./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd --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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:32:11,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:32:11,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 13:32:11,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:32:11,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:32:11,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:32:11,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:32:11,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:32:11,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:32:11,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:32:11,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:32:11,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:32:11,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:32:11,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:32:11,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:32:11,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:32:11,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:32:11,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:32:11,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:32:11,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:32:11,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:32:11,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:32:11,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:32:11,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:32:11,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:32:11,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:32:11,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:32:11,451 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd 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 -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2024-11-13 13:32:11,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:32:11,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:32:11,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:32:11,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:32:11,756 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:32:11,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i Unable to find full path for "g++" [2024-11-13 13:32:13,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:32:14,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:32:14,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2024-11-13 13:32:14,173 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/data/1e63697c5/538de1ecaad245468beb4f0a149c3a2c/FLAG0f33f54c8 [2024-11-13 13:32:14,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/data/1e63697c5/538de1ecaad245468beb4f0a149c3a2c [2024-11-13 13:32:14,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:32:14,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:32:14,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:32:14,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:32:14,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:32:14,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e16df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14, skipping insertion in model container [2024-11-13 13:32:14,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:32:14,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:14,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:32:14,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:32:14,773 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:32:14,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14 WrapperNode [2024-11-13 13:32:14,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:32:14,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:14,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:32:14,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:32:14,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,831 INFO L138 Inliner]: procedures = 170, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 120 [2024-11-13 13:32:14,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:32:14,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:32:14,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:32:14,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:32:14,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:32:14,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:32:14,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:32:14,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:32:14,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (1/1) ... [2024-11-13 13:32:14,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:32:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:14,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:32:14,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb746dbc-8ab6-4401-a944-21a13586e0d0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 13:32:14,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:32:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 13:32:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:32:14,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:32:14,953 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:32:15,088 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:32:15,090 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:32:15,389 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:32:15,389 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:32:15,621 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:32:15,621 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:32:15,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:15 BoogieIcfgContainer [2024-11-13 13:32:15,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:32:15,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:32:15,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:32:15,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:32:15,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:32:14" (1/3) ... [2024-11-13 13:32:15,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f3742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:15, skipping insertion in model container [2024-11-13 13:32:15,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:14" (2/3) ... [2024-11-13 13:32:15,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f3742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:15, skipping insertion in model container [2024-11-13 13:32:15,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:15" (3/3) ... [2024-11-13 13:32:15,635 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2024-11-13 13:32:15,660 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:32:15,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 38_rand_cas_vs_concur.i that has 2 procedures, 90 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2024-11-13 13:32:15,662 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:32:15,791 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:32:15,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 200 flow [2024-11-13 13:32:15,894 INFO L124 PetriNetUnfolderBase]: 9/107 cut-off events. [2024-11-13 13:32:15,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:32:15,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 107 events. 9/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2024-11-13 13:32:15,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 200 flow [2024-11-13 13:32:15,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 200 flow [2024-11-13 13:32:15,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:15,939 INFO L333 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, 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;@16c1976f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:15,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 13:32:15,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:32:15,965 INFO L124 PetriNetUnfolderBase]: 3/41 cut-off events. [2024-11-13 13:32:15,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:32:15,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:15,966 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:15,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-13 13:32:15,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1733989492, now seen corresponding path program 1 times [2024-11-13 13:32:15,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837884957] [2024-11-13 13:32:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:16,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:32:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:16,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:32:16,131 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:32:16,133 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-13 13:32:16,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-13 13:32:16,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-13 13:32:16,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-13 13:32:16,139 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-13 13:32:16,139 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-13 13:32:16,139 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-13 13:32:16,139 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-13 13:32:16,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:32:16,143 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-13 13:32:16,147 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:32:16,147 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:32:16,245 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:32:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 172 transitions, 354 flow [2024-11-13 13:32:16,371 INFO L124 PetriNetUnfolderBase]: 17/192 cut-off events. [2024-11-13 13:32:16,372 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:32:16,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 192 events. 17/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 454 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2024-11-13 13:32:16,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 172 transitions, 354 flow [2024-11-13 13:32:16,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 172 transitions, 354 flow [2024-11-13 13:32:16,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:16,390 INFO L333 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, 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;@16c1976f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:16,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 13:32:16,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:32:16,467 INFO L124 PetriNetUnfolderBase]: 4/71 cut-off events. [2024-11-13 13:32:16,467 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:32:16,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:16,468 INFO L204 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] [2024-11-13 13:32:16,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-13 13:32:16,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1833097410, now seen corresponding path program 1 times [2024-11-13 13:32:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469530091] [2024-11-13 13:32:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469530091] [2024-11-13 13:32:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469530091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:17,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:17,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:17,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991845231] [2024-11-13 13:32:17,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:17,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:17,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 172 [2024-11-13 13:32:17,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 172 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:17,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:32:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 172 [2024-11-13 13:32:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:32:18,529 INFO L124 PetriNetUnfolderBase]: 96/895 cut-off events. [2024-11-13 13:32:18,532 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-13 13:32:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 895 events. 96/895 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5194 event pairs, 4 based on Foata normal form. 190/1018 useless extension candidates. Maximal degree in co-relation 898. Up to 60 conditions per place. [2024-11-13 13:32:18,545 INFO L140 encePairwiseOnDemand]: 138/172 looper letters, 51 selfloop transitions, 24 changer transitions 0/203 dead transitions. [2024-11-13 13:32:18,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 203 transitions, 586 flow [2024-11-13 13:32:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:32:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 975 transitions. [2024-11-13 13:32:18,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9447674418604651 [2024-11-13 13:32:18,566 INFO L175 Difference]: Start difference. First operand has 162 places, 172 transitions, 354 flow. Second operand 6 states and 975 transitions. [2024-11-13 13:32:18,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 203 transitions, 586 flow [2024-11-13 13:32:18,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 203 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:32:18,579 INFO L231 Difference]: Finished difference. Result has 156 places, 169 transitions, 472 flow [2024-11-13 13:32:18,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=156, PETRI_TRANSITIONS=169} [2024-11-13 13:32:18,586 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -6 predicate places. [2024-11-13 13:32:18,586 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 169 transitions, 472 flow [2024-11-13 13:32:18,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:18,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:18,588 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:18,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:32:18,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-13 13:32:18,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -497767758, now seen corresponding path program 1 times [2024-11-13 13:32:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:18,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876399120] [2024-11-13 13:32:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:18,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:32:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:18,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:32:18,637 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:32:18,637 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-13 13:32:18,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2024-11-13 13:32:18,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2024-11-13 13:32:18,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2024-11-13 13:32:18,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2024-11-13 13:32:18,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2024-11-13 13:32:18,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2024-11-13 13:32:18,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2024-11-13 13:32:18,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2024-11-13 13:32:18,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:32:18,639 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:32:18,640 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:32:18,640 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:32:18,767 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:32:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 246 transitions, 510 flow [2024-11-13 13:32:18,846 INFO L124 PetriNetUnfolderBase]: 25/277 cut-off events. [2024-11-13 13:32:18,847 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:32:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 25/277 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 887 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2024-11-13 13:32:18,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 246 transitions, 510 flow [2024-11-13 13:32:18,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 246 transitions, 510 flow [2024-11-13 13:32:18,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:18,857 INFO L333 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, 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;@16c1976f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:18,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-13 13:32:18,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:32:18,869 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-11-13 13:32:18,870 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:32:18,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:18,870 INFO L204 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] [2024-11-13 13:32:18,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-13 13:32:18,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1035960451, now seen corresponding path program 1 times [2024-11-13 13:32:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303940748] [2024-11-13 13:32:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:19,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303940748] [2024-11-13 13:32:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303940748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262728639] [2024-11-13 13:32:19,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:19,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:19,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 246 [2024-11-13 13:32:19,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 246 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:19,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:32:19,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 246 [2024-11-13 13:32:19,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:32:22,145 INFO L124 PetriNetUnfolderBase]: 2059/10165 cut-off events. [2024-11-13 13:32:22,145 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2024-11-13 13:32:22,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13508 conditions, 10165 events. 2059/10165 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 113000 event pairs, 154 based on Foata normal form. 2615/11927 useless extension candidates. Maximal degree in co-relation 10493. Up to 1016 conditions per place. [2024-11-13 13:32:22,250 INFO L140 encePairwiseOnDemand]: 196/246 looper letters, 78 selfloop transitions, 36 changer transitions 0/297 dead transitions. [2024-11-13 13:32:22,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 297 transitions, 888 flow [2024-11-13 13:32:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:32:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2024-11-13 13:32:22,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.94579945799458 [2024-11-13 13:32:22,257 INFO L175 Difference]: Start difference. First operand has 231 places, 246 transitions, 510 flow. Second operand 6 states and 1396 transitions. [2024-11-13 13:32:22,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 297 transitions, 888 flow [2024-11-13 13:32:22,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 297 transitions, 878 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-13 13:32:22,267 INFO L231 Difference]: Finished difference. Result has 219 places, 244 transitions, 690 flow [2024-11-13 13:32:22,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=690, PETRI_PLACES=219, PETRI_TRANSITIONS=244} [2024-11-13 13:32:22,269 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -12 predicate places. [2024-11-13 13:32:22,270 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 244 transitions, 690 flow [2024-11-13 13:32:22,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:22,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:22,272 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:22,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:32:22,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-13 13:32:22,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash -428912269, now seen corresponding path program 1 times [2024-11-13 13:32:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42958301] [2024-11-13 13:32:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:22,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:32:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:22,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:32:22,320 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:32:22,320 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-13 13:32:22,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-11-13 13:32:22,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-11-13 13:32:22,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-11-13 13:32:22,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-11-13 13:32:22,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-11-13 13:32:22,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-11-13 13:32:22,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-11-13 13:32:22,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-11-13 13:32:22,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-11-13 13:32:22,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-11-13 13:32:22,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-11-13 13:32:22,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-11-13 13:32:22,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:32:22,325 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:32:22,326 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:32:22,326 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:32:22,440 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:32:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 320 transitions, 668 flow [2024-11-13 13:32:22,582 INFO L124 PetriNetUnfolderBase]: 33/362 cut-off events. [2024-11-13 13:32:22,582 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:32:22,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 362 events. 33/362 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1354 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 303. Up to 10 conditions per place. [2024-11-13 13:32:22,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 320 transitions, 668 flow [2024-11-13 13:32:22,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 320 transitions, 668 flow [2024-11-13 13:32:22,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:22,594 INFO L333 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, 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;@16c1976f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:22,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-13 13:32:22,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:32:22,606 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-11-13 13:32:22,606 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:32:22,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:22,606 INFO L204 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] [2024-11-13 13:32:22,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-13 13:32:22,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1671869146, now seen corresponding path program 1 times [2024-11-13 13:32:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954380042] [2024-11-13 13:32:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954380042] [2024-11-13 13:32:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954380042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:22,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007060768] [2024-11-13 13:32:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:22,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:23,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 320 [2024-11-13 13:32:23,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 320 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:23,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:32:23,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 320 [2024-11-13 13:32:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:32:40,297 INFO L124 PetriNetUnfolderBase]: 30584/105715 cut-off events. [2024-11-13 13:32:40,297 INFO L125 PetriNetUnfolderBase]: For 10334/10334 co-relation queries the response was YES. [2024-11-13 13:32:40,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150622 conditions, 105715 events. 30584/105715 cut-off events. For 10334/10334 co-relation queries the response was YES. Maximal size of possible extension queue 3037. Compared 1565886 event pairs, 2775 based on Foata normal form. 30600/126855 useless extension candidates. Maximal degree in co-relation 112740. Up to 13444 conditions per place. [2024-11-13 13:32:41,383 INFO L140 encePairwiseOnDemand]: 254/320 looper letters, 105 selfloop transitions, 48 changer transitions 0/391 dead transitions. [2024-11-13 13:32:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 391 transitions, 1200 flow [2024-11-13 13:32:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:32:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1817 transitions. [2024-11-13 13:32:41,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9463541666666667 [2024-11-13 13:32:41,390 INFO L175 Difference]: Start difference. First operand has 300 places, 320 transitions, 668 flow. Second operand 6 states and 1817 transitions. [2024-11-13 13:32:41,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 391 transitions, 1200 flow [2024-11-13 13:32:41,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 391 transitions, 1170 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-13 13:32:41,409 INFO L231 Difference]: Finished difference. Result has 282 places, 319 transitions, 908 flow [2024-11-13 13:32:41,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=908, PETRI_PLACES=282, PETRI_TRANSITIONS=319} [2024-11-13 13:32:41,412 INFO L277 CegarLoopForPetriNet]: 300 programPoint places, -18 predicate places. [2024-11-13 13:32:41,412 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 319 transitions, 908 flow [2024-11-13 13:32:41,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:41,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:41,415 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:41,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:32:41,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-13 13:32:41,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1407636679, now seen corresponding path program 1 times [2024-11-13 13:32:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:41,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396054328] [2024-11-13 13:32:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:41,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:32:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:41,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:32:41,460 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-11-13 13:32:41,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-11-13 13:32:41,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-11-13 13:32:41,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-11-13 13:32:41,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-11-13 13:32:41,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:32:41,465 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:32:41,465 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:32:41,465 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-13 13:32:41,602 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:32:41,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 394 transitions, 828 flow [2024-11-13 13:32:41,719 INFO L124 PetriNetUnfolderBase]: 41/447 cut-off events. [2024-11-13 13:32:41,720 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 13:32:41,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 447 events. 41/447 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1828 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2024-11-13 13:32:41,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 394 transitions, 828 flow [2024-11-13 13:32:41,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 394 transitions, 828 flow [2024-11-13 13:32:41,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:32:41,731 INFO L333 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, 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;@16c1976f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:32:41,731 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-13 13:32:41,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:32:41,738 INFO L124 PetriNetUnfolderBase]: 4/71 cut-off events. [2024-11-13 13:32:41,738 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:32:41,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:32:41,739 INFO L204 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] [2024-11-13 13:32:41,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-11-13 13:32:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2004420761, now seen corresponding path program 1 times [2024-11-13 13:32:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030467174] [2024-11-13 13:32:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030467174] [2024-11-13 13:32:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030467174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:42,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:42,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:32:42,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931495671] [2024-11-13 13:32:42,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:42,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:42,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:42,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:42,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 394 [2024-11-13 13:32:42,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 394 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 302.1666666666667) internal successors, (1813), 6 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:42,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:32:42,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 394 [2024-11-13 13:32:42,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand