./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme --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 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:05,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:05,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:01:05,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:05,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:05,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:05,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:05,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:05,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:05,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:05,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:05,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:05,675 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:05,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:05,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:05,677 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:05,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:05,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:05,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:05,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:05,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:05,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:05,681 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:01:05,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:05,682 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:05,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:05,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:05,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:05,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:05,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:05,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:05,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:05,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:05,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:05,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:05,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:05,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:05,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:05,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:05,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:05,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:05,699 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_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f [2023-11-26 12:01:06,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:06,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:06,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:06,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:06,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:06,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2023-11-26 12:01:09,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:09,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:09,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2023-11-26 12:01:09,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/data/20265dee7/47decf01045b4308ab8362e9cdef19ef/FLAGcbe2712b3 [2023-11-26 12:01:09,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/data/20265dee7/47decf01045b4308ab8362e9cdef19ef [2023-11-26 12:01:09,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:09,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:09,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:09,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:09,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:09,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:09" (1/1) ... [2023-11-26 12:01:09,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e88d833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:09, skipping insertion in model container [2023-11-26 12:01:09,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:09" (1/1) ... [2023-11-26 12:01:09,670 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:10,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:10,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:10,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:10,192 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:10,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10 WrapperNode [2023-11-26 12:01:10,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:10,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:10,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:10,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:10,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,244 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 137 [2023-11-26 12:01:10,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:10,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:10,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:10,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:10,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:10,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:10,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:10,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:10,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:10,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:10,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c842a499-1213-445e-87f0-58b501533198/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-26 12:01:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-26 12:01:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 12:01:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 12:01:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:01:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:01:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:01:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:01:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:10,369 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:01:10,535 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:10,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:10,875 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:10,996 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:10,996 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:01:10,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:10 BoogieIcfgContainer [2023-11-26 12:01:10,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:11,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:11,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:11,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:11,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:09" (1/3) ... [2023-11-26 12:01:11,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f928c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:11, skipping insertion in model container [2023-11-26 12:01:11,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (2/3) ... [2023-11-26 12:01:11,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f928c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:11, skipping insertion in model container [2023-11-26 12:01:11,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:10" (3/3) ... [2023-11-26 12:01:11,009 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2023-11-26 12:01:11,016 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:01:11,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:11,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-26 12:01:11,026 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:01:11,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:11,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 111 transitions, 230 flow [2023-11-26 12:01:11,280 INFO L124 PetriNetUnfolderBase]: 8/121 cut-off events. [2023-11-26 12:01:11,282 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:11,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 121 events. 8/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 229 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2023-11-26 12:01:11,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 111 transitions, 230 flow [2023-11-26 12:01:11,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 110 transitions, 227 flow [2023-11-26 12:01:11,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:11,425 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;@2aed2f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:11,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-26 12:01:11,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:11,447 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-26 12:01:11,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:11,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:11,449 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] [2023-11-26 12:01:11,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 12:01:11,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1593625506, now seen corresponding path program 1 times [2023-11-26 12:01:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:11,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84806980] [2023-11-26 12:01:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84806980] [2023-11-26 12:01:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84806980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:11,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:11,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:01:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984824934] [2023-11-26 12:01:11,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:11,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:11,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2023-11-26 12:01:11,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 227 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:11,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2023-11-26 12:01:11,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:11,946 INFO L124 PetriNetUnfolderBase]: 11/125 cut-off events. [2023-11-26 12:01:11,946 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:01:11,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 125 events. 11/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 4 based on Foata normal form. 29/134 useless extension candidates. Maximal degree in co-relation 131. Up to 22 conditions per place. [2023-11-26 12:01:11,952 INFO L140 encePairwiseOnDemand]: 95/111 looper letters, 6 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2023-11-26 12:01:11,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 183 flow [2023-11-26 12:01:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:01:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-11-26 12:01:11,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2023-11-26 12:01:11,970 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-11-26 12:01:11,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-11-26 12:01:11,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:11,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-11-26 12:01:11,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,991 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,993 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 227 flow. Second operand 2 states and 198 transitions. [2023-11-26 12:01:11,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 183 flow [2023-11-26 12:01:11,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:12,004 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 170 flow [2023-11-26 12:01:12,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-11-26 12:01:12,012 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -23 predicate places. [2023-11-26 12:01:12,013 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 170 flow [2023-11-26 12:01:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,014 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] [2023-11-26 12:01:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:12,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 12:01:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1829196442, now seen corresponding path program 1 times [2023-11-26 12:01:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067827099] [2023-11-26 12:01:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067827099] [2023-11-26 12:01:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067827099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436656323] [2023-11-26 12:01:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:12,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 111 [2023-11-26 12:01:12,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:12,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 111 [2023-11-26 12:01:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:12,271 INFO L124 PetriNetUnfolderBase]: 52/354 cut-off events. [2023-11-26 12:01:12,272 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:01:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 354 events. 52/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 9 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 473. Up to 70 conditions per place. [2023-11-26 12:01:12,280 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 16 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-26 12:01:12,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 227 flow [2023-11-26 12:01:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-26 12:01:12,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7957957957957958 [2023-11-26 12:01:12,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:12,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,293 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 170 flow. Second operand 3 states and 265 transitions. [2023-11-26 12:01:12,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 227 flow [2023-11-26 12:01:12,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:12,298 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 198 flow [2023-11-26 12:01:12,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-11-26 12:01:12,299 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -20 predicate places. [2023-11-26 12:01:12,300 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 198 flow [2023-11-26 12:01:12,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,301 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] [2023-11-26 12:01:12,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:12,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 12:01:12,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1216140568, now seen corresponding path program 1 times [2023-11-26 12:01:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364909060] [2023-11-26 12:01:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364909060] [2023-11-26 12:01:12,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364909060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213115904] [2023-11-26 12:01:12,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:12,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 111 [2023-11-26 12:01:12,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 111 [2023-11-26 12:01:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:12,552 INFO L124 PetriNetUnfolderBase]: 88/599 cut-off events. [2023-11-26 12:01:12,552 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-26 12:01:12,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 599 events. 88/599 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3076 event pairs, 25 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 860. Up to 99 conditions per place. [2023-11-26 12:01:12,558 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 16 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-11-26 12:01:12,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 255 flow [2023-11-26 12:01:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-26 12:01:12,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7957957957957958 [2023-11-26 12:01:12,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:12,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-26 12:01:12,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,565 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 198 flow. Second operand 3 states and 265 transitions. [2023-11-26 12:01:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 255 flow [2023-11-26 12:01:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:12,570 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 218 flow [2023-11-26 12:01:12,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2023-11-26 12:01:12,572 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -19 predicate places. [2023-11-26 12:01:12,572 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 218 flow [2023-11-26 12:01:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:12,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 12:01:12,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -8761273, now seen corresponding path program 1 times [2023-11-26 12:01:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642319438] [2023-11-26 12:01:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:12,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:12,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:12,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:12,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2023-11-26 12:01:12,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2023-11-26 12:01:12,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2023-11-26 12:01:12,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2023-11-26 12:01:12,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2023-11-26 12:01:12,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2023-11-26 12:01:12,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2023-11-26 12:01:12,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2023-11-26 12:01:12,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2023-11-26 12:01:12,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2023-11-26 12:01:12,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2023-11-26 12:01:12,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2023-11-26 12:01:12,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2023-11-26 12:01:12,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2023-11-26 12:01:12,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2023-11-26 12:01:12,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2023-11-26 12:01:12,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2023-11-26 12:01:12,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2023-11-26 12:01:12,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2023-11-26 12:01:12,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 38 remaining) [2023-11-26 12:01:12,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2023-11-26 12:01:12,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2023-11-26 12:01:12,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2023-11-26 12:01:12,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2023-11-26 12:01:12,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2023-11-26 12:01:12,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2023-11-26 12:01:12,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2023-11-26 12:01:12,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2023-11-26 12:01:12,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2023-11-26 12:01:12,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2023-11-26 12:01:12,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2023-11-26 12:01:12,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2023-11-26 12:01:12,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2023-11-26 12:01:12,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2023-11-26 12:01:12,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2023-11-26 12:01:12,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2023-11-26 12:01:12,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2023-11-26 12:01:12,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2023-11-26 12:01:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:12,654 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 12:01:12,657 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:12,657 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:01:12,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:12,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 396 flow [2023-11-26 12:01:12,766 INFO L124 PetriNetUnfolderBase]: 11/183 cut-off events. [2023-11-26 12:01:12,767 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:01:12,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 183 events. 11/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 433 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 190. Up to 6 conditions per place. [2023-11-26 12:01:12,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 188 transitions, 396 flow [2023-11-26 12:01:12,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 159 transitions, 331 flow [2023-11-26 12:01:12,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:12,776 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;@2aed2f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:12,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-26 12:01:12,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:12,780 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-26 12:01:12,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:12,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,781 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] [2023-11-26 12:01:12,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-11-26 12:01:12,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1154291774, now seen corresponding path program 1 times [2023-11-26 12:01:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598814052] [2023-11-26 12:01:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598814052] [2023-11-26 12:01:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598814052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:01:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174535014] [2023-11-26 12:01:12,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:12,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 188 [2023-11-26 12:01:12,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 159 transitions, 331 flow. Second operand has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 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) [2023-11-26 12:01:12,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:12,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 188 [2023-11-26 12:01:12,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:12,936 INFO L124 PetriNetUnfolderBase]: 71/577 cut-off events. [2023-11-26 12:01:12,937 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-26 12:01:12,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 577 events. 71/577 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2812 event pairs, 37 based on Foata normal form. 120/589 useless extension candidates. Maximal degree in co-relation 693. Up to 108 conditions per place. [2023-11-26 12:01:12,945 INFO L140 encePairwiseOnDemand]: 166/188 looper letters, 9 selfloop transitions, 0 changer transitions 0/123 dead transitions. [2023-11-26 12:01:12,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 277 flow [2023-11-26 12:01:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:01:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 319 transitions. [2023-11-26 12:01:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.848404255319149 [2023-11-26 12:01:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 319 transitions. [2023-11-26 12:01:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 319 transitions. [2023-11-26 12:01:12,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:12,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 319 transitions. [2023-11-26 12:01:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,953 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,953 INFO L175 Difference]: Start difference. First operand has 158 places, 159 transitions, 331 flow. Second operand 2 states and 319 transitions. [2023-11-26 12:01:12,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 277 flow [2023-11-26 12:01:12,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:12,958 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 258 flow [2023-11-26 12:01:12,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2023-11-26 12:01:12,959 INFO L281 CegarLoopForPetriNet]: 158 programPoint places, -30 predicate places. [2023-11-26 12:01:12,960 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 258 flow [2023-11-26 12:01:12,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 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) [2023-11-26 12:01:12,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,961 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] [2023-11-26 12:01:12,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:12,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-11-26 12:01:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1172807930, now seen corresponding path program 1 times [2023-11-26 12:01:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072139586] [2023-11-26 12:01:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072139586] [2023-11-26 12:01:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072139586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510004595] [2023-11-26 12:01:12,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:13,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 188 [2023-11-26 12:01:13,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 188 [2023-11-26 12:01:13,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:13,669 INFO L124 PetriNetUnfolderBase]: 881/3496 cut-off events. [2023-11-26 12:01:13,725 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-26 12:01:13,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5014 conditions, 3496 events. 881/3496 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 30271 event pairs, 253 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 5009. Up to 813 conditions per place. [2023-11-26 12:01:13,788 INFO L140 encePairwiseOnDemand]: 177/188 looper letters, 28 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2023-11-26 12:01:13,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 139 transitions, 370 flow [2023-11-26 12:01:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-26 12:01:13,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606382978723404 [2023-11-26 12:01:13,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-26 12:01:13,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-26 12:01:13,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:13,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-26 12:01:13,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,798 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 258 flow. Second operand 3 states and 429 transitions. [2023-11-26 12:01:13,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 139 transitions, 370 flow [2023-11-26 12:01:13,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 139 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:13,804 INFO L231 Difference]: Finished difference. Result has 132 places, 131 transitions, 328 flow [2023-11-26 12:01:13,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=132, PETRI_TRANSITIONS=131} [2023-11-26 12:01:13,807 INFO L281 CegarLoopForPetriNet]: 158 programPoint places, -26 predicate places. [2023-11-26 12:01:13,808 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 131 transitions, 328 flow [2023-11-26 12:01:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:13,809 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] [2023-11-26 12:01:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:13,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-11-26 12:01:13,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1786965496, now seen corresponding path program 1 times [2023-11-26 12:01:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537392539] [2023-11-26 12:01:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537392539] [2023-11-26 12:01:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537392539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330416374] [2023-11-26 12:01:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:13,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 188 [2023-11-26 12:01:13,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 131 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:13,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 188 [2023-11-26 12:01:13,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:15,863 INFO L124 PetriNetUnfolderBase]: 2784/10782 cut-off events. [2023-11-26 12:01:15,864 INFO L125 PetriNetUnfolderBase]: For 755/762 co-relation queries the response was YES. [2023-11-26 12:01:15,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16750 conditions, 10782 events. 2784/10782 cut-off events. For 755/762 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 119500 event pairs, 776 based on Foata normal form. 0/8969 useless extension candidates. Maximal degree in co-relation 16743. Up to 2114 conditions per place. [2023-11-26 12:01:16,015 INFO L140 encePairwiseOnDemand]: 177/188 looper letters, 28 selfloop transitions, 8 changer transitions 0/147 dead transitions. [2023-11-26 12:01:16,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 147 transitions, 440 flow [2023-11-26 12:01:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-26 12:01:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606382978723404 [2023-11-26 12:01:16,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-26 12:01:16,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-26 12:01:16,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:16,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-26 12:01:16,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,025 INFO L175 Difference]: Start difference. First operand has 132 places, 131 transitions, 328 flow. Second operand 3 states and 429 transitions. [2023-11-26 12:01:16,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 147 transitions, 440 flow [2023-11-26 12:01:16,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 147 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:16,040 INFO L231 Difference]: Finished difference. Result has 134 places, 139 transitions, 382 flow [2023-11-26 12:01:16,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=134, PETRI_TRANSITIONS=139} [2023-11-26 12:01:16,042 INFO L281 CegarLoopForPetriNet]: 158 programPoint places, -24 predicate places. [2023-11-26 12:01:16,042 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 139 transitions, 382 flow [2023-11-26 12:01:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:16,043 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] [2023-11-26 12:01:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:01:16,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-11-26 12:01:16,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1867736343, now seen corresponding path program 1 times [2023-11-26 12:01:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167366388] [2023-11-26 12:01:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:16,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167366388] [2023-11-26 12:01:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167366388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:16,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528519035] [2023-11-26 12:01:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:16,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:16,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 188 [2023-11-26 12:01:16,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 139 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:16,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 188 [2023-11-26 12:01:16,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:18,007 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([658] L706-1-->L707: Formula: (= |v_#race~a~0_1| 0) InVars {} OutVars{#race~a~0=|v_#race~a~0_1|} AuxVars[] AssignedVars[#race~a~0][42], [74#L708-5true, thr2Thread1of2ForFork0InUse, Black: 191#true, thr2Thread2of2ForFork0InUse, 199#(= |#race~b~0| 0), thr1Thread1of2ForFork1InUse, Black: 197#true, 100#L707true, 134#L730-4true, 117#L721true, 188#true, 203#true]) [2023-11-26 12:01:18,007 INFO L294 olderBase$Statistics]: this new event has 91 ancestors and is cut-off event [2023-11-26 12:01:18,007 INFO L297 olderBase$Statistics]: existing Event has 60 ancestors and is cut-off event [2023-11-26 12:01:18,008 INFO L297 olderBase$Statistics]: existing Event has 91 ancestors and is cut-off event [2023-11-26 12:01:18,008 INFO L297 olderBase$Statistics]: existing Event has 91 ancestors and is cut-off event [2023-11-26 12:01:18,611 INFO L124 PetriNetUnfolderBase]: 3551/14048 cut-off events. [2023-11-26 12:01:18,611 INFO L125 PetriNetUnfolderBase]: For 898/901 co-relation queries the response was YES. [2023-11-26 12:01:18,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22414 conditions, 14048 events. 3551/14048 cut-off events. For 898/901 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 165962 event pairs, 1494 based on Foata normal form. 0/11785 useless extension candidates. Maximal degree in co-relation 22406. Up to 3361 conditions per place. [2023-11-26 12:01:18,803 INFO L140 encePairwiseOnDemand]: 182/188 looper letters, 21 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2023-11-26 12:01:18,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 457 flow [2023-11-26 12:01:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-26 12:01:18,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7712765957446809 [2023-11-26 12:01:18,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-26 12:01:18,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-26 12:01:18,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:18,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-26 12:01:18,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,815 INFO L175 Difference]: Start difference. First operand has 134 places, 139 transitions, 382 flow. Second operand 3 states and 435 transitions. [2023-11-26 12:01:18,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 457 flow [2023-11-26 12:01:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 148 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:18,829 INFO L231 Difference]: Finished difference. Result has 136 places, 143 transitions, 404 flow [2023-11-26 12:01:18,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=136, PETRI_TRANSITIONS=143} [2023-11-26 12:01:18,832 INFO L281 CegarLoopForPetriNet]: 158 programPoint places, -22 predicate places. [2023-11-26 12:01:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 143 transitions, 404 flow [2023-11-26 12:01:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:18,834 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:01:18,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-11-26 12:01:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1042402053, now seen corresponding path program 1 times [2023-11-26 12:01:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068884309] [2023-11-26 12:01:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:18,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:18,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 56 remaining) [2023-11-26 12:01:18,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (54 of 56 remaining) [2023-11-26 12:01:18,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (53 of 56 remaining) [2023-11-26 12:01:18,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (52 of 56 remaining) [2023-11-26 12:01:18,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (51 of 56 remaining) [2023-11-26 12:01:18,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (50 of 56 remaining) [2023-11-26 12:01:18,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (49 of 56 remaining) [2023-11-26 12:01:18,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (48 of 56 remaining) [2023-11-26 12:01:18,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (47 of 56 remaining) [2023-11-26 12:01:18,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (46 of 56 remaining) [2023-11-26 12:01:18,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (45 of 56 remaining) [2023-11-26 12:01:18,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (44 of 56 remaining) [2023-11-26 12:01:18,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (43 of 56 remaining) [2023-11-26 12:01:18,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (42 of 56 remaining) [2023-11-26 12:01:18,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (41 of 56 remaining) [2023-11-26 12:01:18,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (40 of 56 remaining) [2023-11-26 12:01:18,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (39 of 56 remaining) [2023-11-26 12:01:18,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (38 of 56 remaining) [2023-11-26 12:01:18,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (37 of 56 remaining) [2023-11-26 12:01:18,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 56 remaining) [2023-11-26 12:01:18,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (35 of 56 remaining) [2023-11-26 12:01:18,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (34 of 56 remaining) [2023-11-26 12:01:18,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (33 of 56 remaining) [2023-11-26 12:01:18,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (32 of 56 remaining) [2023-11-26 12:01:18,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (31 of 56 remaining) [2023-11-26 12:01:18,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (30 of 56 remaining) [2023-11-26 12:01:18,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (29 of 56 remaining) [2023-11-26 12:01:18,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (28 of 56 remaining) [2023-11-26 12:01:18,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (27 of 56 remaining) [2023-11-26 12:01:18,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (26 of 56 remaining) [2023-11-26 12:01:18,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (25 of 56 remaining) [2023-11-26 12:01:18,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (24 of 56 remaining) [2023-11-26 12:01:18,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (23 of 56 remaining) [2023-11-26 12:01:18,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (22 of 56 remaining) [2023-11-26 12:01:18,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 56 remaining) [2023-11-26 12:01:18,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 56 remaining) [2023-11-26 12:01:18,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 56 remaining) [2023-11-26 12:01:18,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (18 of 56 remaining) [2023-11-26 12:01:18,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (17 of 56 remaining) [2023-11-26 12:01:18,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (16 of 56 remaining) [2023-11-26 12:01:18,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (15 of 56 remaining) [2023-11-26 12:01:18,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (14 of 56 remaining) [2023-11-26 12:01:18,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (13 of 56 remaining) [2023-11-26 12:01:18,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (12 of 56 remaining) [2023-11-26 12:01:18,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 56 remaining) [2023-11-26 12:01:18,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 56 remaining) [2023-11-26 12:01:18,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 56 remaining) [2023-11-26 12:01:18,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 56 remaining) [2023-11-26 12:01:18,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 56 remaining) [2023-11-26 12:01:18,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 56 remaining) [2023-11-26 12:01:18,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 56 remaining) [2023-11-26 12:01:18,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 56 remaining) [2023-11-26 12:01:18,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 56 remaining) [2023-11-26 12:01:18,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 56 remaining) [2023-11-26 12:01:18,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 56 remaining) [2023-11-26 12:01:18,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 56 remaining) [2023-11-26 12:01:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:01:18,945 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 12:01:18,948 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:18,949 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:01:19,034 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 265 transitions, 566 flow [2023-11-26 12:01:19,107 INFO L124 PetriNetUnfolderBase]: 14/245 cut-off events. [2023-11-26 12:01:19,107 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 12:01:19,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 245 events. 14/245 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 710 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 256. Up to 8 conditions per place. [2023-11-26 12:01:19,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 265 transitions, 566 flow [2023-11-26 12:01:19,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 208 transitions, 437 flow [2023-11-26 12:01:19,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:19,118 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;@2aed2f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:19,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2023-11-26 12:01:19,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:19,123 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-26 12:01:19,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:19,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:19,123 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] [2023-11-26 12:01:19,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-11-26 12:01:19,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash 888396970, now seen corresponding path program 1 times [2023-11-26 12:01:19,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227648413] [2023-11-26 12:01:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227648413] [2023-11-26 12:01:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227648413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:19,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:01:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640209696] [2023-11-26 12:01:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:19,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 265 [2023-11-26 12:01:19,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 208 transitions, 437 flow. Second operand has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:19,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 265 [2023-11-26 12:01:19,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:19,731 INFO L124 PetriNetUnfolderBase]: 337/2218 cut-off events. [2023-11-26 12:01:19,731 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-26 12:01:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 2218 events. 337/2218 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 17242 event pairs, 195 based on Foata normal form. 456/2260 useless extension candidates. Maximal degree in co-relation 2784. Up to 454 conditions per place. [2023-11-26 12:01:19,771 INFO L140 encePairwiseOnDemand]: 237/265 looper letters, 12 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2023-11-26 12:01:19,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 164 transitions, 373 flow [2023-11-26 12:01:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:01:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 440 transitions. [2023-11-26 12:01:19,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8301886792452831 [2023-11-26 12:01:19,775 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 440 transitions. [2023-11-26 12:01:19,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 440 transitions. [2023-11-26 12:01:19,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:19,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 440 transitions. [2023-11-26 12:01:19,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,780 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,781 INFO L175 Difference]: Start difference. First operand has 207 places, 208 transitions, 437 flow. Second operand 2 states and 440 transitions. [2023-11-26 12:01:19,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 164 transitions, 373 flow [2023-11-26 12:01:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 164 transitions, 370 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:19,786 INFO L231 Difference]: Finished difference. Result has 170 places, 164 transitions, 346 flow [2023-11-26 12:01:19,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=346, PETRI_PLACES=170, PETRI_TRANSITIONS=164} [2023-11-26 12:01:19,788 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -37 predicate places. [2023-11-26 12:01:19,788 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 164 transitions, 346 flow [2023-11-26 12:01:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:19,789 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] [2023-11-26 12:01:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:19,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-11-26 12:01:19,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -948968338, now seen corresponding path program 1 times [2023-11-26 12:01:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798138819] [2023-11-26 12:01:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798138819] [2023-11-26 12:01:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798138819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:19,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886415316] [2023-11-26 12:01:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:19,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 265 [2023-11-26 12:01:19,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 164 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:19,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 265 [2023-11-26 12:01:19,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:26,071 INFO L124 PetriNetUnfolderBase]: 10718/30823 cut-off events. [2023-11-26 12:01:26,072 INFO L125 PetriNetUnfolderBase]: For 1485/1485 co-relation queries the response was YES. [2023-11-26 12:01:26,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46900 conditions, 30823 events. 10718/30823 cut-off events. For 1485/1485 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 363958 event pairs, 2985 based on Foata normal form. 0/25334 useless extension candidates. Maximal degree in co-relation 46894. Up to 8343 conditions per place. [2023-11-26 12:01:26,620 INFO L140 encePairwiseOnDemand]: 250/265 looper letters, 38 selfloop transitions, 11 changer transitions 0/186 dead transitions. [2023-11-26 12:01:26,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 186 transitions, 501 flow [2023-11-26 12:01:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-26 12:01:26,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-26 12:01:26,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-26 12:01:26,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-26 12:01:26,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:26,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-26 12:01:26,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:26,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:26,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:26,633 INFO L175 Difference]: Start difference. First operand has 170 places, 164 transitions, 346 flow. Second operand 3 states and 590 transitions. [2023-11-26 12:01:26,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 186 transitions, 501 flow [2023-11-26 12:01:26,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 186 transitions, 501 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:26,642 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 442 flow [2023-11-26 12:01:26,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2023-11-26 12:01:26,644 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -33 predicate places. [2023-11-26 12:01:26,644 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 442 flow [2023-11-26 12:01:26,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:26,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:26,647 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] [2023-11-26 12:01:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:01:26,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-11-26 12:01:26,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1425471504, now seen corresponding path program 1 times [2023-11-26 12:01:26,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942042530] [2023-11-26 12:01:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942042530] [2023-11-26 12:01:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942042530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:26,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808513184] [2023-11-26 12:01:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:26,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 265 [2023-11-26 12:01:26,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:26,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:26,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 265 [2023-11-26 12:01:26,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:31,820 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 274#(= |#race~b~0| 0), 152#L719-1true, 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 178#L708-1true]) [2023-11-26 12:01:31,820 INFO L294 olderBase$Statistics]: this new event has 87 ancestors and is cut-off event [2023-11-26 12:01:31,821 INFO L297 olderBase$Statistics]: existing Event has 79 ancestors and is cut-off event [2023-11-26 12:01:31,821 INFO L297 olderBase$Statistics]: existing Event has 79 ancestors and is cut-off event [2023-11-26 12:01:31,821 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2023-11-26 12:01:39,262 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 152#L719-1true, 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 226#L707true, 178#L708-1true]) [2023-11-26 12:01:39,263 INFO L294 olderBase$Statistics]: this new event has 99 ancestors and is cut-off event [2023-11-26 12:01:39,263 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:39,263 INFO L297 olderBase$Statistics]: existing Event has 76 ancestors and is cut-off event [2023-11-26 12:01:39,263 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2023-11-26 12:01:39,264 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 147#L720-3true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 226#L707true, 178#L708-1true]) [2023-11-26 12:01:39,264 INFO L294 olderBase$Statistics]: this new event has 95 ancestors and is cut-off event [2023-11-26 12:01:39,264 INFO L297 olderBase$Statistics]: existing Event has 64 ancestors and is cut-off event [2023-11-26 12:01:39,264 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-11-26 12:01:39,264 INFO L297 olderBase$Statistics]: existing Event has 95 ancestors and is cut-off event [2023-11-26 12:01:39,265 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 226#L707true, 196#L720-2true, 178#L708-1true]) [2023-11-26 12:01:39,265 INFO L294 olderBase$Statistics]: this new event has 94 ancestors and is cut-off event [2023-11-26 12:01:39,265 INFO L297 olderBase$Statistics]: existing Event has 94 ancestors and is cut-off event [2023-11-26 12:01:39,265 INFO L297 olderBase$Statistics]: existing Event has 63 ancestors and is cut-off event [2023-11-26 12:01:39,266 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2023-11-26 12:01:39,266 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 77#L721true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 226#L707true, 178#L708-1true]) [2023-11-26 12:01:39,266 INFO L294 olderBase$Statistics]: this new event has 97 ancestors and is cut-off event [2023-11-26 12:01:39,266 INFO L297 olderBase$Statistics]: existing Event has 66 ancestors and is cut-off event [2023-11-26 12:01:39,267 INFO L297 olderBase$Statistics]: existing Event has 74 ancestors and is cut-off event [2023-11-26 12:01:39,267 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2023-11-26 12:01:39,939 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 152#L719-1true, 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), 98#L707-1true, thr1Thread1of3ForFork1InUse, 93#L730-4true, 178#L708-1true]) [2023-11-26 12:01:39,940 INFO L294 olderBase$Statistics]: this new event has 100 ancestors and is cut-off event [2023-11-26 12:01:39,940 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2023-11-26 12:01:39,940 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2023-11-26 12:01:39,940 INFO L297 olderBase$Statistics]: existing Event has 100 ancestors and is cut-off event [2023-11-26 12:01:39,940 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 147#L720-3true, 268#(= |#race~a~0| 0), 98#L707-1true, thr1Thread1of3ForFork1InUse, 93#L730-4true, 178#L708-1true]) [2023-11-26 12:01:39,941 INFO L294 olderBase$Statistics]: this new event has 96 ancestors and is cut-off event [2023-11-26 12:01:39,941 INFO L297 olderBase$Statistics]: existing Event has 96 ancestors and is cut-off event [2023-11-26 12:01:39,941 INFO L297 olderBase$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-11-26 12:01:39,941 INFO L297 olderBase$Statistics]: existing Event has 65 ancestors and is cut-off event [2023-11-26 12:01:39,941 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), 98#L707-1true, thr1Thread1of3ForFork1InUse, 93#L730-4true, 196#L720-2true, 178#L708-1true]) [2023-11-26 12:01:39,941 INFO L294 olderBase$Statistics]: this new event has 95 ancestors and is cut-off event [2023-11-26 12:01:39,942 INFO L297 olderBase$Statistics]: existing Event has 64 ancestors and is cut-off event [2023-11-26 12:01:39,942 INFO L297 olderBase$Statistics]: existing Event has 95 ancestors and is cut-off event [2023-11-26 12:01:39,942 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-11-26 12:01:39,943 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 77#L721true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), 98#L707-1true, thr1Thread1of3ForFork1InUse, 93#L730-4true, 178#L708-1true]) [2023-11-26 12:01:39,943 INFO L294 olderBase$Statistics]: this new event has 98 ancestors and is cut-off event [2023-11-26 12:01:39,943 INFO L297 olderBase$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-11-26 12:01:39,943 INFO L297 olderBase$Statistics]: existing Event has 98 ancestors and is cut-off event [2023-11-26 12:01:39,944 INFO L297 olderBase$Statistics]: existing Event has 67 ancestors and is cut-off event [2023-11-26 12:01:47,286 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), 93#L730-4true, thr1Thread1of3ForFork1InUse, 196#L720-2true, 178#L708-1true]) [2023-11-26 12:01:47,286 INFO L294 olderBase$Statistics]: this new event has 105 ancestors and is cut-off event [2023-11-26 12:01:47,286 INFO L297 olderBase$Statistics]: existing Event has 74 ancestors and is cut-off event [2023-11-26 12:01:47,286 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-26 12:01:47,286 INFO L297 olderBase$Statistics]: existing Event has 74 ancestors and is cut-off event [2023-11-26 12:01:48,161 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 147#L720-3true, 268#(= |#race~a~0| 0), 93#L730-4true, thr1Thread1of3ForFork1InUse, 178#L708-1true]) [2023-11-26 12:01:48,161 INFO L294 olderBase$Statistics]: this new event has 106 ancestors and is cut-off event [2023-11-26 12:01:48,161 INFO L297 olderBase$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-11-26 12:01:48,161 INFO L297 olderBase$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-11-26 12:01:48,162 INFO L297 olderBase$Statistics]: existing Event has 83 ancestors and is cut-off event [2023-11-26 12:01:48,368 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([971] L706-1-->L707: Formula: (= |v_#race~a~0_1| 0) InVars {} OutVars{#race~a~0=|v_#race~a~0_1|} AuxVars[] AssignedVars[#race~a~0][101], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 86#L707true, 263#true, 150#L720-1true, Black: 266#true, 5#thr2Err2ASSERT_VIOLATIONDATA_RACEtrue, 115#L708-5true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 272#true]) [2023-11-26 12:01:48,368 INFO L294 olderBase$Statistics]: this new event has 107 ancestors and is cut-off event [2023-11-26 12:01:48,368 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,368 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,368 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,368 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L720-1-->L720-2: Formula: (= |v_#race~b~0_7| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_7|} AuxVars[] AssignedVars[#race~b~0][29], [thr2Thread1of3ForFork0InUse, 42#L706-1true, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 5#thr2Err2ASSERT_VIOLATIONDATA_RACEtrue, 115#L708-5true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 196#L720-2true]) [2023-11-26 12:01:48,368 INFO L294 olderBase$Statistics]: this new event has 107 ancestors and is cut-off event [2023-11-26 12:01:48,369 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,369 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,369 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2023-11-26 12:01:48,554 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([938] L708-4-->L708-5: Formula: (= |v_thr2Thread2of3ForFork0_#t~nondet6#1_3| |v_#race~a~0_4|) InVars {thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} OutVars{#race~a~0=|v_#race~a~0_4|, thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} AuxVars[] AssignedVars[#race~a~0][103], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 274#(= |#race~b~0| 0), 86#L707true, 266#true, 263#true, Black: 268#(= |#race~a~0| 0), 150#L720-1true, 115#L708-5true, 93#L730-4true, thr1Thread1of3ForFork1InUse]) [2023-11-26 12:01:48,555 INFO L294 olderBase$Statistics]: this new event has 109 ancestors and is cut-off event [2023-11-26 12:01:48,555 INFO L297 olderBase$Statistics]: existing Event has 86 ancestors and is cut-off event [2023-11-26 12:01:48,555 INFO L297 olderBase$Statistics]: existing Event has 109 ancestors and is cut-off event [2023-11-26 12:01:48,555 INFO L297 olderBase$Statistics]: existing Event has 78 ancestors and is cut-off event [2023-11-26 12:01:48,556 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([938] L708-4-->L708-5: Formula: (= |v_thr2Thread2of3ForFork0_#t~nondet6#1_3| |v_#race~a~0_4|) InVars {thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} OutVars{#race~a~0=|v_#race~a~0_4|, thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} AuxVars[] AssignedVars[#race~a~0][103], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 104#L720true, 63#L707-1true, 274#(= |#race~b~0| 0), 266#true, 263#true, Black: 268#(= |#race~a~0| 0), 115#L708-5true, 93#L730-4true, thr1Thread1of3ForFork1InUse]) [2023-11-26 12:01:48,556 INFO L294 olderBase$Statistics]: this new event has 109 ancestors and is cut-off event [2023-11-26 12:01:48,556 INFO L297 olderBase$Statistics]: existing Event has 109 ancestors and is cut-off event [2023-11-26 12:01:48,556 INFO L297 olderBase$Statistics]: existing Event has 86 ancestors and is cut-off event [2023-11-26 12:01:48,556 INFO L297 olderBase$Statistics]: existing Event has 78 ancestors and is cut-off event [2023-11-26 12:01:48,697 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 77#L721true, 122#L708-5true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 40#L706-1true, 268#(= |#race~a~0| 0), thr1Thread1of3ForFork1InUse, 93#L730-4true, 178#L708-1true]) [2023-11-26 12:01:48,697 INFO L294 olderBase$Statistics]: this new event has 108 ancestors and is cut-off event [2023-11-26 12:01:48,697 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2023-11-26 12:01:48,697 INFO L297 olderBase$Statistics]: existing Event has 85 ancestors and is cut-off event [2023-11-26 12:01:48,697 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2023-11-26 12:01:48,794 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([938] L708-4-->L708-5: Formula: (= |v_thr2Thread2of3ForFork0_#t~nondet6#1_3| |v_#race~a~0_4|) InVars {thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} OutVars{#race~a~0=|v_#race~a~0_4|, thr2Thread2of3ForFork0_#t~nondet6#1=|v_thr2Thread2of3ForFork0_#t~nondet6#1_3|} AuxVars[] AssignedVars[#race~a~0][103], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 63#L707-1true, 274#(= |#race~b~0| 0), 266#true, 263#true, Black: 268#(= |#race~a~0| 0), 150#L720-1true, 115#L708-5true, 93#L730-4true, thr1Thread1of3ForFork1InUse]) [2023-11-26 12:01:48,795 INFO L294 olderBase$Statistics]: this new event has 110 ancestors and is cut-off event [2023-11-26 12:01:48,795 INFO L297 olderBase$Statistics]: existing Event has 110 ancestors and is cut-off event [2023-11-26 12:01:48,795 INFO L297 olderBase$Statistics]: existing Event has 87 ancestors and is cut-off event [2023-11-26 12:01:48,795 INFO L297 olderBase$Statistics]: existing Event has 79 ancestors and is cut-off event [2023-11-26 12:01:50,170 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 104#L720true, 274#(= |#race~b~0| 0), 263#true, Black: 266#true, 268#(= |#race~a~0| 0), 185#L708-2true, 93#L730-4true, thr1Thread1of3ForFork1InUse, 178#L708-1true]) [2023-11-26 12:01:50,170 INFO L294 olderBase$Statistics]: this new event has 112 ancestors and is cut-off event [2023-11-26 12:01:50,171 INFO L297 olderBase$Statistics]: existing Event has 112 ancestors and is cut-off event [2023-11-26 12:01:50,171 INFO L297 olderBase$Statistics]: existing Event has 89 ancestors and is cut-off event [2023-11-26 12:01:50,171 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-11-26 12:01:50,372 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([981] L708-->L708-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][140], [thr2Thread1of3ForFork0InUse, thr2Thread2of3ForFork0InUse, thr2Thread3of3ForFork0InUse, 122#L708-5true, 274#(= |#race~b~0| 0), 263#true, 150#L720-1true, Black: 266#true, 185#L708-2true, 268#(= |#race~a~0| 0), 93#L730-4true, thr1Thread1of3ForFork1InUse, 178#L708-1true]) [2023-11-26 12:01:50,373 INFO L294 olderBase$Statistics]: this new event has 113 ancestors and is cut-off event [2023-11-26 12:01:50,373 INFO L297 olderBase$Statistics]: existing Event has 113 ancestors and is cut-off event [2023-11-26 12:01:50,373 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is cut-off event [2023-11-26 12:01:50,373 INFO L297 olderBase$Statistics]: existing Event has 90 ancestors and is cut-off event [2023-11-26 12:01:52,565 INFO L124 PetriNetUnfolderBase]: 53118/159504 cut-off events. [2023-11-26 12:01:52,565 INFO L125 PetriNetUnfolderBase]: For 12718/13193 co-relation queries the response was YES. [2023-11-26 12:01:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256649 conditions, 159504 events. 53118/159504 cut-off events. For 12718/13193 co-relation queries the response was YES. Maximal size of possible extension queue 4875. Compared 2415811 event pairs, 14748 based on Foata normal form. 0/133191 useless extension candidates. Maximal degree in co-relation 256641. Up to 35515 conditions per place. [2023-11-26 12:01:55,020 INFO L140 encePairwiseOnDemand]: 250/265 looper letters, 38 selfloop transitions, 11 changer transitions 0/197 dead transitions. [2023-11-26 12:01:55,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 597 flow [2023-11-26 12:01:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-26 12:01:55,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-26 12:01:55,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-26 12:01:55,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-26 12:01:55,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:55,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-26 12:01:55,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:55,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:55,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:55,031 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 442 flow. Second operand 3 states and 590 transitions. [2023-11-26 12:01:55,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 597 flow [2023-11-26 12:01:55,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 197 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:55,160 INFO L231 Difference]: Finished difference. Result has 176 places, 186 transitions, 516 flow [2023-11-26 12:01:55,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=176, PETRI_TRANSITIONS=186} [2023-11-26 12:01:55,161 INFO L281 CegarLoopForPetriNet]: 207 programPoint places, -31 predicate places. [2023-11-26 12:01:55,161 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 186 transitions, 516 flow [2023-11-26 12:01:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:55,162 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] [2023-11-26 12:01:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:01:55,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-11-26 12:01:55,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -835093400, now seen corresponding path program 1 times [2023-11-26 12:01:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276080525] [2023-11-26 12:01:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:55,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276080525] [2023-11-26 12:01:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276080525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:55,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829556406] [2023-11-26 12:01:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:55,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:55,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 265 [2023-11-26 12:01:55,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 186 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:55,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:55,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 265 [2023-11-26 12:01:55,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand