:22,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/data/f951ffa2a/a7e8a56919e5436e977cd29e2dd6e4d3/FLAG145544e78 [2023-11-29 02:06:22,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/data/f951ffa2a/a7e8a56919e5436e977cd29e2dd6e4d3 [2023-11-29 02:06:22,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:06:22,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:06:22,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:22,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:06:22,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:06:22,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d211b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22, skipping insertion in model container [2023-11-29 02:06:22,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:06:22,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:22,619 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:06:22,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:22,710 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:06:22,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22 WrapperNode [2023-11-29 02:06:22,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:22,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:22,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:06:22,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:06:22,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,759 INFO L138 Inliner]: procedures = 263, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-11-29 02:06:22,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:22,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:06:22,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:06:22,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:06:22,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:06:22,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:06:22,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:06:22,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:06:22,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (1/1) ... [2023-11-29 02:06:22,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:22,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:22,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:06:22,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:06:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 02:06:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:06:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 02:06:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 02:06:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:06:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:06:22,864 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 02:06:22,995 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:06:22,997 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:06:23,187 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:06:23,212 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:06:23,212 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 02:06:23,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:06:23 BoogieIcfgContainer [2023-11-29 02:06:23,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:06:23,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:06:23,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:06:23,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:06:23,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:06:22" (1/3) ... [2023-11-29 02:06:23,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc4c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:06:23, skipping insertion in model container [2023-11-29 02:06:23,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:22" (2/3) ... [2023-11-29 02:06:23,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc4c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:06:23, skipping insertion in model container [2023-11-29 02:06:23,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:06:23" (3/3) ... [2023-11-29 02:06:23,222 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-11-29 02:06:23,229 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:06:23,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:06:23,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 02:06:23,237 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:06:23,335 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:06:23,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 214 flow [2023-11-29 02:06:23,409 INFO L124 PetriNetUnfolderBase]: 6/104 cut-off events. [2023-11-29 02:06:23,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:06:23,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 6/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-11-29 02:06:23,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 214 flow [2023-11-29 02:06:23,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 211 flow [2023-11-29 02:06:23,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:06:23,436 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;@4e5387bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:06:23,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 02:06:23,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:06:23,456 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2023-11-29 02:06:23,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:06:23,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:23,457 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] [2023-11-29 02:06:23,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:23,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash 568433259, now seen corresponding path program 1 times [2023-11-29 02:06:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147763422] [2023-11-29 02:06:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:23,739 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 02:06:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:23,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147763422] [2023-11-29 02:06:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147763422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:23,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:06:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:06:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455656870] [2023-11-29 02:06:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:06:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:06:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:06:23,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 105 [2023-11-29 02:06:23,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 02:06:23,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:23,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 105 [2023-11-29 02:06:23,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:23,887 INFO L124 PetriNetUnfolderBase]: 14/225 cut-off events. [2023-11-29 02:06:23,887 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:06:23,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 225 events. 14/225 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 624 event pairs, 6 based on Foata normal form. 11/219 useless extension candidates. Maximal degree in co-relation 222. Up to 29 conditions per place. [2023-11-29 02:06:23,892 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 10 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-29 02:06:23,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 231 flow [2023-11-29 02:06:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:06:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:06:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-11-29 02:06:23,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2023-11-29 02:06:23,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-11-29 02:06:23,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-11-29 02:06:23,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:23,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-11-29 02:06:23,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:06:23,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 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 02:06:23,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 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 02:06:23,925 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 211 flow. Second operand 3 states and 290 transitions. [2023-11-29 02:06:23,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 231 flow [2023-11-29 02:06:23,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:06:23,933 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 216 flow [2023-11-29 02:06:23,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-11-29 02:06:23,939 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2023-11-29 02:06:23,939 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 216 flow [2023-11-29 02:06:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 02:06:23,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:23,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:06:23,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:23,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1694617169, now seen corresponding path program 1 times [2023-11-29 02:06:23,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:23,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730959116] [2023-11-29 02:06:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:24,093 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 02:06:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730959116] [2023-11-29 02:06:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730959116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749551668] [2023-11-29 02:06:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:24,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:24,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:24,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:06:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:24,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:06:24,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:24,253 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 02:06:24,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:24,295 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 02:06:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749551668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:06:24,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:06:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 02:06:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001051129] [2023-11-29 02:06:24,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:06:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:06:24,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 105 [2023-11-29 02:06:24,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 216 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 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 02:06:24,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:24,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 105 [2023-11-29 02:06:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:24,473 INFO L124 PetriNetUnfolderBase]: 14/232 cut-off events. [2023-11-29 02:06:24,473 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:06:24,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 232 events. 14/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 619 event pairs, 6 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 260. Up to 29 conditions per place. [2023-11-29 02:06:24,477 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 14 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2023-11-29 02:06:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 280 flow [2023-11-29 02:06:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:06:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 02:06:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 817 transitions. [2023-11-29 02:06:24,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8645502645502645 [2023-11-29 02:06:24,483 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 817 transitions. [2023-11-29 02:06:24,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 817 transitions. [2023-11-29 02:06:24,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:24,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 817 transitions. [2023-11-29 02:06:24,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 0 states have call successors, (0), 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 02:06:24,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 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 02:06:24,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 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 02:06:24,493 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 216 flow. Second operand 9 states and 817 transitions. [2023-11-29 02:06:24,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 280 flow [2023-11-29 02:06:24,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 110 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:06:24,498 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 264 flow [2023-11-29 02:06:24,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2023-11-29 02:06:24,499 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2023-11-29 02:06:24,499 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 264 flow [2023-11-29 02:06:24,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 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 02:06:24,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:24,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:24,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:06:24,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:24,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:24,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -881010897, now seen corresponding path program 2 times [2023-11-29 02:06:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074958151] [2023-11-29 02:06:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:24,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:24,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074958151] [2023-11-29 02:06:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074958151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739588046] [2023-11-29 02:06:24,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:06:24,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:24,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:24,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:24,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:06:24,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:06:24,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:24,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:06:24,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:25,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:06:25,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 02:06:25,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:06:25,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 02:06:25,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:06:25,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 02:06:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:06:25,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739588046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:25,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 02:06:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476341896] [2023-11-29 02:06:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:06:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:06:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:06:25,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2023-11-29 02:06:25,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 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 02:06:25,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:25,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2023-11-29 02:06:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:25,537 INFO L124 PetriNetUnfolderBase]: 150/807 cut-off events. [2023-11-29 02:06:25,537 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 02:06:25,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 807 events. 150/807 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4962 event pairs, 62 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 1083. Up to 240 conditions per place. [2023-11-29 02:06:25,545 INFO L140 encePairwiseOnDemand]: 94/105 looper letters, 30 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2023-11-29 02:06:25,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 137 transitions, 426 flow [2023-11-29 02:06:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:06:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:06:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-11-29 02:06:25,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8365079365079365 [2023-11-29 02:06:25,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-11-29 02:06:25,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-11-29 02:06:25,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:25,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-11-29 02:06:25,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 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 02:06:25,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:25,554 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:25,554 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 264 flow. Second operand 6 states and 527 transitions. [2023-11-29 02:06:25,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 137 transitions, 426 flow [2023-11-29 02:06:25,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 137 transitions, 420 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 02:06:25,560 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 408 flow [2023-11-29 02:06:25,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2023-11-29 02:06:25,561 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 21 predicate places. [2023-11-29 02:06:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 408 flow [2023-11-29 02:06:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 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 02:06:25,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:25,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:06:25,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:25,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1811549991, now seen corresponding path program 1 times [2023-11-29 02:06:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728579502] [2023-11-29 02:06:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:25,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728579502] [2023-11-29 02:06:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728579502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:25,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964762384] [2023-11-29 02:06:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:25,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:25,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:25,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:25,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:06:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:26,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:06:26,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:26,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964762384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:06:26,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:06:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 02:06:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734849575] [2023-11-29 02:06:26,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:06:26,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:06:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:06:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:06:26,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 105 [2023-11-29 02:06:26,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 408 flow. Second operand has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 0 states have call successors, (0), 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 02:06:26,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:26,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 105 [2023-11-29 02:06:26,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:26,465 INFO L124 PetriNetUnfolderBase]: 62/574 cut-off events. [2023-11-29 02:06:26,466 INFO L125 PetriNetUnfolderBase]: For 52/55 co-relation queries the response was YES. [2023-11-29 02:06:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 574 events. 62/574 cut-off events. For 52/55 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2689 event pairs, 11 based on Foata normal form. 4/542 useless extension candidates. Maximal degree in co-relation 751. Up to 64 conditions per place. [2023-11-29 02:06:26,469 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 18 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-11-29 02:06:26,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 147 transitions, 574 flow [2023-11-29 02:06:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:06:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 02:06:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1891 transitions. [2023-11-29 02:06:26,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8575963718820862 [2023-11-29 02:06:26,476 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1891 transitions. [2023-11-29 02:06:26,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1891 transitions. [2023-11-29 02:06:26,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:26,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1891 transitions. [2023-11-29 02:06:26,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.04761904761905) internal successors, (1891), 21 states have internal predecessors, (1891), 0 states have call successors, (0), 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 02:06:26,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 0 states have call successors, (0), 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 02:06:26,487 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 0 states have call successors, (0), 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 02:06:26,487 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 408 flow. Second operand 21 states and 1891 transitions. [2023-11-29 02:06:26,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 147 transitions, 574 flow [2023-11-29 02:06:26,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 147 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:06:26,494 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 538 flow [2023-11-29 02:06:26,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=538, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2023-11-29 02:06:26,495 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 46 predicate places. [2023-11-29 02:06:26,496 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 538 flow [2023-11-29 02:06:26,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 0 states have call successors, (0), 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 02:06:26,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:26,497 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:26,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:06:26,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:26,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:26,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1488763431, now seen corresponding path program 2 times [2023-11-29 02:06:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491064456] [2023-11-29 02:06:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:26,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:26,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491064456] [2023-11-29 02:06:26,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491064456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289440286] [2023-11-29 02:06:26,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:06:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:26,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:06:27,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:06:27,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:27,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:06:27,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:27,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:06:27,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 02:06:27,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:06:27,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 02:06:27,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:06:27,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-29 02:06:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 02:06:27,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289440286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:27,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2023-11-29 02:06:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271353611] [2023-11-29 02:06:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:27,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:06:27,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 105 [2023-11-29 02:06:27,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 0 states have call successors, (0), 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 02:06:27,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:27,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 105 [2023-11-29 02:06:27,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:28,165 INFO L124 PetriNetUnfolderBase]: 406/1535 cut-off events. [2023-11-29 02:06:28,165 INFO L125 PetriNetUnfolderBase]: For 365/421 co-relation queries the response was YES. [2023-11-29 02:06:28,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 1535 events. 406/1535 cut-off events. For 365/421 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 10142 event pairs, 128 based on Foata normal form. 25/1491 useless extension candidates. Maximal degree in co-relation 2816. Up to 462 conditions per place. [2023-11-29 02:06:28,177 INFO L140 encePairwiseOnDemand]: 86/105 looper letters, 105 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2023-11-29 02:06:28,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 231 transitions, 1116 flow [2023-11-29 02:06:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 800 transitions. [2023-11-29 02:06:28,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2023-11-29 02:06:28,180 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 800 transitions. [2023-11-29 02:06:28,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 800 transitions. [2023-11-29 02:06:28,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:28,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 800 transitions. [2023-11-29 02:06:28,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 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 02:06:28,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:28,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:28,187 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 538 flow. Second operand 10 states and 800 transitions. [2023-11-29 02:06:28,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 231 transitions, 1116 flow [2023-11-29 02:06:28,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 231 transitions, 1092 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 02:06:28,198 INFO L231 Difference]: Finished difference. Result has 158 places, 173 transitions, 804 flow [2023-11-29 02:06:28,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=804, PETRI_PLACES=158, PETRI_TRANSITIONS=173} [2023-11-29 02:06:28,199 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 56 predicate places. [2023-11-29 02:06:28,199 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 173 transitions, 804 flow [2023-11-29 02:06:28,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 0 states have call successors, (0), 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 02:06:28,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:28,200 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:28,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:06:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:28,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:28,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 504128436, now seen corresponding path program 1 times [2023-11-29 02:06:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:28,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483726664] [2023-11-29 02:06:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483726664] [2023-11-29 02:06:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483726664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854818778] [2023-11-29 02:06:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:28,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:28,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:28,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:06:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:28,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:06:28,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:28,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854818778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:06:29,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:06:29,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 02:06:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142484606] [2023-11-29 02:06:29,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:06:29,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:06:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:06:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:06:29,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 105 [2023-11-29 02:06:29,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 173 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 90.08695652173913) internal successors, (2072), 23 states have internal predecessors, (2072), 0 states have call successors, (0), 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 02:06:29,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:29,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 105 [2023-11-29 02:06:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:29,641 INFO L124 PetriNetUnfolderBase]: 170/1194 cut-off events. [2023-11-29 02:06:29,641 INFO L125 PetriNetUnfolderBase]: For 771/788 co-relation queries the response was YES. [2023-11-29 02:06:29,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 1194 events. 170/1194 cut-off events. For 771/788 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7201 event pairs, 42 based on Foata normal form. 3/1155 useless extension candidates. Maximal degree in co-relation 2230. Up to 156 conditions per place. [2023-11-29 02:06:29,649 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 21 selfloop transitions, 30 changer transitions 0/190 dead transitions. [2023-11-29 02:06:29,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 190 transitions, 1028 flow [2023-11-29 02:06:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 02:06:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 02:06:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2694 transitions. [2023-11-29 02:06:29,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8552380952380952 [2023-11-29 02:06:29,659 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2694 transitions. [2023-11-29 02:06:29,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2694 transitions. [2023-11-29 02:06:29,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:29,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2694 transitions. [2023-11-29 02:06:29,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 89.8) internal successors, (2694), 30 states have internal predecessors, (2694), 0 states have call successors, (0), 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 02:06:29,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 105.0) internal successors, (3255), 31 states have internal predecessors, (3255), 0 states have call successors, (0), 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 02:06:29,673 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 105.0) internal successors, (3255), 31 states have internal predecessors, (3255), 0 states have call successors, (0), 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 02:06:29,673 INFO L175 Difference]: Start difference. First operand has 158 places, 173 transitions, 804 flow. Second operand 30 states and 2694 transitions. [2023-11-29 02:06:29,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 190 transitions, 1028 flow [2023-11-29 02:06:29,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 190 transitions, 1024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:06:29,680 INFO L231 Difference]: Finished difference. Result has 189 places, 183 transitions, 952 flow [2023-11-29 02:06:29,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=952, PETRI_PLACES=189, PETRI_TRANSITIONS=183} [2023-11-29 02:06:29,682 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 87 predicate places. [2023-11-29 02:06:29,682 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 183 transitions, 952 flow [2023-11-29 02:06:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 90.08695652173913) internal successors, (2072), 23 states have internal predecessors, (2072), 0 states have call successors, (0), 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 02:06:29,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:29,683 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:29,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 02:06:29,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:29,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:29,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1195660400, now seen corresponding path program 2 times [2023-11-29 02:06:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:29,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985380639] [2023-11-29 02:06:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985380639] [2023-11-29 02:06:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985380639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:30,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:06:30,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:06:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750061413] [2023-11-29 02:06:30,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:30,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:06:30,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:06:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:06:30,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 105 [2023-11-29 02:06:30,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 183 transitions, 952 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 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 02:06:30,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:30,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 105 [2023-11-29 02:06:30,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:31,076 INFO L124 PetriNetUnfolderBase]: 687/2516 cut-off events. [2023-11-29 02:06:31,076 INFO L125 PetriNetUnfolderBase]: For 2076/2144 co-relation queries the response was YES. [2023-11-29 02:06:31,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 2516 events. 687/2516 cut-off events. For 2076/2144 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 17614 event pairs, 222 based on Foata normal form. 16/2418 useless extension candidates. Maximal degree in co-relation 5969. Up to 1156 conditions per place. [2023-11-29 02:06:31,091 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 77 selfloop transitions, 57 changer transitions 0/242 dead transitions. [2023-11-29 02:06:31,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 242 transitions, 1498 flow [2023-11-29 02:06:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:06:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:06:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-11-29 02:06:31,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2023-11-29 02:06:31,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-11-29 02:06:31,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-11-29 02:06:31,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:31,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-11-29 02:06:31,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 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 02:06:31,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:31,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:31,097 INFO L175 Difference]: Start difference. First operand has 189 places, 183 transitions, 952 flow. Second operand 6 states and 513 transitions. [2023-11-29 02:06:31,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 242 transitions, 1498 flow [2023-11-29 02:06:31,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 242 transitions, 1452 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 02:06:31,108 INFO L231 Difference]: Finished difference. Result has 181 places, 234 transitions, 1440 flow [2023-11-29 02:06:31,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1440, PETRI_PLACES=181, PETRI_TRANSITIONS=234} [2023-11-29 02:06:31,109 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 79 predicate places. [2023-11-29 02:06:31,109 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 234 transitions, 1440 flow [2023-11-29 02:06:31,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 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 02:06:31,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:31,109 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:06:31,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:31,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1173931621, now seen corresponding path program 1 times [2023-11-29 02:06:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584883928] [2023-11-29 02:06:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584883928] [2023-11-29 02:06:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584883928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:06:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:06:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960670030] [2023-11-29 02:06:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:31,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:06:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:06:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:06:31,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 105 [2023-11-29 02:06:31,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 234 transitions, 1440 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 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 02:06:31,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:31,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 105 [2023-11-29 02:06:31,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:32,427 INFO L124 PetriNetUnfolderBase]: 943/3241 cut-off events. [2023-11-29 02:06:32,427 INFO L125 PetriNetUnfolderBase]: For 6784/6876 co-relation queries the response was YES. [2023-11-29 02:06:32,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9615 conditions, 3241 events. 943/3241 cut-off events. For 6784/6876 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 23527 event pairs, 231 based on Foata normal form. 17/3158 useless extension candidates. Maximal degree in co-relation 9412. Up to 1523 conditions per place. [2023-11-29 02:06:32,458 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 116 selfloop transitions, 71 changer transitions 0/295 dead transitions. [2023-11-29 02:06:32,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 295 transitions, 2274 flow [2023-11-29 02:06:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:06:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:06:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-11-29 02:06:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2023-11-29 02:06:32,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-11-29 02:06:32,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-11-29 02:06:32,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:32,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-11-29 02:06:32,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 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 02:06:32,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:32,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:06:32,465 INFO L175 Difference]: Start difference. First operand has 181 places, 234 transitions, 1440 flow. Second operand 6 states and 513 transitions. [2023-11-29 02:06:32,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 295 transitions, 2274 flow [2023-11-29 02:06:32,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 295 transitions, 2174 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-11-29 02:06:32,490 INFO L231 Difference]: Finished difference. Result has 191 places, 287 transitions, 2122 flow [2023-11-29 02:06:32,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2122, PETRI_PLACES=191, PETRI_TRANSITIONS=287} [2023-11-29 02:06:32,492 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 89 predicate places. [2023-11-29 02:06:32,492 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 287 transitions, 2122 flow [2023-11-29 02:06:32,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 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 02:06:32,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:32,493 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:06:32,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:32,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash -673885599, now seen corresponding path program 1 times [2023-11-29 02:06:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053529735] [2023-11-29 02:06:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053529735] [2023-11-29 02:06:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053529735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412050046] [2023-11-29 02:06:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:33,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:33,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:33,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:06:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:33,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:33,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:33,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:34,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412050046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:34,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:34,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:06:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077316493] [2023-11-29 02:06:34,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:34,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:06:34,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:06:34,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 287 transitions, 2122 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:34,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:34,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:06:34,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:35,648 INFO L124 PetriNetUnfolderBase]: 1639/6283 cut-off events. [2023-11-29 02:06:35,648 INFO L125 PetriNetUnfolderBase]: For 13377/13585 co-relation queries the response was YES. [2023-11-29 02:06:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18816 conditions, 6283 events. 1639/6283 cut-off events. For 13377/13585 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 54283 event pairs, 269 based on Foata normal form. 49/6284 useless extension candidates. Maximal degree in co-relation 18596. Up to 941 conditions per place. [2023-11-29 02:06:35,747 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 89 selfloop transitions, 16 changer transitions 6/366 dead transitions. [2023-11-29 02:06:35,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 366 transitions, 2638 flow [2023-11-29 02:06:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 838 transitions. [2023-11-29 02:06:35,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7980952380952381 [2023-11-29 02:06:35,751 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 838 transitions. [2023-11-29 02:06:35,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 838 transitions. [2023-11-29 02:06:35,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:35,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 838 transitions. [2023-11-29 02:06:35,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.8) internal successors, (838), 10 states have internal predecessors, (838), 0 states have call successors, (0), 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 02:06:35,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:35,757 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:35,757 INFO L175 Difference]: Start difference. First operand has 191 places, 287 transitions, 2122 flow. Second operand 10 states and 838 transitions. [2023-11-29 02:06:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 366 transitions, 2638 flow [2023-11-29 02:06:35,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 366 transitions, 2468 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-11-29 02:06:35,827 INFO L231 Difference]: Finished difference. Result has 207 places, 302 transitions, 2080 flow [2023-11-29 02:06:35,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=207, PETRI_TRANSITIONS=302} [2023-11-29 02:06:35,829 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 105 predicate places. [2023-11-29 02:06:35,829 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 302 transitions, 2080 flow [2023-11-29 02:06:35,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:35,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:35,830 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:35,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:06:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:06:36,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:36,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -330234437, now seen corresponding path program 2 times [2023-11-29 02:06:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892250615] [2023-11-29 02:06:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:36,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:36,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892250615] [2023-11-29 02:06:36,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892250615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:36,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416413784] [2023-11-29 02:06:36,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:06:36,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:36,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:36,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:06:37,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:06:37,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:37,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:37,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:37,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:37,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:37,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416413784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:37,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:37,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:06:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237733716] [2023-11-29 02:06:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:37,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:06:37,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:06:37,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 302 transitions, 2080 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:37,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:37,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:06:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:39,025 INFO L124 PetriNetUnfolderBase]: 1928/7157 cut-off events. [2023-11-29 02:06:39,025 INFO L125 PetriNetUnfolderBase]: For 13963/14245 co-relation queries the response was YES. [2023-11-29 02:06:39,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22041 conditions, 7157 events. 1928/7157 cut-off events. For 13963/14245 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 64191 event pairs, 273 based on Foata normal form. 65/7161 useless extension candidates. Maximal degree in co-relation 21812. Up to 1233 conditions per place. [2023-11-29 02:06:39,068 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 112 selfloop transitions, 21 changer transitions 0/388 dead transitions. [2023-11-29 02:06:39,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 388 transitions, 2732 flow [2023-11-29 02:06:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 837 transitions. [2023-11-29 02:06:39,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7971428571428572 [2023-11-29 02:06:39,072 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 837 transitions. [2023-11-29 02:06:39,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 837 transitions. [2023-11-29 02:06:39,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:39,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 837 transitions. [2023-11-29 02:06:39,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.7) internal successors, (837), 10 states have internal predecessors, (837), 0 states have call successors, (0), 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 02:06:39,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:39,076 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:39,077 INFO L175 Difference]: Start difference. First operand has 207 places, 302 transitions, 2080 flow. Second operand 10 states and 837 transitions. [2023-11-29 02:06:39,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 388 transitions, 2732 flow [2023-11-29 02:06:39,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 388 transitions, 2731 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:06:39,119 INFO L231 Difference]: Finished difference. Result has 220 places, 314 transitions, 2223 flow [2023-11-29 02:06:39,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2223, PETRI_PLACES=220, PETRI_TRANSITIONS=314} [2023-11-29 02:06:39,120 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 118 predicate places. [2023-11-29 02:06:39,120 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 314 transitions, 2223 flow [2023-11-29 02:06:39,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:39,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:39,121 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:39,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 02:06:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:06:39,322 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:39,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1650079829, now seen corresponding path program 3 times [2023-11-29 02:06:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718280006] [2023-11-29 02:06:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718280006] [2023-11-29 02:06:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718280006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758656753] [2023-11-29 02:06:40,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:06:40,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:40,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:40,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:06:40,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:06:40,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:40,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:40,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:40,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758656753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:40,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:40,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:06:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320947339] [2023-11-29 02:06:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:40,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:06:40,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:06:40,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 314 transitions, 2223 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:40,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:40,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:06:40,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:42,684 INFO L124 PetriNetUnfolderBase]: 2230/8208 cut-off events. [2023-11-29 02:06:42,685 INFO L125 PetriNetUnfolderBase]: For 18749/19182 co-relation queries the response was YES. [2023-11-29 02:06:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26331 conditions, 8208 events. 2230/8208 cut-off events. For 18749/19182 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 74905 event pairs, 293 based on Foata normal form. 80/8221 useless extension candidates. Maximal degree in co-relation 26096. Up to 1329 conditions per place. [2023-11-29 02:06:42,740 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 116 selfloop transitions, 23 changer transitions 4/398 dead transitions. [2023-11-29 02:06:42,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 398 transitions, 3050 flow [2023-11-29 02:06:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2023-11-29 02:06:42,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8028571428571428 [2023-11-29 02:06:42,742 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2023-11-29 02:06:42,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2023-11-29 02:06:42,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:42,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2023-11-29 02:06:42,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 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 02:06:42,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:42,746 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:42,746 INFO L175 Difference]: Start difference. First operand has 220 places, 314 transitions, 2223 flow. Second operand 10 states and 843 transitions. [2023-11-29 02:06:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 398 transitions, 3050 flow [2023-11-29 02:06:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 398 transitions, 2984 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 02:06:42,803 INFO L231 Difference]: Finished difference. Result has 231 places, 326 transitions, 2389 flow [2023-11-29 02:06:42,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2389, PETRI_PLACES=231, PETRI_TRANSITIONS=326} [2023-11-29 02:06:42,804 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 129 predicate places. [2023-11-29 02:06:42,804 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 326 transitions, 2389 flow [2023-11-29 02:06:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:42,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:42,805 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:42,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:06:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:06:43,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1143289645, now seen corresponding path program 4 times [2023-11-29 02:06:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171176234] [2023-11-29 02:06:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171176234] [2023-11-29 02:06:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171176234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097254383] [2023-11-29 02:06:43,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:06:43,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:43,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:43,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:06:43,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:06:43,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:43,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 02:06:43,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:43,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:43,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:06:43,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 02:06:43,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 02:06:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:43,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 02:06:44,173 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:06:44,178 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:06:44,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 02:06:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-29 02:06:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:06:44,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:06:44,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:06:44,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-29 02:06:44,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:06:44,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 02:06:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:44,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097254383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:44,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:44,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2023-11-29 02:06:44,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818220472] [2023-11-29 02:06:44,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:44,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:06:44,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:06:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:06:45,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2023-11-29 02:06:45,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 326 transitions, 2389 flow. Second operand has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:06:45,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:45,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2023-11-29 02:06:45,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:50,272 INFO L124 PetriNetUnfolderBase]: 4712/13065 cut-off events. [2023-11-29 02:06:50,272 INFO L125 PetriNetUnfolderBase]: For 43625/44041 co-relation queries the response was YES. [2023-11-29 02:06:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49747 conditions, 13065 events. 4712/13065 cut-off events. For 43625/44041 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 115164 event pairs, 1071 based on Foata normal form. 90/13066 useless extension candidates. Maximal degree in co-relation 49506. Up to 3571 conditions per place. [2023-11-29 02:06:50,362 INFO L140 encePairwiseOnDemand]: 75/105 looper letters, 636 selfloop transitions, 102 changer transitions 0/836 dead transitions. [2023-11-29 02:06:50,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 836 transitions, 8109 flow [2023-11-29 02:06:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:06:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 02:06:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1277 transitions. [2023-11-29 02:06:50,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756613756613756 [2023-11-29 02:06:50,365 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1277 transitions. [2023-11-29 02:06:50,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1277 transitions. [2023-11-29 02:06:50,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:50,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1277 transitions. [2023-11-29 02:06:50,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 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 02:06:50,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 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 02:06:50,370 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 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 02:06:50,371 INFO L175 Difference]: Start difference. First operand has 231 places, 326 transitions, 2389 flow. Second operand 18 states and 1277 transitions. [2023-11-29 02:06:50,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 836 transitions, 8109 flow [2023-11-29 02:06:50,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 836 transitions, 7993 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 02:06:50,527 INFO L231 Difference]: Finished difference. Result has 257 places, 418 transitions, 3813 flow [2023-11-29 02:06:50,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3813, PETRI_PLACES=257, PETRI_TRANSITIONS=418} [2023-11-29 02:06:50,528 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 155 predicate places. [2023-11-29 02:06:50,528 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 418 transitions, 3813 flow [2023-11-29 02:06:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:06:50,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:50,530 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:50,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:06:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:06:50,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -290633884, now seen corresponding path program 1 times [2023-11-29 02:06:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236146967] [2023-11-29 02:06:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:51,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:51,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236146967] [2023-11-29 02:06:51,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236146967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:51,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112656066] [2023-11-29 02:06:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:51,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:51,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:51,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:51,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:06:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:51,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:51,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:51,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:51,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112656066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:06:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605054839] [2023-11-29 02:06:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:06:52,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:06:52,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 418 transitions, 3813 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:52,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:52,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:06:52,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:54,580 INFO L124 PetriNetUnfolderBase]: 2957/10666 cut-off events. [2023-11-29 02:06:54,581 INFO L125 PetriNetUnfolderBase]: For 37036/37750 co-relation queries the response was YES. [2023-11-29 02:06:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38140 conditions, 10666 events. 2957/10666 cut-off events. For 37036/37750 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 102911 event pairs, 350 based on Foata normal form. 110/10675 useless extension candidates. Maximal degree in co-relation 37887. Up to 1761 conditions per place. [2023-11-29 02:06:54,659 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 139 selfloop transitions, 38 changer transitions 2/500 dead transitions. [2023-11-29 02:06:54,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 500 transitions, 4868 flow [2023-11-29 02:06:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 846 transitions. [2023-11-29 02:06:54,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8057142857142857 [2023-11-29 02:06:54,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 846 transitions. [2023-11-29 02:06:54,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 846 transitions. [2023-11-29 02:06:54,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:54,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 846 transitions. [2023-11-29 02:06:54,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:06:54,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:54,664 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:54,664 INFO L175 Difference]: Start difference. First operand has 257 places, 418 transitions, 3813 flow. Second operand 10 states and 846 transitions. [2023-11-29 02:06:54,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 500 transitions, 4868 flow [2023-11-29 02:06:54,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 500 transitions, 4758 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-29 02:06:54,806 INFO L231 Difference]: Finished difference. Result has 270 places, 433 transitions, 4054 flow [2023-11-29 02:06:54,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4054, PETRI_PLACES=270, PETRI_TRANSITIONS=433} [2023-11-29 02:06:54,807 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 168 predicate places. [2023-11-29 02:06:54,807 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 433 transitions, 4054 flow [2023-11-29 02:06:54,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:54,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:54,808 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:54,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:06:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:06:55,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:55,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1849870609, now seen corresponding path program 5 times [2023-11-29 02:06:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531287008] [2023-11-29 02:06:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:06:55,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531287008] [2023-11-29 02:06:55,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531287008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771413527] [2023-11-29 02:06:55,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:06:55,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:55,866 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:55,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:06:56,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:06:56,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:06:56,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:56,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:56,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:06:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:06:56,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:06:56,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771413527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:56,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:56,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:06:56,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336494689] [2023-11-29 02:06:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:06:56,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:06:56,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 433 transitions, 4054 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:56,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:06:56,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:06:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:06:59,521 INFO L124 PetriNetUnfolderBase]: 3300/11889 cut-off events. [2023-11-29 02:06:59,521 INFO L125 PetriNetUnfolderBase]: For 44693/45398 co-relation queries the response was YES. [2023-11-29 02:06:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43389 conditions, 11889 events. 3300/11889 cut-off events. For 44693/45398 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 117512 event pairs, 384 based on Foata normal form. 128/11909 useless extension candidates. Maximal degree in co-relation 43128. Up to 2047 conditions per place. [2023-11-29 02:06:59,612 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 157 selfloop transitions, 39 changer transitions 0/517 dead transitions. [2023-11-29 02:06:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 517 transitions, 5206 flow [2023-11-29 02:06:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:06:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:06:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 846 transitions. [2023-11-29 02:06:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8057142857142857 [2023-11-29 02:06:59,614 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 846 transitions. [2023-11-29 02:06:59,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 846 transitions. [2023-11-29 02:06:59,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:06:59,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 846 transitions. [2023-11-29 02:06:59,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:06:59,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:59,617 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:59,617 INFO L175 Difference]: Start difference. First operand has 270 places, 433 transitions, 4054 flow. Second operand 10 states and 846 transitions. [2023-11-29 02:06:59,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 517 transitions, 5206 flow [2023-11-29 02:06:59,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 517 transitions, 5105 flow, removed 23 selfloop flow, removed 3 redundant places. [2023-11-29 02:06:59,772 INFO L231 Difference]: Finished difference. Result has 282 places, 448 transitions, 4300 flow [2023-11-29 02:06:59,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4300, PETRI_PLACES=282, PETRI_TRANSITIONS=448} [2023-11-29 02:06:59,773 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 180 predicate places. [2023-11-29 02:06:59,773 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 448 transitions, 4300 flow [2023-11-29 02:06:59,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:06:59,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:06:59,774 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:59,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:06:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:06:59,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:06:59,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1168499881, now seen corresponding path program 6 times [2023-11-29 02:06:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379086708] [2023-11-29 02:06:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379086708] [2023-11-29 02:07:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379086708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114325516] [2023-11-29 02:07:00,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:07:00,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:00,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:00,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:07:00,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:07:00,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:00,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:00,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:01,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:01,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114325516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:01,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:01,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:07:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461025971] [2023-11-29 02:07:01,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:01,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:07:01,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:01,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 448 transitions, 4300 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:01,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:01,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:01,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:04,785 INFO L124 PetriNetUnfolderBase]: 3656/13099 cut-off events. [2023-11-29 02:07:04,785 INFO L125 PetriNetUnfolderBase]: For 54790/55658 co-relation queries the response was YES. [2023-11-29 02:07:04,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49035 conditions, 13099 events. 3656/13099 cut-off events. For 54790/55658 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 132484 event pairs, 462 based on Foata normal form. 124/13081 useless extension candidates. Maximal degree in co-relation 48768. Up to 2187 conditions per place. [2023-11-29 02:07:04,886 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 154 selfloop transitions, 46 changer transitions 0/521 dead transitions. [2023-11-29 02:07:04,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 521 transitions, 5479 flow [2023-11-29 02:07:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 848 transitions. [2023-11-29 02:07:04,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8076190476190476 [2023-11-29 02:07:04,888 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 848 transitions. [2023-11-29 02:07:04,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 848 transitions. [2023-11-29 02:07:04,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:04,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 848 transitions. [2023-11-29 02:07:04,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 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 02:07:04,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:04,891 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:04,891 INFO L175 Difference]: Start difference. First operand has 282 places, 448 transitions, 4300 flow. Second operand 10 states and 848 transitions. [2023-11-29 02:07:04,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 521 transitions, 5479 flow [2023-11-29 02:07:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 521 transitions, 5395 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:05,098 INFO L231 Difference]: Finished difference. Result has 295 places, 469 transitions, 4717 flow [2023-11-29 02:07:05,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4238, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4717, PETRI_PLACES=295, PETRI_TRANSITIONS=469} [2023-11-29 02:07:05,099 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 193 predicate places. [2023-11-29 02:07:05,099 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 469 transitions, 4717 flow [2023-11-29 02:07:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:05,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:05,100 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:05,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:07:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:07:05,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -41966297, now seen corresponding path program 7 times [2023-11-29 02:07:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872748462] [2023-11-29 02:07:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:06,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872748462] [2023-11-29 02:07:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872748462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038492664] [2023-11-29 02:07:06,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:07:06,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:06,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:06,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:07:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:06,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:06,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:06,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:06,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:06,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038492664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:06,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:07:06,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222291368] [2023-11-29 02:07:06,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:06,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:07:06,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 469 transitions, 4717 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:06,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:10,463 INFO L124 PetriNetUnfolderBase]: 4262/15091 cut-off events. [2023-11-29 02:07:10,463 INFO L125 PetriNetUnfolderBase]: For 69156/70137 co-relation queries the response was YES. [2023-11-29 02:07:10,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57642 conditions, 15091 events. 4262/15091 cut-off events. For 69156/70137 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 158285 event pairs, 483 based on Foata normal form. 141/15094 useless extension candidates. Maximal degree in co-relation 57368. Up to 2594 conditions per place. [2023-11-29 02:07:10,604 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 177 selfloop transitions, 53 changer transitions 0/551 dead transitions. [2023-11-29 02:07:10,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 551 transitions, 6091 flow [2023-11-29 02:07:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 850 transitions. [2023-11-29 02:07:10,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2023-11-29 02:07:10,606 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 850 transitions. [2023-11-29 02:07:10,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 850 transitions. [2023-11-29 02:07:10,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:10,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 850 transitions. [2023-11-29 02:07:10,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 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 02:07:10,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:10,610 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:10,610 INFO L175 Difference]: Start difference. First operand has 295 places, 469 transitions, 4717 flow. Second operand 10 states and 850 transitions. [2023-11-29 02:07:10,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 551 transitions, 6091 flow [2023-11-29 02:07:10,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 551 transitions, 5998 flow, removed 46 selfloop flow, removed 1 redundant places. [2023-11-29 02:07:10,905 INFO L231 Difference]: Finished difference. Result has 310 places, 486 transitions, 5099 flow [2023-11-29 02:07:10,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5099, PETRI_PLACES=310, PETRI_TRANSITIONS=486} [2023-11-29 02:07:10,905 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 208 predicate places. [2023-11-29 02:07:10,905 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 486 transitions, 5099 flow [2023-11-29 02:07:10,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:10,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:10,906 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:10,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:07:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:07:11,106 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash 641869089, now seen corresponding path program 8 times [2023-11-29 02:07:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017407661] [2023-11-29 02:07:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017407661] [2023-11-29 02:07:11,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017407661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:11,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011479261] [2023-11-29 02:07:11,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:07:11,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:11,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:11,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:07:11,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:07:11,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:11,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:11,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:12,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:12,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011479261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:07:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291032677] [2023-11-29 02:07:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:07:12,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:12,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 486 transitions, 5099 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:12,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:12,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:12,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:16,464 INFO L124 PetriNetUnfolderBase]: 4882/17253 cut-off events. [2023-11-29 02:07:16,464 INFO L125 PetriNetUnfolderBase]: For 86326/87550 co-relation queries the response was YES. [2023-11-29 02:07:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67397 conditions, 17253 events. 4882/17253 cut-off events. For 86326/87550 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 187264 event pairs, 550 based on Foata normal form. 180/17275 useless extension candidates. Maximal degree in co-relation 67115. Up to 2941 conditions per place. [2023-11-29 02:07:16,654 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 190 selfloop transitions, 54 changer transitions 0/565 dead transitions. [2023-11-29 02:07:16,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 565 transitions, 6433 flow [2023-11-29 02:07:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 850 transitions. [2023-11-29 02:07:16,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2023-11-29 02:07:16,655 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 850 transitions. [2023-11-29 02:07:16,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 850 transitions. [2023-11-29 02:07:16,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:16,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 850 transitions. [2023-11-29 02:07:16,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 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 02:07:16,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:16,658 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:16,658 INFO L175 Difference]: Start difference. First operand has 310 places, 486 transitions, 5099 flow. Second operand 10 states and 850 transitions. [2023-11-29 02:07:16,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 565 transitions, 6433 flow [2023-11-29 02:07:17,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 565 transitions, 6352 flow, removed 40 selfloop flow, removed 1 redundant places. [2023-11-29 02:07:17,139 INFO L231 Difference]: Finished difference. Result has 324 places, 502 transitions, 5450 flow [2023-11-29 02:07:17,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=5018, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5450, PETRI_PLACES=324, PETRI_TRANSITIONS=502} [2023-11-29 02:07:17,140 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 222 predicate places. [2023-11-29 02:07:17,140 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 502 transitions, 5450 flow [2023-11-29 02:07:17,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:17,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:17,140 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:17,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:07:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:07:17,341 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:17,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2032132083, now seen corresponding path program 9 times [2023-11-29 02:07:17,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:17,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034795007] [2023-11-29 02:07:17,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:17,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:17,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034795007] [2023-11-29 02:07:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034795007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887573329] [2023-11-29 02:07:17,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:07:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:17,716 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:17,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:07:17,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:07:17,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:17,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:17,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:18,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:18,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887573329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:07:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822974822] [2023-11-29 02:07:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:18,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:07:18,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:18,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 502 transitions, 5450 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:18,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:18,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:18,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:23,252 INFO L124 PetriNetUnfolderBase]: 5137/18046 cut-off events. [2023-11-29 02:07:23,252 INFO L125 PetriNetUnfolderBase]: For 95044/96344 co-relation queries the response was YES. [2023-11-29 02:07:23,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71256 conditions, 18046 events. 5137/18046 cut-off events. For 95044/96344 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 196961 event pairs, 579 based on Foata normal form. 218/18096 useless extension candidates. Maximal degree in co-relation 70967. Up to 3106 conditions per place. [2023-11-29 02:07:23,422 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 189 selfloop transitions, 73 changer transitions 2/585 dead transitions. [2023-11-29 02:07:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 585 transitions, 7044 flow [2023-11-29 02:07:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:07:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:07:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1095 transitions. [2023-11-29 02:07:23,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8021978021978022 [2023-11-29 02:07:23,424 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1095 transitions. [2023-11-29 02:07:23,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1095 transitions. [2023-11-29 02:07:23,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:23,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1095 transitions. [2023-11-29 02:07:23,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.23076923076923) internal successors, (1095), 13 states have internal predecessors, (1095), 0 states have call successors, (0), 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 02:07:23,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:07:23,426 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:07:23,426 INFO L175 Difference]: Start difference. First operand has 324 places, 502 transitions, 5450 flow. Second operand 13 states and 1095 transitions. [2023-11-29 02:07:23,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 585 transitions, 7044 flow [2023-11-29 02:07:23,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 585 transitions, 6844 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:23,847 INFO L231 Difference]: Finished difference. Result has 339 places, 520 transitions, 5842 flow [2023-11-29 02:07:23,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5842, PETRI_PLACES=339, PETRI_TRANSITIONS=520} [2023-11-29 02:07:23,847 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 237 predicate places. [2023-11-29 02:07:23,847 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 520 transitions, 5842 flow [2023-11-29 02:07:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:23,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:23,848 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:23,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:07:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:07:24,048 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:24,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -118124435, now seen corresponding path program 10 times [2023-11-29 02:07:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:24,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773436666] [2023-11-29 02:07:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:24,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:24,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:24,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773436666] [2023-11-29 02:07:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773436666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714365057] [2023-11-29 02:07:24,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:07:24,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:24,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:24,412 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:24,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:07:24,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:07:24,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:24,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 02:07:24,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:24,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:24,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:07:24,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 02:07:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 02:07:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 02:07:24,907 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:07:24,912 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:07:24,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 02:07:24,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:24,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-29 02:07:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:07:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:07:25,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:07:25,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-29 02:07:25,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:07:25,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 02:07:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:25,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714365057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:25,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 24 [2023-11-29 02:07:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375414465] [2023-11-29 02:07:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:07:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:07:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:07:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2023-11-29 02:07:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 520 transitions, 5842 flow. Second operand has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:07:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2023-11-29 02:07:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:35,126 INFO L124 PetriNetUnfolderBase]: 9022/24920 cut-off events. [2023-11-29 02:07:35,127 INFO L125 PetriNetUnfolderBase]: For 192080/193116 co-relation queries the response was YES. [2023-11-29 02:07:35,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117260 conditions, 24920 events. 9022/24920 cut-off events. For 192080/193116 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 253669 event pairs, 2502 based on Foata normal form. 169/24851 useless extension candidates. Maximal degree in co-relation 116965. Up to 7850 conditions per place. [2023-11-29 02:07:35,386 INFO L140 encePairwiseOnDemand]: 75/105 looper letters, 1084 selfloop transitions, 137 changer transitions 0/1319 dead transitions. [2023-11-29 02:07:35,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1319 transitions, 16242 flow [2023-11-29 02:07:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:07:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 02:07:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1307 transitions. [2023-11-29 02:07:35,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6915343915343916 [2023-11-29 02:07:35,388 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1307 transitions. [2023-11-29 02:07:35,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1307 transitions. [2023-11-29 02:07:35,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:35,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1307 transitions. [2023-11-29 02:07:35,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.61111111111111) internal successors, (1307), 18 states have internal predecessors, (1307), 0 states have call successors, (0), 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 02:07:35,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 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 02:07:35,392 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 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 02:07:35,392 INFO L175 Difference]: Start difference. First operand has 339 places, 520 transitions, 5842 flow. Second operand 18 states and 1307 transitions. [2023-11-29 02:07:35,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1319 transitions, 16242 flow [2023-11-29 02:07:36,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1319 transitions, 16046 flow, removed 53 selfloop flow, removed 5 redundant places. [2023-11-29 02:07:36,044 INFO L231 Difference]: Finished difference. Result has 365 places, 606 transitions, 7553 flow [2023-11-29 02:07:36,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=5685, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7553, PETRI_PLACES=365, PETRI_TRANSITIONS=606} [2023-11-29 02:07:36,045 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 263 predicate places. [2023-11-29 02:07:36,045 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 606 transitions, 7553 flow [2023-11-29 02:07:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:07:36,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:36,046 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:36,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:07:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:36,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:36,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash 520776485, now seen corresponding path program 11 times [2023-11-29 02:07:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354784423] [2023-11-29 02:07:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354784423] [2023-11-29 02:07:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354784423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631927472] [2023-11-29 02:07:36,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:07:36,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:36,833 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:36,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:07:37,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:07:37,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:37,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:37,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:37,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:37,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:37,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631927472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:07:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846571591] [2023-11-29 02:07:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:07:37,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:37,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 606 transitions, 7553 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:37,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:37,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:37,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:42,612 INFO L124 PetriNetUnfolderBase]: 5194/18169 cut-off events. [2023-11-29 02:07:42,612 INFO L125 PetriNetUnfolderBase]: For 128133/129926 co-relation queries the response was YES. [2023-11-29 02:07:42,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76800 conditions, 18169 events. 5194/18169 cut-off events. For 128133/129926 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 198210 event pairs, 574 based on Foata normal form. 208/18187 useless extension candidates. Maximal degree in co-relation 76493. Up to 3146 conditions per place. [2023-11-29 02:07:42,789 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 205 selfloop transitions, 72 changer transitions 0/661 dead transitions. [2023-11-29 02:07:42,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 661 transitions, 8846 flow [2023-11-29 02:07:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 856 transitions. [2023-11-29 02:07:42,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8152380952380952 [2023-11-29 02:07:42,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 856 transitions. [2023-11-29 02:07:42,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 856 transitions. [2023-11-29 02:07:42,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:42,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 856 transitions. [2023-11-29 02:07:42,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 0 states have call successors, (0), 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 02:07:42,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:42,793 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:42,793 INFO L175 Difference]: Start difference. First operand has 365 places, 606 transitions, 7553 flow. Second operand 10 states and 856 transitions. [2023-11-29 02:07:42,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 661 transitions, 8846 flow [2023-11-29 02:07:43,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 661 transitions, 8418 flow, removed 175 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:43,379 INFO L231 Difference]: Finished difference. Result has 375 places, 614 transitions, 7569 flow [2023-11-29 02:07:43,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7569, PETRI_PLACES=375, PETRI_TRANSITIONS=614} [2023-11-29 02:07:43,379 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 273 predicate places. [2023-11-29 02:07:43,379 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 614 transitions, 7569 flow [2023-11-29 02:07:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:43,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:43,380 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:43,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:07:43,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:43,580 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:43,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1803849941, now seen corresponding path program 12 times [2023-11-29 02:07:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607218258] [2023-11-29 02:07:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:44,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:44,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607218258] [2023-11-29 02:07:44,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607218258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:44,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825688970] [2023-11-29 02:07:44,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:07:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:44,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:44,049 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:44,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:07:44,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:07:44,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:44,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:44,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:44,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:44,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:44,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825688970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:44,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:44,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:07:44,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828928841] [2023-11-29 02:07:44,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:44,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:07:44,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:44,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 614 transitions, 7569 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:44,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:44,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:44,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:49,465 INFO L124 PetriNetUnfolderBase]: 5165/18098 cut-off events. [2023-11-29 02:07:49,465 INFO L125 PetriNetUnfolderBase]: For 123358/125083 co-relation queries the response was YES. [2023-11-29 02:07:49,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75969 conditions, 18098 events. 5165/18098 cut-off events. For 123358/125083 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 197204 event pairs, 579 based on Foata normal form. 228/18138 useless extension candidates. Maximal degree in co-relation 75775. Up to 3132 conditions per place. [2023-11-29 02:07:49,678 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 197 selfloop transitions, 77 changer transitions 0/636 dead transitions. [2023-11-29 02:07:49,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 636 transitions, 8246 flow [2023-11-29 02:07:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 853 transitions. [2023-11-29 02:07:49,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8123809523809524 [2023-11-29 02:07:49,679 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 853 transitions. [2023-11-29 02:07:49,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 853 transitions. [2023-11-29 02:07:49,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:49,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 853 transitions. [2023-11-29 02:07:49,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 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 02:07:49,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:49,682 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:49,682 INFO L175 Difference]: Start difference. First operand has 375 places, 614 transitions, 7569 flow. Second operand 10 states and 853 transitions. [2023-11-29 02:07:49,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 636 transitions, 8246 flow [2023-11-29 02:07:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 636 transitions, 8120 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-29 02:07:50,289 INFO L231 Difference]: Finished difference. Result has 373 places, 590 transitions, 7239 flow [2023-11-29 02:07:50,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7239, PETRI_PLACES=373, PETRI_TRANSITIONS=590} [2023-11-29 02:07:50,290 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 271 predicate places. [2023-11-29 02:07:50,290 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 590 transitions, 7239 flow [2023-11-29 02:07:50,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:50,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:50,290 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:50,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:07:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:50,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:50,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 543194669, now seen corresponding path program 13 times [2023-11-29 02:07:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106060626] [2023-11-29 02:07:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106060626] [2023-11-29 02:07:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106060626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628822843] [2023-11-29 02:07:51,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:07:51,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:51,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:51,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:51,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:07:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:51,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:51,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:51,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:51,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628822843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:51,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:51,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:07:51,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783072421] [2023-11-29 02:07:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:51,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:51,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:07:51,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:51,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 590 transitions, 7239 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:51,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:51,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:51,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:57,063 INFO L124 PetriNetUnfolderBase]: 5458/18994 cut-off events. [2023-11-29 02:07:57,063 INFO L125 PetriNetUnfolderBase]: For 125703/127482 co-relation queries the response was YES. [2023-11-29 02:07:57,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78752 conditions, 18994 events. 5458/18994 cut-off events. For 125703/127482 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 208278 event pairs, 589 based on Foata normal form. 216/19013 useless extension candidates. Maximal degree in co-relation 78557. Up to 3311 conditions per place. [2023-11-29 02:07:57,447 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 214 selfloop transitions, 80 changer transitions 0/656 dead transitions. [2023-11-29 02:07:57,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 656 transitions, 8667 flow [2023-11-29 02:07:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:07:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:07:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1094 transitions. [2023-11-29 02:07:57,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014652014652015 [2023-11-29 02:07:57,448 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1094 transitions. [2023-11-29 02:07:57,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1094 transitions. [2023-11-29 02:07:57,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:57,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1094 transitions. [2023-11-29 02:07:57,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.15384615384616) internal successors, (1094), 13 states have internal predecessors, (1094), 0 states have call successors, (0), 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 02:07:57,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:07:57,451 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:07:57,451 INFO L175 Difference]: Start difference. First operand has 373 places, 590 transitions, 7239 flow. Second operand 13 states and 1094 transitions. [2023-11-29 02:07:57,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 656 transitions, 8667 flow [2023-11-29 02:07:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 656 transitions, 8495 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-29 02:07:58,053 INFO L231 Difference]: Finished difference. Result has 384 places, 609 transitions, 7676 flow [2023-11-29 02:07:58,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7676, PETRI_PLACES=384, PETRI_TRANSITIONS=609} [2023-11-29 02:07:58,054 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 282 predicate places. [2023-11-29 02:07:58,054 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 609 transitions, 7676 flow [2023-11-29 02:07:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:58,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:58,055 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:58,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:07:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:58,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:07:58,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1253509657, now seen corresponding path program 14 times [2023-11-29 02:07:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245096961] [2023-11-29 02:07:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:07:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245096961] [2023-11-29 02:07:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245096961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701378760] [2023-11-29 02:07:58,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:07:58,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:58,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:58,648 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:58,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:07:58,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:07:58,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:07:58,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:07:58,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:58,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:07:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:07:58,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:58,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701378760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:58,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:58,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:07:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430383589] [2023-11-29 02:07:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:07:59,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:07:59,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 609 transitions, 7676 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:07:59,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:59,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:07:59,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:04,977 INFO L124 PetriNetUnfolderBase]: 5441/18934 cut-off events. [2023-11-29 02:08:04,977 INFO L125 PetriNetUnfolderBase]: For 125104/126837 co-relation queries the response was YES. [2023-11-29 02:08:05,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78255 conditions, 18934 events. 5441/18934 cut-off events. For 125104/126837 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 206509 event pairs, 608 based on Foata normal form. 211/18955 useless extension candidates. Maximal degree in co-relation 78056. Up to 3303 conditions per place. [2023-11-29 02:08:05,286 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 197 selfloop transitions, 99 changer transitions 0/623 dead transitions. [2023-11-29 02:08:05,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 623 transitions, 8297 flow [2023-11-29 02:08:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:08:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:08:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1092 transitions. [2023-11-29 02:08:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8 [2023-11-29 02:08:05,289 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1092 transitions. [2023-11-29 02:08:05,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1092 transitions. [2023-11-29 02:08:05,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:05,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1092 transitions. [2023-11-29 02:08:05,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 0 states have call successors, (0), 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 02:08:05,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:05,293 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:05,293 INFO L175 Difference]: Start difference. First operand has 384 places, 609 transitions, 7676 flow. Second operand 13 states and 1092 transitions. [2023-11-29 02:08:05,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 623 transitions, 8297 flow [2023-11-29 02:08:06,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 623 transitions, 8013 flow, removed 75 selfloop flow, removed 6 redundant places. [2023-11-29 02:08:06,049 INFO L231 Difference]: Finished difference. Result has 395 places, 581 transitions, 7299 flow [2023-11-29 02:08:06,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=6763, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7299, PETRI_PLACES=395, PETRI_TRANSITIONS=581} [2023-11-29 02:08:06,050 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 293 predicate places. [2023-11-29 02:08:06,050 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 581 transitions, 7299 flow [2023-11-29 02:08:06,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:06,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:06,050 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:06,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:08:06,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:06,250 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:06,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1077575129, now seen corresponding path program 15 times [2023-11-29 02:08:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199516570] [2023-11-29 02:08:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:06,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:06,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199516570] [2023-11-29 02:08:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199516570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:06,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414938553] [2023-11-29 02:08:06,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:08:06,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:06,625 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:06,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:08:06,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:08:06,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:06,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:06,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:06,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:06,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414938553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:08:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128765997] [2023-11-29 02:08:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:06,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:08:07,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:07,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 581 transitions, 7299 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:07,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:07,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:07,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:12,747 INFO L124 PetriNetUnfolderBase]: 5451/18995 cut-off events. [2023-11-29 02:08:12,747 INFO L125 PetriNetUnfolderBase]: For 126509/128301 co-relation queries the response was YES. [2023-11-29 02:08:12,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78452 conditions, 18995 events. 5451/18995 cut-off events. For 126509/128301 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 207437 event pairs, 576 based on Foata normal form. 300/19109 useless extension candidates. Maximal degree in co-relation 78246. Up to 3314 conditions per place. [2023-11-29 02:08:13,071 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 226 selfloop transitions, 101 changer transitions 0/654 dead transitions. [2023-11-29 02:08:13,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 654 transitions, 8910 flow [2023-11-29 02:08:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:08:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:08:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 842 transitions. [2023-11-29 02:08:13,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2023-11-29 02:08:13,073 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 842 transitions. [2023-11-29 02:08:13,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 842 transitions. [2023-11-29 02:08:13,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:13,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 842 transitions. [2023-11-29 02:08:13,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.2) internal successors, (842), 10 states have internal predecessors, (842), 0 states have call successors, (0), 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 02:08:13,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:13,076 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:13,077 INFO L175 Difference]: Start difference. First operand has 395 places, 581 transitions, 7299 flow. Second operand 10 states and 842 transitions. [2023-11-29 02:08:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 654 transitions, 8910 flow [2023-11-29 02:08:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 654 transitions, 8727 flow, removed 39 selfloop flow, removed 6 redundant places. [2023-11-29 02:08:13,767 INFO L231 Difference]: Finished difference. Result has 403 places, 591 transitions, 7693 flow [2023-11-29 02:08:13,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7121, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7693, PETRI_PLACES=403, PETRI_TRANSITIONS=591} [2023-11-29 02:08:13,768 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 301 predicate places. [2023-11-29 02:08:13,768 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 591 transitions, 7693 flow [2023-11-29 02:08:13,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:13,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:13,769 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:13,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:08:13,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:13,969 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:13,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1772646477, now seen corresponding path program 16 times [2023-11-29 02:08:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444393943] [2023-11-29 02:08:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444393943] [2023-11-29 02:08:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444393943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747563468] [2023-11-29 02:08:14,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:08:14,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:14,341 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:14,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:08:14,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:08:14,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:14,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 02:08:14,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:14,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:08:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 02:08:14,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:14,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 02:08:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747563468] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:08:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 18] total 30 [2023-11-29 02:08:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532257285] [2023-11-29 02:08:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:08:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:08:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:08:15,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 105 [2023-11-29 02:08:15,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 591 transitions, 7693 flow. Second operand has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 02:08:15,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:15,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 105 [2023-11-29 02:08:15,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:21,216 INFO L124 PetriNetUnfolderBase]: 5668/19931 cut-off events. [2023-11-29 02:08:21,216 INFO L125 PetriNetUnfolderBase]: For 135749/137481 co-relation queries the response was YES. [2023-11-29 02:08:21,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82350 conditions, 19931 events. 5668/19931 cut-off events. For 135749/137481 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 217719 event pairs, 530 based on Foata normal form. 304/20061 useless extension candidates. Maximal degree in co-relation 82136. Up to 3567 conditions per place. [2023-11-29 02:08:21,535 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 215 selfloop transitions, 151 changer transitions 0/694 dead transitions. [2023-11-29 02:08:21,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 694 transitions, 9697 flow [2023-11-29 02:08:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:08:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:08:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1196 transitions. [2023-11-29 02:08:21,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8136054421768707 [2023-11-29 02:08:21,536 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1196 transitions. [2023-11-29 02:08:21,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1196 transitions. [2023-11-29 02:08:21,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:21,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1196 transitions. [2023-11-29 02:08:21,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.42857142857143) internal successors, (1196), 14 states have internal predecessors, (1196), 0 states have call successors, (0), 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 02:08:21,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 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 02:08:21,540 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 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 02:08:21,540 INFO L175 Difference]: Start difference. First operand has 403 places, 591 transitions, 7693 flow. Second operand 14 states and 1196 transitions. [2023-11-29 02:08:21,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 694 transitions, 9697 flow [2023-11-29 02:08:22,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 694 transitions, 9486 flow, removed 90 selfloop flow, removed 2 redundant places. [2023-11-29 02:08:22,239 INFO L231 Difference]: Finished difference. Result has 417 places, 624 transitions, 8500 flow [2023-11-29 02:08:22,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7546, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8500, PETRI_PLACES=417, PETRI_TRANSITIONS=624} [2023-11-29 02:08:22,240 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 315 predicate places. [2023-11-29 02:08:22,241 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 624 transitions, 8500 flow [2023-11-29 02:08:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 02:08:22,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:22,241 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:22,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:08:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:08:22,441 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1742503945, now seen corresponding path program 17 times [2023-11-29 02:08:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814745606] [2023-11-29 02:08:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:23,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814745606] [2023-11-29 02:08:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814745606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209855455] [2023-11-29 02:08:23,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:08:23,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:23,019 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:23,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:08:23,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:08:23,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:23,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:23,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:23,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:23,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:23,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209855455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:23,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:23,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:08:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723251373] [2023-11-29 02:08:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:23,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:08:23,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:23,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 624 transitions, 8500 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:23,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:23,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:23,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:29,793 INFO L124 PetriNetUnfolderBase]: 5691/19818 cut-off events. [2023-11-29 02:08:29,793 INFO L125 PetriNetUnfolderBase]: For 132201/134126 co-relation queries the response was YES. [2023-11-29 02:08:30,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82113 conditions, 19818 events. 5691/19818 cut-off events. For 132201/134126 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 215192 event pairs, 591 based on Foata normal form. 341/19972 useless extension candidates. Maximal degree in co-relation 81895. Up to 3510 conditions per place. [2023-11-29 02:08:30,141 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 231 selfloop transitions, 132 changer transitions 0/690 dead transitions. [2023-11-29 02:08:30,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 690 transitions, 9921 flow [2023-11-29 02:08:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:08:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:08:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1088 transitions. [2023-11-29 02:08:30,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7970695970695971 [2023-11-29 02:08:30,144 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1088 transitions. [2023-11-29 02:08:30,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1088 transitions. [2023-11-29 02:08:30,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:30,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1088 transitions. [2023-11-29 02:08:30,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.6923076923077) internal successors, (1088), 13 states have internal predecessors, (1088), 0 states have call successors, (0), 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 02:08:30,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:30,148 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:30,148 INFO L175 Difference]: Start difference. First operand has 417 places, 624 transitions, 8500 flow. Second operand 13 states and 1088 transitions. [2023-11-29 02:08:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 690 transitions, 9921 flow [2023-11-29 02:08:30,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 690 transitions, 9584 flow, removed 88 selfloop flow, removed 6 redundant places. [2023-11-29 02:08:30,928 INFO L231 Difference]: Finished difference. Result has 428 places, 633 transitions, 8726 flow [2023-11-29 02:08:30,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=8134, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8726, PETRI_PLACES=428, PETRI_TRANSITIONS=633} [2023-11-29 02:08:30,929 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 326 predicate places. [2023-11-29 02:08:30,929 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 633 transitions, 8726 flow [2023-11-29 02:08:30,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:30,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:30,930 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:30,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 02:08:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:31,130 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:31,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash -729226931, now seen corresponding path program 18 times [2023-11-29 02:08:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043239076] [2023-11-29 02:08:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:31,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:31,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043239076] [2023-11-29 02:08:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043239076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:31,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337934886] [2023-11-29 02:08:31,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:08:31,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:31,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:31,603 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:31,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:08:31,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:08:31,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:31,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:31,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:31,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:31,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337934886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:08:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463807214] [2023-11-29 02:08:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:08:32,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:32,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 633 transitions, 8726 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:32,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:32,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:32,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:38,662 INFO L124 PetriNetUnfolderBase]: 5980/20738 cut-off events. [2023-11-29 02:08:38,662 INFO L125 PetriNetUnfolderBase]: For 137640/139614 co-relation queries the response was YES. [2023-11-29 02:08:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85942 conditions, 20738 events. 5980/20738 cut-off events. For 137640/139614 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 226947 event pairs, 612 based on Foata normal form. 292/20836 useless extension candidates. Maximal degree in co-relation 85728. Up to 3679 conditions per place. [2023-11-29 02:08:38,983 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 270 selfloop transitions, 92 changer transitions 0/689 dead transitions. [2023-11-29 02:08:38,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 689 transitions, 10060 flow [2023-11-29 02:08:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:08:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:08:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1085 transitions. [2023-11-29 02:08:38,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2023-11-29 02:08:38,985 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1085 transitions. [2023-11-29 02:08:38,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1085 transitions. [2023-11-29 02:08:38,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:38,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1085 transitions. [2023-11-29 02:08:38,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.46153846153847) internal successors, (1085), 13 states have internal predecessors, (1085), 0 states have call successors, (0), 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 02:08:38,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:38,988 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:38,988 INFO L175 Difference]: Start difference. First operand has 428 places, 633 transitions, 8726 flow. Second operand 13 states and 1085 transitions. [2023-11-29 02:08:38,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 689 transitions, 10060 flow [2023-11-29 02:08:39,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 689 transitions, 9761 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-11-29 02:08:39,684 INFO L231 Difference]: Finished difference. Result has 437 places, 648 transitions, 8977 flow [2023-11-29 02:08:39,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=8445, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8977, PETRI_PLACES=437, PETRI_TRANSITIONS=648} [2023-11-29 02:08:39,685 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 335 predicate places. [2023-11-29 02:08:39,685 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 648 transitions, 8977 flow [2023-11-29 02:08:39,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:39,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:39,685 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:39,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 02:08:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:08:39,885 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:39,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1538074971, now seen corresponding path program 19 times [2023-11-29 02:08:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633605518] [2023-11-29 02:08:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633605518] [2023-11-29 02:08:40,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633605518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756694737] [2023-11-29 02:08:40,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:08:40,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:40,473 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:40,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 02:08:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:40,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:40,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:40,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:40,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756694737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:40,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:40,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:08:40,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969186157] [2023-11-29 02:08:40,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:40,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:40,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:40,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:40,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:08:41,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:41,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 648 transitions, 8977 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:41,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:41,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:41,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:47,429 INFO L124 PetriNetUnfolderBase]: 5957/20621 cut-off events. [2023-11-29 02:08:47,430 INFO L125 PetriNetUnfolderBase]: For 131849/133769 co-relation queries the response was YES. [2023-11-29 02:08:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 20621 events. 5957/20621 cut-off events. For 131849/133769 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 225045 event pairs, 605 based on Foata normal form. 293/20730 useless extension candidates. Maximal degree in co-relation 84420. Up to 3668 conditions per place. [2023-11-29 02:08:47,794 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 267 selfloop transitions, 98 changer transitions 0/692 dead transitions. [2023-11-29 02:08:47,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 692 transitions, 10090 flow [2023-11-29 02:08:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:08:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:08:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1089 transitions. [2023-11-29 02:08:47,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7978021978021979 [2023-11-29 02:08:47,796 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1089 transitions. [2023-11-29 02:08:47,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1089 transitions. [2023-11-29 02:08:47,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:47,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1089 transitions. [2023-11-29 02:08:47,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.76923076923077) internal successors, (1089), 13 states have internal predecessors, (1089), 0 states have call successors, (0), 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 02:08:47,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:47,799 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:47,799 INFO L175 Difference]: Start difference. First operand has 437 places, 648 transitions, 8977 flow. Second operand 13 states and 1089 transitions. [2023-11-29 02:08:47,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 692 transitions, 10090 flow [2023-11-29 02:08:48,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 692 transitions, 9926 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-29 02:08:48,542 INFO L231 Difference]: Finished difference. Result has 449 places, 654 transitions, 9184 flow [2023-11-29 02:08:48,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=8724, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9184, PETRI_PLACES=449, PETRI_TRANSITIONS=654} [2023-11-29 02:08:48,543 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 347 predicate places. [2023-11-29 02:08:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 654 transitions, 9184 flow [2023-11-29 02:08:48,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:48,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:48,544 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:48,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 02:08:48,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:48,745 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:48,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash 401607133, now seen corresponding path program 20 times [2023-11-29 02:08:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776809806] [2023-11-29 02:08:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776809806] [2023-11-29 02:08:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776809806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581756660] [2023-11-29 02:08:49,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:08:49,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:49,319 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:49,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 02:08:49,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:08:49,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:49,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:49,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:49,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:49,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581756660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:08:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692033384] [2023-11-29 02:08:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:49,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:49,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:08:50,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:50,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 654 transitions, 9184 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:50,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:50,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:50,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:08:56,547 INFO L124 PetriNetUnfolderBase]: 6212/21328 cut-off events. [2023-11-29 02:08:56,548 INFO L125 PetriNetUnfolderBase]: For 137360/139392 co-relation queries the response was YES. [2023-11-29 02:08:56,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87643 conditions, 21328 events. 6212/21328 cut-off events. For 137360/139392 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 234384 event pairs, 574 based on Foata normal form. 302/21434 useless extension candidates. Maximal degree in co-relation 87412. Up to 3788 conditions per place. [2023-11-29 02:08:56,880 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 312 selfloop transitions, 102 changer transitions 4/745 dead transitions. [2023-11-29 02:08:56,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 745 transitions, 11194 flow [2023-11-29 02:08:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:08:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:08:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1093 transitions. [2023-11-29 02:08:56,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8007326007326008 [2023-11-29 02:08:56,882 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1093 transitions. [2023-11-29 02:08:56,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1093 transitions. [2023-11-29 02:08:56,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:08:56,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1093 transitions. [2023-11-29 02:08:56,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.07692307692308) internal successors, (1093), 13 states have internal predecessors, (1093), 0 states have call successors, (0), 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 02:08:56,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:56,885 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:08:56,885 INFO L175 Difference]: Start difference. First operand has 449 places, 654 transitions, 9184 flow. Second operand 13 states and 1093 transitions. [2023-11-29 02:08:56,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 745 transitions, 11194 flow [2023-11-29 02:08:57,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 745 transitions, 11021 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-29 02:08:57,597 INFO L231 Difference]: Finished difference. Result has 462 places, 673 transitions, 9653 flow [2023-11-29 02:08:57,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=9024, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9653, PETRI_PLACES=462, PETRI_TRANSITIONS=673} [2023-11-29 02:08:57,598 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 360 predicate places. [2023-11-29 02:08:57,598 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 673 transitions, 9653 flow [2023-11-29 02:08:57,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:57,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:08:57,599 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:57,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 02:08:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:08:57,799 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:08:57,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1311065701, now seen corresponding path program 21 times [2023-11-29 02:08:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262911094] [2023-11-29 02:08:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:08:58,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262911094] [2023-11-29 02:08:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262911094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350745769] [2023-11-29 02:08:58,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:08:58,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:58,175 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:58,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 02:08:58,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:08:58,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:58,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:08:58,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:58,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:08:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:08:58,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350745769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:58,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:08:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965143459] [2023-11-29 02:08:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:58,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:08:58,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:08:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 673 transitions, 9653 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:08:58,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:08:58,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:08:58,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:05,732 INFO L124 PetriNetUnfolderBase]: 6224/21395 cut-off events. [2023-11-29 02:09:05,732 INFO L125 PetriNetUnfolderBase]: For 142585/144736 co-relation queries the response was YES. [2023-11-29 02:09:05,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88360 conditions, 21395 events. 6224/21395 cut-off events. For 142585/144736 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 235370 event pairs, 576 based on Foata normal form. 362/21556 useless extension candidates. Maximal degree in co-relation 88123. Up to 3800 conditions per place. [2023-11-29 02:09:06,047 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 320 selfloop transitions, 103 changer transitions 2/752 dead transitions. [2023-11-29 02:09:06,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 752 transitions, 11405 flow [2023-11-29 02:09:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:09:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:09:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 842 transitions. [2023-11-29 02:09:06,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2023-11-29 02:09:06,048 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 842 transitions. [2023-11-29 02:09:06,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 842 transitions. [2023-11-29 02:09:06,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:06,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 842 transitions. [2023-11-29 02:09:06,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.2) internal successors, (842), 10 states have internal predecessors, (842), 0 states have call successors, (0), 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 02:09:06,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:06,050 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:06,050 INFO L175 Difference]: Start difference. First operand has 462 places, 673 transitions, 9653 flow. Second operand 10 states and 842 transitions. [2023-11-29 02:09:06,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 752 transitions, 11405 flow [2023-11-29 02:09:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 752 transitions, 11178 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-29 02:09:07,030 INFO L231 Difference]: Finished difference. Result has 471 places, 684 transitions, 9965 flow [2023-11-29 02:09:07,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=9440, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9965, PETRI_PLACES=471, PETRI_TRANSITIONS=684} [2023-11-29 02:09:07,032 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 369 predicate places. [2023-11-29 02:09:07,032 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 684 transitions, 9965 flow [2023-11-29 02:09:07,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:07,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:07,032 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:07,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 02:09:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:07,233 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:07,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1859814639, now seen corresponding path program 22 times [2023-11-29 02:09:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087867116] [2023-11-29 02:09:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:07,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:07,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087867116] [2023-11-29 02:09:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087867116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:07,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137806495] [2023-11-29 02:09:07,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:09:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:07,801 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:07,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 02:09:07,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:09:07,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:09:07,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 02:09:07,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:08,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:09:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 02:09:08,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:09:08,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 02:09:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:09:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137806495] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:09:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 18] total 27 [2023-11-29 02:09:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145522126] [2023-11-29 02:09:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:09:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:09:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:09:08,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 105 [2023-11-29 02:09:08,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 684 transitions, 9965 flow. Second operand has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 02:09:08,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:09:08,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 105 [2023-11-29 02:09:08,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:16,373 INFO L124 PetriNetUnfolderBase]: 6190/21532 cut-off events. [2023-11-29 02:09:16,373 INFO L125 PetriNetUnfolderBase]: For 146197/148259 co-relation queries the response was YES. [2023-11-29 02:09:16,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89012 conditions, 21532 events. 6190/21532 cut-off events. For 146197/148259 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 237539 event pairs, 524 based on Foata normal form. 415/21768 useless extension candidates. Maximal degree in co-relation 88771. Up to 3892 conditions per place. [2023-11-29 02:09:16,790 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 249 selfloop transitions, 198 changer transitions 1/776 dead transitions. [2023-11-29 02:09:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 776 transitions, 11943 flow [2023-11-29 02:09:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:09:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:09:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1188 transitions. [2023-11-29 02:09:16,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8081632653061225 [2023-11-29 02:09:16,793 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1188 transitions. [2023-11-29 02:09:16,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1188 transitions. [2023-11-29 02:09:16,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:16,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1188 transitions. [2023-11-29 02:09:16,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.85714285714286) internal successors, (1188), 14 states have internal predecessors, (1188), 0 states have call successors, (0), 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 02:09:16,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 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 02:09:16,798 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 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 02:09:16,798 INFO L175 Difference]: Start difference. First operand has 471 places, 684 transitions, 9965 flow. Second operand 14 states and 1188 transitions. [2023-11-29 02:09:16,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 776 transitions, 11943 flow [2023-11-29 02:09:17,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 776 transitions, 11681 flow, removed 56 selfloop flow, removed 4 redundant places. [2023-11-29 02:09:17,761 INFO L231 Difference]: Finished difference. Result has 482 places, 710 transitions, 10644 flow [2023-11-29 02:09:17,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=9759, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10644, PETRI_PLACES=482, PETRI_TRANSITIONS=710} [2023-11-29 02:09:17,761 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 380 predicate places. [2023-11-29 02:09:17,762 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 710 transitions, 10644 flow [2023-11-29 02:09:17,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 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 02:09:17,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:17,762 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:17,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 02:09:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:17,962 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:17,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash -517227495, now seen corresponding path program 23 times [2023-11-29 02:09:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731589304] [2023-11-29 02:09:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731589304] [2023-11-29 02:09:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731589304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646447594] [2023-11-29 02:09:18,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:09:18,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:18,611 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:18,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 02:09:18,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:09:18,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:09:18,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:09:18,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:18,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:09:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:09:19,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646447594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:19,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:19,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:09:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912080828] [2023-11-29 02:09:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:19,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:09:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:09:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:09:19,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:09:19,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 710 transitions, 10644 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:19,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:09:19,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:09:19,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:26,978 INFO L124 PetriNetUnfolderBase]: 6502/22403 cut-off events. [2023-11-29 02:09:26,978 INFO L125 PetriNetUnfolderBase]: For 156014/158237 co-relation queries the response was YES. [2023-11-29 02:09:27,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93199 conditions, 22403 events. 6502/22403 cut-off events. For 156014/158237 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 248886 event pairs, 594 based on Foata normal form. 394/22598 useless extension candidates. Maximal degree in co-relation 92957. Up to 4040 conditions per place. [2023-11-29 02:09:27,357 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 325 selfloop transitions, 127 changer transitions 2/781 dead transitions. [2023-11-29 02:09:27,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 781 transitions, 12304 flow [2023-11-29 02:09:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:09:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:09:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1084 transitions. [2023-11-29 02:09:27,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7941391941391941 [2023-11-29 02:09:27,359 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1084 transitions. [2023-11-29 02:09:27,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1084 transitions. [2023-11-29 02:09:27,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:27,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1084 transitions. [2023-11-29 02:09:27,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.38461538461539) internal successors, (1084), 13 states have internal predecessors, (1084), 0 states have call successors, (0), 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 02:09:27,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:27,363 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:27,363 INFO L175 Difference]: Start difference. First operand has 482 places, 710 transitions, 10644 flow. Second operand 13 states and 1084 transitions. [2023-11-29 02:09:27,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 781 transitions, 12304 flow [2023-11-29 02:09:28,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 781 transitions, 12056 flow, removed 44 selfloop flow, removed 4 redundant places. [2023-11-29 02:09:28,210 INFO L231 Difference]: Finished difference. Result has 495 places, 723 transitions, 11005 flow [2023-11-29 02:09:28,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=10430, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11005, PETRI_PLACES=495, PETRI_TRANSITIONS=723} [2023-11-29 02:09:28,211 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 393 predicate places. [2023-11-29 02:09:28,211 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 723 transitions, 11005 flow [2023-11-29 02:09:28,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:28,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:28,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:28,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 02:09:28,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 02:09:28,412 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:28,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1338382405, now seen corresponding path program 24 times [2023-11-29 02:09:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754107817] [2023-11-29 02:09:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:28,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754107817] [2023-11-29 02:09:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754107817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:28,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391283199] [2023-11-29 02:09:28,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:09:28,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:28,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:28,761 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:28,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 02:09:28,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:09:28,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:09:28,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:09:28,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:29,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:09:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:09:29,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391283199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:29,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:29,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:09:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739393791] [2023-11-29 02:09:29,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:29,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:09:29,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:29,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:09:29,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:09:29,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:09:29,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 723 transitions, 11005 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:29,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:09:29,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:09:29,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:36,982 INFO L124 PetriNetUnfolderBase]: 6505/22350 cut-off events. [2023-11-29 02:09:36,982 INFO L125 PetriNetUnfolderBase]: For 153094/155414 co-relation queries the response was YES. [2023-11-29 02:09:37,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92529 conditions, 22350 events. 6505/22350 cut-off events. For 153094/155414 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 248156 event pairs, 593 based on Foata normal form. 391/22539 useless extension candidates. Maximal degree in co-relation 92334. Up to 4038 conditions per place. [2023-11-29 02:09:37,389 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 336 selfloop transitions, 114 changer transitions 2/779 dead transitions. [2023-11-29 02:09:37,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 779 transitions, 12428 flow [2023-11-29 02:09:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:09:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:09:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1083 transitions. [2023-11-29 02:09:37,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7934065934065934 [2023-11-29 02:09:37,391 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1083 transitions. [2023-11-29 02:09:37,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1083 transitions. [2023-11-29 02:09:37,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:37,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1083 transitions. [2023-11-29 02:09:37,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.3076923076923) internal successors, (1083), 13 states have internal predecessors, (1083), 0 states have call successors, (0), 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 02:09:37,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:37,396 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:37,396 INFO L175 Difference]: Start difference. First operand has 495 places, 723 transitions, 11005 flow. Second operand 13 states and 1083 transitions. [2023-11-29 02:09:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 779 transitions, 12428 flow [2023-11-29 02:09:38,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 779 transitions, 12247 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-29 02:09:38,294 INFO L231 Difference]: Finished difference. Result has 507 places, 731 transitions, 11268 flow [2023-11-29 02:09:38,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=10727, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11268, PETRI_PLACES=507, PETRI_TRANSITIONS=731} [2023-11-29 02:09:38,295 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 405 predicate places. [2023-11-29 02:09:38,295 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 731 transitions, 11268 flow [2023-11-29 02:09:38,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:38,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:38,295 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:38,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 02:09:38,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 02:09:38,496 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:38,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash -171195169, now seen corresponding path program 25 times [2023-11-29 02:09:38,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:38,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57261059] [2023-11-29 02:09:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:38,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:39,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57261059] [2023-11-29 02:09:39,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57261059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117032188] [2023-11-29 02:09:39,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:09:39,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:39,049 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:39,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 02:09:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:39,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:09:39,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:39,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:09:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:09:39,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117032188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:39,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:09:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604995944] [2023-11-29 02:09:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:39,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:09:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:09:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:09:39,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:09:39,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 731 transitions, 11268 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:39,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:09:39,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:09:39,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:47,345 INFO L124 PetriNetUnfolderBase]: 6801/23079 cut-off events. [2023-11-29 02:09:47,345 INFO L125 PetriNetUnfolderBase]: For 159196/161670 co-relation queries the response was YES. [2023-11-29 02:09:47,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95628 conditions, 23079 events. 6801/23079 cut-off events. For 159196/161670 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 257575 event pairs, 577 based on Foata normal form. 502/23381 useless extension candidates. Maximal degree in co-relation 95375. Up to 4153 conditions per place. [2023-11-29 02:09:47,806 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 340 selfloop transitions, 153 changer transitions 4/824 dead transitions. [2023-11-29 02:09:47,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 824 transitions, 13340 flow [2023-11-29 02:09:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:09:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:09:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1077 transitions. [2023-11-29 02:09:47,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.789010989010989 [2023-11-29 02:09:47,808 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1077 transitions. [2023-11-29 02:09:47,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1077 transitions. [2023-11-29 02:09:47,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:47,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1077 transitions. [2023-11-29 02:09:47,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.84615384615384) internal successors, (1077), 13 states have internal predecessors, (1077), 0 states have call successors, (0), 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 02:09:47,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:47,813 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:09:47,813 INFO L175 Difference]: Start difference. First operand has 507 places, 731 transitions, 11268 flow. Second operand 13 states and 1077 transitions. [2023-11-29 02:09:47,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 824 transitions, 13340 flow [2023-11-29 02:09:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 824 transitions, 13199 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-29 02:09:48,778 INFO L231 Difference]: Finished difference. Result has 521 places, 749 transitions, 11900 flow [2023-11-29 02:09:48,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11130, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11900, PETRI_PLACES=521, PETRI_TRANSITIONS=749} [2023-11-29 02:09:48,779 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 419 predicate places. [2023-11-29 02:09:48,779 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 749 transitions, 11900 flow [2023-11-29 02:09:48,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:48,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:48,780 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:48,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 02:09:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 02:09:48,980 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1561297537, now seen corresponding path program 26 times [2023-11-29 02:09:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:48,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013498869] [2023-11-29 02:09:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:49,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:49,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013498869] [2023-11-29 02:09:49,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013498869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:49,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72105651] [2023-11-29 02:09:49,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:09:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:49,561 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:49,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 02:09:49,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:09:49,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:09:49,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:09:49,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:49,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:09:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:09:49,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72105651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:49,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:49,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:09:49,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858530478] [2023-11-29 02:09:49,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:49,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:09:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:09:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:09:50,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:09:50,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 749 transitions, 11900 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:50,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:09:50,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:09:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:09:57,633 INFO L124 PetriNetUnfolderBase]: 6496/22153 cut-off events. [2023-11-29 02:09:57,633 INFO L125 PetriNetUnfolderBase]: For 151960/154229 co-relation queries the response was YES. [2023-11-29 02:09:57,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91804 conditions, 22153 events. 6496/22153 cut-off events. For 151960/154229 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 245502 event pairs, 550 based on Foata normal form. 455/22416 useless extension candidates. Maximal degree in co-relation 91545. Up to 3984 conditions per place. [2023-11-29 02:09:58,068 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 340 selfloop transitions, 145 changer transitions 4/816 dead transitions. [2023-11-29 02:09:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 816 transitions, 13523 flow [2023-11-29 02:09:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:09:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:09:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 839 transitions. [2023-11-29 02:09:58,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.799047619047619 [2023-11-29 02:09:58,070 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 839 transitions. [2023-11-29 02:09:58,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 839 transitions. [2023-11-29 02:09:58,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:09:58,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 839 transitions. [2023-11-29 02:09:58,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.9) internal successors, (839), 10 states have internal predecessors, (839), 0 states have call successors, (0), 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 02:09:58,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:58,072 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:58,072 INFO L175 Difference]: Start difference. First operand has 521 places, 749 transitions, 11900 flow. Second operand 10 states and 839 transitions. [2023-11-29 02:09:58,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 816 transitions, 13523 flow [2023-11-29 02:09:58,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 816 transitions, 13227 flow, removed 56 selfloop flow, removed 4 redundant places. [2023-11-29 02:09:58,937 INFO L231 Difference]: Finished difference. Result has 529 places, 752 transitions, 11964 flow [2023-11-29 02:09:58,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11550, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11964, PETRI_PLACES=529, PETRI_TRANSITIONS=752} [2023-11-29 02:09:58,938 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 427 predicate places. [2023-11-29 02:09:58,938 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 752 transitions, 11964 flow [2023-11-29 02:09:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:09:58,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:09:58,938 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:58,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 02:09:59,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 02:09:59,139 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:09:59,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1094165205, now seen corresponding path program 27 times [2023-11-29 02:09:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157588332] [2023-11-29 02:09:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:09:59,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157588332] [2023-11-29 02:09:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157588332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:59,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064616261] [2023-11-29 02:09:59,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:09:59,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:59,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:59,614 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:59,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 02:09:59,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:09:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:09:59,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:09:59,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:59,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:00,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064616261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:00,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:10:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433757595] [2023-11-29 02:10:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:10:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:10:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:10:00,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:00,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 752 transitions, 11964 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:00,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:00,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:00,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:08,328 INFO L124 PetriNetUnfolderBase]: 6790/22901 cut-off events. [2023-11-29 02:10:08,328 INFO L125 PetriNetUnfolderBase]: For 157956/160490 co-relation queries the response was YES. [2023-11-29 02:10:08,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95012 conditions, 22901 events. 6790/22901 cut-off events. For 157956/160490 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 254328 event pairs, 555 based on Foata normal form. 394/23100 useless extension candidates. Maximal degree in co-relation 94750. Up to 4192 conditions per place. [2023-11-29 02:10:08,767 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 376 selfloop transitions, 130 changer transitions 0/833 dead transitions. [2023-11-29 02:10:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 833 transitions, 13965 flow [2023-11-29 02:10:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:10:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:10:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2023-11-29 02:10:08,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.800952380952381 [2023-11-29 02:10:08,768 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2023-11-29 02:10:08,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2023-11-29 02:10:08,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:08,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2023-11-29 02:10:08,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 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 02:10:08,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:08,771 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:08,771 INFO L175 Difference]: Start difference. First operand has 529 places, 752 transitions, 11964 flow. Second operand 10 states and 841 transitions. [2023-11-29 02:10:08,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 833 transitions, 13965 flow [2023-11-29 02:10:09,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 833 transitions, 13647 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 02:10:09,762 INFO L231 Difference]: Finished difference. Result has 536 places, 766 transitions, 12282 flow [2023-11-29 02:10:09,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11688, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12282, PETRI_PLACES=536, PETRI_TRANSITIONS=766} [2023-11-29 02:10:09,763 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 434 predicate places. [2023-11-29 02:10:09,763 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 766 transitions, 12282 flow [2023-11-29 02:10:09,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:09,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:09,764 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:09,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 02:10:09,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 02:10:09,964 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:10:09,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:09,964 INFO L85 PathProgramCache]: Analyzing trace with hash 195043821, now seen corresponding path program 28 times [2023-11-29 02:10:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:09,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14080155] [2023-11-29 02:10:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:09,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:10:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14080155] [2023-11-29 02:10:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14080155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175319716] [2023-11-29 02:10:10,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:10:10,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:10,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:10,445 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:10,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 02:10:10,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:10:10,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:10:10,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:10:10,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:10,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:10,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175319716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:10,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-29 02:10:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368408825] [2023-11-29 02:10:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:10:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:10:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:10:11,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:11,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 766 transitions, 12282 flow. Second operand has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 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 02:10:11,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:11,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:11,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:18,970 INFO L124 PetriNetUnfolderBase]: 6786/22929 cut-off events. [2023-11-29 02:10:18,970 INFO L125 PetriNetUnfolderBase]: For 159709/162183 co-relation queries the response was YES. [2023-11-29 02:10:19,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95386 conditions, 22929 events. 6786/22929 cut-off events. For 159709/162183 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 254649 event pairs, 532 based on Foata normal form. 384/23101 useless extension candidates. Maximal degree in co-relation 95117. Up to 4212 conditions per place. [2023-11-29 02:10:19,643 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 353 selfloop transitions, 182 changer transitions 0/862 dead transitions. [2023-11-29 02:10:19,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 862 transitions, 14510 flow [2023-11-29 02:10:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:10:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 02:10:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1277 transitions. [2023-11-29 02:10:19,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8107936507936508 [2023-11-29 02:10:19,645 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1277 transitions. [2023-11-29 02:10:19,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1277 transitions. [2023-11-29 02:10:19,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:19,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1277 transitions. [2023-11-29 02:10:19,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.13333333333334) internal successors, (1277), 15 states have internal predecessors, (1277), 0 states have call successors, (0), 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 02:10:19,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 0 states have call successors, (0), 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 02:10:19,648 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 0 states have call successors, (0), 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 02:10:19,648 INFO L175 Difference]: Start difference. First operand has 536 places, 766 transitions, 12282 flow. Second operand 15 states and 1277 transitions. [2023-11-29 02:10:19,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 862 transitions, 14510 flow [2023-11-29 02:10:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 862 transitions, 14252 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-29 02:10:20,665 INFO L231 Difference]: Finished difference. Result has 553 places, 790 transitions, 13035 flow [2023-11-29 02:10:20,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=12050, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13035, PETRI_PLACES=553, PETRI_TRANSITIONS=790} [2023-11-29 02:10:20,666 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 451 predicate places. [2023-11-29 02:10:20,666 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 790 transitions, 13035 flow [2023-11-29 02:10:20,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 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 02:10:20,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:20,667 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:20,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 02:10:20,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 02:10:20,867 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:10:20,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -963485963, now seen corresponding path program 29 times [2023-11-29 02:10:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:20,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603621869] [2023-11-29 02:10:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:10:21,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603621869] [2023-11-29 02:10:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603621869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652204522] [2023-11-29 02:10:21,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:10:21,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:21,249 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:21,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 02:10:21,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:10:21,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:10:21,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:10:21,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:21,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652204522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:10:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897871395] [2023-11-29 02:10:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:21,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:10:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:10:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:10:21,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:22,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 790 transitions, 13035 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:22,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:22,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:22,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:29,956 INFO L124 PetriNetUnfolderBase]: 6184/21175 cut-off events. [2023-11-29 02:10:29,956 INFO L125 PetriNetUnfolderBase]: For 157422/159616 co-relation queries the response was YES. [2023-11-29 02:10:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88880 conditions, 21175 events. 6184/21175 cut-off events. For 157422/159616 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 233183 event pairs, 522 based on Foata normal form. 371/21360 useless extension candidates. Maximal degree in co-relation 88606. Up to 3829 conditions per place. [2023-11-29 02:10:30,372 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 299 selfloop transitions, 234 changer transitions 0/802 dead transitions. [2023-11-29 02:10:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 802 transitions, 13958 flow [2023-11-29 02:10:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:10:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:10:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1081 transitions. [2023-11-29 02:10:30,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7919413919413919 [2023-11-29 02:10:30,374 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1081 transitions. [2023-11-29 02:10:30,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1081 transitions. [2023-11-29 02:10:30,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:30,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1081 transitions. [2023-11-29 02:10:30,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.15384615384616) internal successors, (1081), 13 states have internal predecessors, (1081), 0 states have call successors, (0), 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 02:10:30,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:10:30,377 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:10:30,377 INFO L175 Difference]: Start difference. First operand has 553 places, 790 transitions, 13035 flow. Second operand 13 states and 1081 transitions. [2023-11-29 02:10:30,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 802 transitions, 13958 flow [2023-11-29 02:10:31,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 802 transitions, 13402 flow, removed 163 selfloop flow, removed 7 redundant places. [2023-11-29 02:10:31,368 INFO L231 Difference]: Finished difference. Result has 557 places, 724 transitions, 12018 flow [2023-11-29 02:10:31,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11270, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12018, PETRI_PLACES=557, PETRI_TRANSITIONS=724} [2023-11-29 02:10:31,369 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 455 predicate places. [2023-11-29 02:10:31,369 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 724 transitions, 12018 flow [2023-11-29 02:10:31,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:31,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:31,370 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:31,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 02:10:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 02:10:31,570 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:10:31,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash -583230745, now seen corresponding path program 30 times [2023-11-29 02:10:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790461522] [2023-11-29 02:10:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:31,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:10:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790461522] [2023-11-29 02:10:32,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790461522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639102112] [2023-11-29 02:10:32,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:10:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:32,214 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:32,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 02:10:32,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:10:32,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:10:32,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:10:32,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:32,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:32,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639102112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:32,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:32,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:10:32,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027434645] [2023-11-29 02:10:32,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:32,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:10:32,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:10:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:10:32,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:32,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 724 transitions, 12018 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:32,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:32,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:40,122 INFO L124 PetriNetUnfolderBase]: 6168/21128 cut-off events. [2023-11-29 02:10:40,122 INFO L125 PetriNetUnfolderBase]: For 153979/156081 co-relation queries the response was YES. [2023-11-29 02:10:40,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87757 conditions, 21128 events. 6168/21128 cut-off events. For 153979/156081 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 232552 event pairs, 536 based on Foata normal form. 285/21237 useless extension candidates. Maximal degree in co-relation 87480. Up to 3810 conditions per place. [2023-11-29 02:10:40,557 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 414 selfloop transitions, 99 changer transitions 0/782 dead transitions. [2023-11-29 02:10:40,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 782 transitions, 13752 flow [2023-11-29 02:10:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:10:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:10:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 842 transitions. [2023-11-29 02:10:40,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2023-11-29 02:10:40,559 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 842 transitions. [2023-11-29 02:10:40,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 842 transitions. [2023-11-29 02:10:40,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:40,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 842 transitions. [2023-11-29 02:10:40,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.2) internal successors, (842), 10 states have internal predecessors, (842), 0 states have call successors, (0), 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 02:10:40,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:40,561 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:40,561 INFO L175 Difference]: Start difference. First operand has 557 places, 724 transitions, 12018 flow. Second operand 10 states and 842 transitions. [2023-11-29 02:10:40,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 782 transitions, 13752 flow [2023-11-29 02:10:41,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 782 transitions, 13331 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-11-29 02:10:41,405 INFO L231 Difference]: Finished difference. Result has 562 places, 735 transitions, 12142 flow [2023-11-29 02:10:41,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11630, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12142, PETRI_PLACES=562, PETRI_TRANSITIONS=735} [2023-11-29 02:10:41,407 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 460 predicate places. [2023-11-29 02:10:41,407 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 735 transitions, 12142 flow [2023-11-29 02:10:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:41,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:41,407 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:41,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 02:10:41,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 02:10:41,608 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:10:41,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash -275406371, now seen corresponding path program 31 times [2023-11-29 02:10:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167642494] [2023-11-29 02:10:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:10:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167642494] [2023-11-29 02:10:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167642494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165086644] [2023-11-29 02:10:42,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:10:42,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:42,212 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:42,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 02:10:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:42,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:10:42,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:42,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:42,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165086644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:42,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:10:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251822878] [2023-11-29 02:10:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:10:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:10:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:10:42,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:42,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 735 transitions, 12142 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:42,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:42,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:42,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:50,872 INFO L124 PetriNetUnfolderBase]: 6469/22123 cut-off events. [2023-11-29 02:10:50,872 INFO L125 PetriNetUnfolderBase]: For 161817/163993 co-relation queries the response was YES. [2023-11-29 02:10:51,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92341 conditions, 22123 events. 6469/22123 cut-off events. For 161817/163993 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 245060 event pairs, 549 based on Foata normal form. 271/22209 useless extension candidates. Maximal degree in co-relation 92062. Up to 4005 conditions per place. [2023-11-29 02:10:51,315 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 442 selfloop transitions, 85 changer transitions 0/796 dead transitions. [2023-11-29 02:10:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 796 transitions, 14123 flow [2023-11-29 02:10:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:10:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:10:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 850 transitions. [2023-11-29 02:10:51,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2023-11-29 02:10:51,316 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 850 transitions. [2023-11-29 02:10:51,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 850 transitions. [2023-11-29 02:10:51,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:51,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 850 transitions. [2023-11-29 02:10:51,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 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 02:10:51,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:51,318 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:51,318 INFO L175 Difference]: Start difference. First operand has 562 places, 735 transitions, 12142 flow. Second operand 10 states and 850 transitions. [2023-11-29 02:10:51,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 796 transitions, 14123 flow [2023-11-29 02:10:52,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 796 transitions, 13723 flow, removed 137 selfloop flow, removed 4 redundant places. [2023-11-29 02:10:52,241 INFO L231 Difference]: Finished difference. Result has 571 places, 745 transitions, 12354 flow [2023-11-29 02:10:52,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=11914, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12354, PETRI_PLACES=571, PETRI_TRANSITIONS=745} [2023-11-29 02:10:52,242 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 469 predicate places. [2023-11-29 02:10:52,242 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 745 transitions, 12354 flow [2023-11-29 02:10:52,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:52,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:52,242 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:52,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 02:10:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 02:10:52,443 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:10:52,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1760396049, now seen corresponding path program 32 times [2023-11-29 02:10:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:52,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007372550] [2023-11-29 02:10:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:10:53,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007372550] [2023-11-29 02:10:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007372550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253234689] [2023-11-29 02:10:53,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:10:53,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:53,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:53,027 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:53,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 02:10:53,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:10:53,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:10:53,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:10:53,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:53,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:10:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:10:53,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:53,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253234689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:53,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:53,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:10:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822898292] [2023-11-29 02:10:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:10:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:53,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:10:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:10:53,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:10:53,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 745 transitions, 12354 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:10:53,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:53,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:10:53,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:02,354 INFO L124 PetriNetUnfolderBase]: 6727/22946 cut-off events. [2023-11-29 02:11:02,354 INFO L125 PetriNetUnfolderBase]: For 163156/165436 co-relation queries the response was YES. [2023-11-29 02:11:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95292 conditions, 22946 events. 6727/22946 cut-off events. For 163156/165436 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 256182 event pairs, 579 based on Foata normal form. 317/23069 useless extension candidates. Maximal degree in co-relation 95009. Up to 4176 conditions per place. [2023-11-29 02:11:03,053 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 426 selfloop transitions, 119 changer transitions 2/816 dead transitions. [2023-11-29 02:11:03,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 816 transitions, 14334 flow [2023-11-29 02:11:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:11:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:11:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1085 transitions. [2023-11-29 02:11:03,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2023-11-29 02:11:03,056 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1085 transitions. [2023-11-29 02:11:03,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1085 transitions. [2023-11-29 02:11:03,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1085 transitions. [2023-11-29 02:11:03,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.46153846153847) internal successors, (1085), 13 states have internal predecessors, (1085), 0 states have call successors, (0), 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 02:11:03,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:11:03,059 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:11:03,059 INFO L175 Difference]: Start difference. First operand has 571 places, 745 transitions, 12354 flow. Second operand 13 states and 1085 transitions. [2023-11-29 02:11:03,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 816 transitions, 14334 flow [2023-11-29 02:11:04,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 816 transitions, 14157 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:04,139 INFO L231 Difference]: Finished difference. Result has 583 places, 759 transitions, 12787 flow [2023-11-29 02:11:04,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=12192, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12787, PETRI_PLACES=583, PETRI_TRANSITIONS=759} [2023-11-29 02:11:04,141 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 481 predicate places. [2023-11-29 02:11:04,141 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 759 transitions, 12787 flow [2023-11-29 02:11:04,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:04,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:04,141 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:04,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 02:11:04,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:04,342 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:11:04,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2057904039, now seen corresponding path program 33 times [2023-11-29 02:11:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:04,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458624511] [2023-11-29 02:11:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:11:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458624511] [2023-11-29 02:11:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458624511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885617987] [2023-11-29 02:11:04,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:11:04,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:04,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:04,661 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:04,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 02:11:04,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 02:11:04,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:04,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:11:04,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:05,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:11:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:11:05,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:05,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885617987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:05,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:05,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:11:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864256405] [2023-11-29 02:11:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:11:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:11:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:11:05,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:11:05,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 759 transitions, 12787 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:05,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:05,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:11:05,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:13,512 INFO L124 PetriNetUnfolderBase]: 6729/22944 cut-off events. [2023-11-29 02:11:13,512 INFO L125 PetriNetUnfolderBase]: For 168609/170988 co-relation queries the response was YES. [2023-11-29 02:11:13,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95721 conditions, 22944 events. 6729/22944 cut-off events. For 168609/170988 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 256214 event pairs, 570 based on Foata normal form. 318/23059 useless extension candidates. Maximal degree in co-relation 95433. Up to 4178 conditions per place. [2023-11-29 02:11:14,054 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 441 selfloop transitions, 100 changer transitions 0/810 dead transitions. [2023-11-29 02:11:14,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 810 transitions, 14458 flow [2023-11-29 02:11:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:11:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 845 transitions. [2023-11-29 02:11:14,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8047619047619048 [2023-11-29 02:11:14,056 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 845 transitions. [2023-11-29 02:11:14,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 845 transitions. [2023-11-29 02:11:14,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:14,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 845 transitions. [2023-11-29 02:11:14,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 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 02:11:14,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:14,059 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:14,059 INFO L175 Difference]: Start difference. First operand has 583 places, 759 transitions, 12787 flow. Second operand 10 states and 845 transitions. [2023-11-29 02:11:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 810 transitions, 14458 flow [2023-11-29 02:11:15,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 810 transitions, 14224 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:15,070 INFO L231 Difference]: Finished difference. Result has 591 places, 764 transitions, 12930 flow [2023-11-29 02:11:15,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=12559, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12930, PETRI_PLACES=591, PETRI_TRANSITIONS=764} [2023-11-29 02:11:15,071 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 489 predicate places. [2023-11-29 02:11:15,071 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 764 transitions, 12930 flow [2023-11-29 02:11:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:15,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:15,072 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:15,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 02:11:15,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:15,272 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:11:15,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1793045179, now seen corresponding path program 34 times [2023-11-29 02:11:15,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:15,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834222096] [2023-11-29 02:11:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:15,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:11:15,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834222096] [2023-11-29 02:11:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834222096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016511622] [2023-11-29 02:11:15,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:11:15,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:15,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:15,747 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:15,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 02:11:15,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:11:15,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:15,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 02:11:15,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:16,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:11:16,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:11:16,057 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:11:16,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 02:11:16,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:11:16,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 02:11:16,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 02:11:16,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 02:11:16,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-29 02:11:16,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:11:16,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 02:11:16,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:16,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-29 02:11:16,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:11:16,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 02:11:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:11:16,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016511622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:16,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2023-11-29 02:11:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139748934] [2023-11-29 02:11:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:11:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:11:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:11:17,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2023-11-29 02:11:17,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 764 transitions, 12930 flow. Second operand has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:11:17,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:17,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2023-11-29 02:11:17,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:34,994 INFO L124 PetriNetUnfolderBase]: 11705/32828 cut-off events. [2023-11-29 02:11:34,995 INFO L125 PetriNetUnfolderBase]: For 329230/330500 co-relation queries the response was YES. [2023-11-29 02:11:35,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161240 conditions, 32828 events. 11705/32828 cut-off events. For 329230/330500 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 350341 event pairs, 2899 based on Foata normal form. 191/32786 useless extension candidates. Maximal degree in co-relation 160843. Up to 12298 conditions per place. [2023-11-29 02:11:35,765 INFO L140 encePairwiseOnDemand]: 78/105 looper letters, 1292 selfloop transitions, 177 changer transitions 0/1567 dead transitions. [2023-11-29 02:11:35,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1567 transitions, 24007 flow [2023-11-29 02:11:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:11:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 02:11:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1590 transitions. [2023-11-29 02:11:35,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583850931677019 [2023-11-29 02:11:35,768 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1590 transitions. [2023-11-29 02:11:35,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1590 transitions. [2023-11-29 02:11:35,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:35,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1590 transitions. [2023-11-29 02:11:35,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 69.1304347826087) internal successors, (1590), 23 states have internal predecessors, (1590), 0 states have call successors, (0), 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 02:11:35,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 105.0) internal successors, (2520), 24 states have internal predecessors, (2520), 0 states have call successors, (0), 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 02:11:35,772 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 105.0) internal successors, (2520), 24 states have internal predecessors, (2520), 0 states have call successors, (0), 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 02:11:35,772 INFO L175 Difference]: Start difference. First operand has 591 places, 764 transitions, 12930 flow. Second operand 23 states and 1590 transitions. [2023-11-29 02:11:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1567 transitions, 24007 flow [2023-11-29 02:11:37,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1567 transitions, 23800 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:37,486 INFO L231 Difference]: Finished difference. Result has 625 places, 848 transitions, 14724 flow [2023-11-29 02:11:37,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=12741, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14724, PETRI_PLACES=625, PETRI_TRANSITIONS=848} [2023-11-29 02:11:37,487 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 523 predicate places. [2023-11-29 02:11:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 848 transitions, 14724 flow [2023-11-29 02:11:37,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 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 02:11:37,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:37,488 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:37,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-29 02:11:37,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:37,688 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:11:37,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:37,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2088353605, now seen corresponding path program 35 times [2023-11-29 02:11:37,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:37,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373492516] [2023-11-29 02:11:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:11:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:38,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373492516] [2023-11-29 02:11:38,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373492516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:38,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146358766] [2023-11-29 02:11:38,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:11:38,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:38,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:38,250 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:38,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 02:11:38,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 02:11:38,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:38,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:11:38,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:38,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:11:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:11:38,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146358766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:11:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138692768] [2023-11-29 02:11:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:11:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:11:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:11:39,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:11:39,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 848 transitions, 14724 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:39,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:39,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:11:39,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:48,259 INFO L124 PetriNetUnfolderBase]: 6692/22829 cut-off events. [2023-11-29 02:11:48,259 INFO L125 PetriNetUnfolderBase]: For 191290/193859 co-relation queries the response was YES. [2023-11-29 02:11:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100450 conditions, 22829 events. 6692/22829 cut-off events. For 191290/193859 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 255545 event pairs, 587 based on Foata normal form. 343/22969 useless extension candidates. Maximal degree in co-relation 100141. Up to 4170 conditions per place. [2023-11-29 02:11:48,795 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 441 selfloop transitions, 109 changer transitions 2/821 dead transitions. [2023-11-29 02:11:48,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 821 transitions, 14811 flow [2023-11-29 02:11:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:11:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:11:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1084 transitions. [2023-11-29 02:11:48,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7941391941391941 [2023-11-29 02:11:48,798 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1084 transitions. [2023-11-29 02:11:48,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1084 transitions. [2023-11-29 02:11:48,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:48,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1084 transitions. [2023-11-29 02:11:48,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.38461538461539) internal successors, (1084), 13 states have internal predecessors, (1084), 0 states have call successors, (0), 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 02:11:48,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:11:48,801 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:11:48,801 INFO L175 Difference]: Start difference. First operand has 625 places, 848 transitions, 14724 flow. Second operand 13 states and 1084 transitions. [2023-11-29 02:11:48,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 821 transitions, 14811 flow [2023-11-29 02:11:50,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 821 transitions, 14504 flow, removed 77 selfloop flow, removed 16 redundant places. [2023-11-29 02:11:50,122 INFO L231 Difference]: Finished difference. Result has 612 places, 778 transitions, 13305 flow [2023-11-29 02:11:50,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=12876, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13305, PETRI_PLACES=612, PETRI_TRANSITIONS=778} [2023-11-29 02:11:50,123 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 510 predicate places. [2023-11-29 02:11:50,123 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 778 transitions, 13305 flow [2023-11-29 02:11:50,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:50,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:50,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-29 02:11:50,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:50,324 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:11:50,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash 850821371, now seen corresponding path program 36 times [2023-11-29 02:11:50,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457504651] [2023-11-29 02:11:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:11:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457504651] [2023-11-29 02:11:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457504651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620320319] [2023-11-29 02:11:50,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 02:11:50,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:50,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:50,672 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:50,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 02:11:50,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 02:11:50,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:50,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:11:50,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:51,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:11:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:11:51,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:51,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620320319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:51,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:51,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:11:51,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951441263] [2023-11-29 02:11:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:51,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:11:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:11:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:11:51,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:11:51,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 778 transitions, 13305 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:11:51,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:51,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:11:51,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:59,967 INFO L124 PetriNetUnfolderBase]: 6645/22606 cut-off events. [2023-11-29 02:11:59,967 INFO L125 PetriNetUnfolderBase]: For 165998/168584 co-relation queries the response was YES. [2023-11-29 02:12:00,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94397 conditions, 22606 events. 6645/22606 cut-off events. For 165998/168584 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 253409 event pairs, 597 based on Foata normal form. 381/22772 useless extension candidates. Maximal degree in co-relation 94095. Up to 4146 conditions per place. [2023-11-29 02:12:00,499 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 454 selfloop transitions, 107 changer transitions 2/832 dead transitions. [2023-11-29 02:12:00,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 832 transitions, 14999 flow [2023-11-29 02:12:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:12:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:12:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1086 transitions. [2023-11-29 02:12:00,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7956043956043956 [2023-11-29 02:12:00,501 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1086 transitions. [2023-11-29 02:12:00,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1086 transitions. [2023-11-29 02:12:00,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:00,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1086 transitions. [2023-11-29 02:12:00,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.53846153846153) internal successors, (1086), 13 states have internal predecessors, (1086), 0 states have call successors, (0), 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 02:12:00,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:12:00,505 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:12:00,505 INFO L175 Difference]: Start difference. First operand has 612 places, 778 transitions, 13305 flow. Second operand 13 states and 1086 transitions. [2023-11-29 02:12:00,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 832 transitions, 14999 flow [2023-11-29 02:12:01,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 832 transitions, 14815 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-29 02:12:01,661 INFO L231 Difference]: Finished difference. Result has 623 places, 792 transitions, 13640 flow [2023-11-29 02:12:01,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=13072, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13640, PETRI_PLACES=623, PETRI_TRANSITIONS=792} [2023-11-29 02:12:01,662 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 521 predicate places. [2023-11-29 02:12:01,662 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 792 transitions, 13640 flow [2023-11-29 02:12:01,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:12:01,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:01,662 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:01,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 02:12:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:01,862 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:12:01,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -327780837, now seen corresponding path program 37 times [2023-11-29 02:12:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:01,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128863297] [2023-11-29 02:12:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:12:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128863297] [2023-11-29 02:12:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128863297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445326072] [2023-11-29 02:12:02,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 02:12:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:02,179 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:02,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 02:12:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:02,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:12:02,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:02,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:12:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:12:02,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445326072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 02:12:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455013044] [2023-11-29 02:12:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:12:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:12:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:12:03,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:12:03,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 792 transitions, 13640 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:12:03,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:03,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:12:03,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:12,397 INFO L124 PetriNetUnfolderBase]: 6939/23531 cut-off events. [2023-11-29 02:12:12,397 INFO L125 PetriNetUnfolderBase]: For 172097/174753 co-relation queries the response was YES. [2023-11-29 02:12:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98303 conditions, 23531 events. 6939/23531 cut-off events. For 172097/174753 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 265895 event pairs, 590 based on Foata normal form. 351/23667 useless extension candidates. Maximal degree in co-relation 97997. Up to 4332 conditions per place. [2023-11-29 02:12:12,950 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 511 selfloop transitions, 85 changer transitions 0/865 dead transitions. [2023-11-29 02:12:12,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 865 transitions, 15768 flow [2023-11-29 02:12:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:12:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:12:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1094 transitions. [2023-11-29 02:12:12,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014652014652015 [2023-11-29 02:12:12,952 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1094 transitions. [2023-11-29 02:12:12,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1094 transitions. [2023-11-29 02:12:12,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:12,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1094 transitions. [2023-11-29 02:12:12,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.15384615384616) internal successors, (1094), 13 states have internal predecessors, (1094), 0 states have call successors, (0), 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 02:12:12,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:12:12,955 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 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 02:12:12,955 INFO L175 Difference]: Start difference. First operand has 623 places, 792 transitions, 13640 flow. Second operand 13 states and 1094 transitions. [2023-11-29 02:12:12,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 865 transitions, 15768 flow [2023-11-29 02:12:14,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 865 transitions, 15590 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-11-29 02:12:14,032 INFO L231 Difference]: Finished difference. Result has 637 places, 812 transitions, 14061 flow [2023-11-29 02:12:14,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=13462, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14061, PETRI_PLACES=637, PETRI_TRANSITIONS=812} [2023-11-29 02:12:14,034 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 535 predicate places. [2023-11-29 02:12:14,034 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 812 transitions, 14061 flow [2023-11-29 02:12:14,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:12:14,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:14,034 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:14,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 02:12:14,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:14,235 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 02:12:14,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -82735121, now seen corresponding path program 38 times [2023-11-29 02:12:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:14,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420575909] [2023-11-29 02:12:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 02:12:14,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420575909] [2023-11-29 02:12:14,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420575909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162036842] [2023-11-29 02:12:14,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:14,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:14,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:14,858 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:14,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82062422-66e8-4712-81dd-a45f2664e453/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 02:12:15,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:12:15,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:15,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:12:15,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 02:12:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 02:12:15,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162036842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 02:12:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691919051] [2023-11-29 02:12:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:15,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:12:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:12:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:12:15,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2023-11-29 02:12:15,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 812 transitions, 14061 flow. Second operand has 10 states, 10 states have (on average 76.6) internal successors, (766), 10 states have internal predecessors, (766), 0 states have call successors, (0), 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 02:12:15,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:15,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2023-11-29 02:12:15,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand