./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.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_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/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_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/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_f58a43a4-fcf7-4907-b47c-f3585779c67e/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 f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:12,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:12,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:01:12,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:12,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:12,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:12,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:12,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:12,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:12,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:12,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:12,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:12,246 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:12,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:12,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:12,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:12,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:12,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:12,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:12,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:12,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:12,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:12,252 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:01:12,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:12,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:12,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:12,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:12,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:12,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:12,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:12,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:12,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:12,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:12,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:12,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:12,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:12,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:12,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:12,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:12,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:12,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:12,262 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_f58a43a4-fcf7-4907-b47c-f3585779c67e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e [2023-11-26 12:01:12,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:12,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:12,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:12,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:12,578 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:12,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-26 12:01:15,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:16,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:16,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-26 12:01:16,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/data/6d8169dbf/c0e556756e0a4af284209fcba53c1bfa/FLAGcca65cc76 [2023-11-26 12:01:16,158 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/data/6d8169dbf/c0e556756e0a4af284209fcba53c1bfa [2023-11-26 12:01:16,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:16,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:16,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:16,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:16,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:16,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a64dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16, skipping insertion in model container [2023-11-26 12:01:16,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:16,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:16,616 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:16,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:16,742 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:16,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16 WrapperNode [2023-11-26 12:01:16,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:16,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:16,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:16,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:16,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,816 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-11-26 12:01:16,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:16,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:16,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:16,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:16,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:16,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:16,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:16,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:16,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (1/1) ... [2023-11-26 12:01:16,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:16,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:16,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58a43a4-fcf7-4907-b47c-f3585779c67e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 12:01:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 12:01:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:01:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:01:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:01:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:01:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:01:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:01:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:16,953 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 12:01:17,156 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:17,168 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:17,357 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:17,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:17,376 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:01:17,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:17 BoogieIcfgContainer [2023-11-26 12:01:17,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:17,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:17,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:17,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:17,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:16" (1/3) ... [2023-11-26 12:01:17,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e155eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:17, skipping insertion in model container [2023-11-26 12:01:17,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:16" (2/3) ... [2023-11-26 12:01:17,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e155eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:17, skipping insertion in model container [2023-11-26 12:01:17,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:17" (3/3) ... [2023-11-26 12:01:17,388 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2023-11-26 12:01:17,397 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:01:17,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:17,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-26 12:01:17,409 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:01:17,494 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:17,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 63 transitions, 130 flow [2023-11-26 12:01:17,603 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-26 12:01:17,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:17,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 4/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-11-26 12:01:17,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 63 transitions, 130 flow [2023-11-26 12:01:17,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 63 transitions, 130 flow [2023-11-26 12:01:17,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:17,636 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;@6c568bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:17,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 12:01:17,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:17,668 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 12:01:17,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:17,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:17,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:17,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:01:17,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -546884405, now seen corresponding path program 1 times [2023-11-26 12:01:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395918006] [2023-11-26 12:01:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:17,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,944 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 12:01:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395918006] [2023-11-26 12:01:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395918006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:17,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223553198] [2023-11-26 12:01:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:17,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:18,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 63 [2023-11-26 12:01:18,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 12:01:18,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:18,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 63 [2023-11-26 12:01:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:18,064 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-26 12:01:18,065 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:01:18,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 11/62 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-11-26 12:01:18,066 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 7 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-26 12:01:18,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 122 flow [2023-11-26 12:01:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-26 12:01:18,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2023-11-26 12:01:18,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-26 12:01:18,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-26 12:01:18,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:18,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-26 12:01:18,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:01:18,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 12:01:18,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 12:01:18,097 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 3 states and 160 transitions. [2023-11-26 12:01:18,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 122 flow [2023-11-26 12:01:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:18,103 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 108 flow [2023-11-26 12:01:18,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-26 12:01:18,109 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-11-26 12:01:18,110 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 108 flow [2023-11-26 12:01:18,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 12:01:18,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:18,110 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] [2023-11-26 12:01:18,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:18,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:01:18,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2017439352, now seen corresponding path program 1 times [2023-11-26 12:01:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527727536] [2023-11-26 12:01:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:18,238 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:18,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-26 12:01:18,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-26 12:01:18,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-26 12:01:18,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-26 12:01:18,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-26 12:01:18,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-26 12:01:18,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-26 12:01:18,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:18,245 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 12:01:18,248 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:18,249 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:01:18,295 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:18,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 200 flow [2023-11-26 12:01:18,364 INFO L124 PetriNetUnfolderBase]: 7/119 cut-off events. [2023-11-26 12:01:18,367 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:01:18,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 119 events. 7/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2023-11-26 12:01:18,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 95 transitions, 200 flow [2023-11-26 12:01:18,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 200 flow [2023-11-26 12:01:18,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:18,378 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;@6c568bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:18,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 12:01:18,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:18,401 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 12:01:18,401 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:01:18,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:18,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:18,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 12:01:18,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1806090646, now seen corresponding path program 1 times [2023-11-26 12:01:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254609824] [2023-11-26 12:01:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,482 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 12:01:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254609824] [2023-11-26 12:01:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254609824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:18,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:18,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106003866] [2023-11-26 12:01:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:18,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:18,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:18,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-26 12:01:18,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:18,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-26 12:01:18,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:18,667 INFO L124 PetriNetUnfolderBase]: 57/334 cut-off events. [2023-11-26 12:01:18,667 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-26 12:01:18,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 334 events. 57/334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1694 event pairs, 37 based on Foata normal form. 108/396 useless extension candidates. Maximal degree in co-relation 386. Up to 109 conditions per place. [2023-11-26 12:01:18,677 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 18 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-11-26 12:01:18,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 235 flow [2023-11-26 12:01:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-26 12:01:18,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8701754385964913 [2023-11-26 12:01:18,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-26 12:01:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-26 12:01:18,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:18,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-26 12:01:18,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 12:01:18,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 12:01:18,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 12:01:18,697 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 200 flow. Second operand 3 states and 248 transitions. [2023-11-26 12:01:18,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 235 flow [2023-11-26 12:01:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:18,704 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 212 flow [2023-11-26 12:01:18,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2023-11-26 12:01:18,706 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -8 predicate places. [2023-11-26 12:01:18,706 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 212 flow [2023-11-26 12:01:18,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:18,707 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 12:01:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:18,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 12:01:18,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -828825003, now seen corresponding path program 1 times [2023-11-26 12:01:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153801778] [2023-11-26 12:01:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,793 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 12:01:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153801778] [2023-11-26 12:01:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153801778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938623398] [2023-11-26 12:01:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:18,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:18,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:18,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-26 12:01:18,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:18,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-26 12:01:18,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:18,904 INFO L124 PetriNetUnfolderBase]: 69/384 cut-off events. [2023-11-26 12:01:18,904 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-26 12:01:18,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 384 events. 69/384 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2062 event pairs, 37 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 544. Up to 123 conditions per place. [2023-11-26 12:01:18,908 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 21 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-26 12:01:18,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 293 flow [2023-11-26 12:01:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-26 12:01:18,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8350877192982457 [2023-11-26 12:01:18,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-26 12:01:18,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-26 12:01:18,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:18,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-26 12:01:18,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 12:01:18,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 12:01:18,914 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 212 flow. Second operand 3 states and 238 transitions. [2023-11-26 12:01:18,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 293 flow [2023-11-26 12:01:18,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:18,924 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 252 flow [2023-11-26 12:01:18,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2023-11-26 12:01:18,927 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2023-11-26 12:01:18,927 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 252 flow [2023-11-26 12:01:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:18,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:18,928 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] [2023-11-26 12:01:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:18,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 12:01:18,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1680372909, now seen corresponding path program 1 times [2023-11-26 12:01:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974714515] [2023-11-26 12:01:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:18,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:18,985 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:18,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-26 12:01:18,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-26 12:01:18,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-26 12:01:18,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-26 12:01:18,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-26 12:01:18,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-26 12:01:18,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-26 12:01:18,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-26 12:01:18,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-26 12:01:18,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-26 12:01:18,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:18,988 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 12:01:18,989 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:18,989 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:01:19,015 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:19,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 272 flow [2023-11-26 12:01:19,044 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-26 12:01:19,044 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 12:01:19,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 10/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2023-11-26 12:01:19,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 272 flow [2023-11-26 12:01:19,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 127 transitions, 272 flow [2023-11-26 12:01:19,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:19,050 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;@6c568bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:19,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 12:01:19,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:19,056 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 12:01:19,056 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:01:19,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:19,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:19,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:19,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1158823850, now seen corresponding path program 1 times [2023-11-26 12:01:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774750388] [2023-11-26 12:01:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,149 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 12:01:19,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774750388] [2023-11-26 12:01:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774750388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870262698] [2023-11-26 12:01:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:19,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-26 12:01:19,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:01:19,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:19,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-26 12:01:19,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:19,737 INFO L124 PetriNetUnfolderBase]: 783/2705 cut-off events. [2023-11-26 12:01:19,737 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2023-11-26 12:01:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 2705 events. 783/2705 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23807 event pairs, 556 based on Foata normal form. 838/3132 useless extension candidates. Maximal degree in co-relation 3387. Up to 1091 conditions per place. [2023-11-26 12:01:19,771 INFO L140 encePairwiseOnDemand]: 109/127 looper letters, 27 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2023-11-26 12:01:19,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 119 transitions, 340 flow [2023-11-26 12:01:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-26 12:01:19,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-26 12:01:19,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-26 12:01:19,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-26 12:01:19,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:19,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-26 12:01:19,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:01:19,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:19,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:19,778 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 272 flow. Second operand 3 states and 333 transitions. [2023-11-26 12:01:19,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 119 transitions, 340 flow [2023-11-26 12:01:19,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 119 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:19,784 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 296 flow [2023-11-26 12:01:19,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-26 12:01:19,788 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -11 predicate places. [2023-11-26 12:01:19,789 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 296 flow [2023-11-26 12:01:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:01:19,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:19,790 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 12:01:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:19,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:19,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash -758629932, now seen corresponding path program 1 times [2023-11-26 12:01:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600037999] [2023-11-26 12:01:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,876 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 12:01:19,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600037999] [2023-11-26 12:01:19,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600037999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:19,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:19,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:19,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003596537] [2023-11-26 12:01:19,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:19,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-26 12:01:19,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:19,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-26 12:01:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:20,551 INFO L124 PetriNetUnfolderBase]: 1015/3344 cut-off events. [2023-11-26 12:01:20,551 INFO L125 PetriNetUnfolderBase]: For 1009/1031 co-relation queries the response was YES. [2023-11-26 12:01:20,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 3344 events. 1015/3344 cut-off events. For 1009/1031 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30465 event pairs, 645 based on Foata normal form. 0/2842 useless extension candidates. Maximal degree in co-relation 6059. Up to 1358 conditions per place. [2023-11-26 12:01:20,600 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 33 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2023-11-26 12:01:20,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 430 flow [2023-11-26 12:01:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-26 12:01:20,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8372703412073491 [2023-11-26 12:01:20,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-26 12:01:20,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-26 12:01:20,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:20,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-26 12:01:20,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 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 12:01:20,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:20,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:20,656 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 296 flow. Second operand 3 states and 319 transitions. [2023-11-26 12:01:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 430 flow [2023-11-26 12:01:20,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:20,663 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 360 flow [2023-11-26 12:01:20,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2023-11-26 12:01:20,664 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -9 predicate places. [2023-11-26 12:01:20,664 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 360 flow [2023-11-26 12:01:20,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:20,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:20,665 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, 1, 1, 1, 1] [2023-11-26 12:01:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:01:20,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:20,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380159, now seen corresponding path program 1 times [2023-11-26 12:01:20,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341337187] [2023-11-26 12:01:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341337187] [2023-11-26 12:01:20,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341337187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:20,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:20,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752100154] [2023-11-26 12:01:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:20,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:20,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-26 12:01:20,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:20,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-26 12:01:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:21,685 INFO L124 PetriNetUnfolderBase]: 1566/4678 cut-off events. [2023-11-26 12:01:21,685 INFO L125 PetriNetUnfolderBase]: For 2828/2925 co-relation queries the response was YES. [2023-11-26 12:01:21,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 4678 events. 1566/4678 cut-off events. For 2828/2925 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 44080 event pairs, 800 based on Foata normal form. 1/3959 useless extension candidates. Maximal degree in co-relation 9809. Up to 1918 conditions per place. [2023-11-26 12:01:21,762 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 36 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2023-11-26 12:01:21,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 140 transitions, 551 flow [2023-11-26 12:01:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-26 12:01:21,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-26 12:01:21,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-26 12:01:21,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-26 12:01:21,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:21,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-26 12:01:21,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 12:01:21,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:21,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:21,775 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 360 flow. Second operand 3 states and 318 transitions. [2023-11-26 12:01:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 140 transitions, 551 flow [2023-11-26 12:01:21,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 507 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:21,795 INFO L231 Difference]: Finished difference. Result has 120 places, 135 transitions, 484 flow [2023-11-26 12:01:21,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=120, PETRI_TRANSITIONS=135} [2023-11-26 12:01:21,797 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -7 predicate places. [2023-11-26 12:01:21,798 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 484 flow [2023-11-26 12:01:21,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:21,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:21,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:01:21,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:21,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash -225946769, now seen corresponding path program 1 times [2023-11-26 12:01:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:21,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891127626] [2023-11-26 12:01:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:21,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,862 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 12:01:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891127626] [2023-11-26 12:01:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891127626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:21,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:21,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410489889] [2023-11-26 12:01:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:21,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2023-11-26 12:01:21,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 12:01:21,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:21,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2023-11-26 12:01:21,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:23,294 INFO L124 PetriNetUnfolderBase]: 2598/8187 cut-off events. [2023-11-26 12:01:23,295 INFO L125 PetriNetUnfolderBase]: For 8320/8448 co-relation queries the response was YES. [2023-11-26 12:01:23,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18642 conditions, 8187 events. 2598/8187 cut-off events. For 8320/8448 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 86666 event pairs, 572 based on Foata normal form. 6/6935 useless extension candidates. Maximal degree in co-relation 18529. Up to 1919 conditions per place. [2023-11-26 12:01:23,409 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 54 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2023-11-26 12:01:23,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 870 flow [2023-11-26 12:01:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-26 12:01:23,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2023-11-26 12:01:23,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-26 12:01:23,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-26 12:01:23,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:23,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-26 12:01:23,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 12:01:23,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:23,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:23,418 INFO L175 Difference]: Start difference. First operand has 120 places, 135 transitions, 484 flow. Second operand 3 states and 323 transitions. [2023-11-26 12:01:23,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 870 flow [2023-11-26 12:01:23,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:23,433 INFO L231 Difference]: Finished difference. Result has 122 places, 165 transitions, 814 flow [2023-11-26 12:01:23,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=122, PETRI_TRANSITIONS=165} [2023-11-26 12:01:23,435 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2023-11-26 12:01:23,435 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 165 transitions, 814 flow [2023-11-26 12:01:23,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 12:01:23,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:23,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:23,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:01:23,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:23,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -86142850, now seen corresponding path program 1 times [2023-11-26 12:01:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845963856] [2023-11-26 12:01:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:23,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845963856] [2023-11-26 12:01:23,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845963856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:23,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:23,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052770594] [2023-11-26 12:01:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:23,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:23,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-26 12:01:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 165 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 12:01:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-26 12:01:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:25,330 INFO L124 PetriNetUnfolderBase]: 3523/10450 cut-off events. [2023-11-26 12:01:25,330 INFO L125 PetriNetUnfolderBase]: For 21032/21486 co-relation queries the response was YES. [2023-11-26 12:01:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 10450 events. 3523/10450 cut-off events. For 21032/21486 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 113574 event pairs, 1043 based on Foata normal form. 15/8940 useless extension candidates. Maximal degree in co-relation 27855. Up to 4052 conditions per place. [2023-11-26 12:01:25,607 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 72 selfloop transitions, 26 changer transitions 0/190 dead transitions. [2023-11-26 12:01:25,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 1197 flow [2023-11-26 12:01:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-26 12:01:25,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-26 12:01:25,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-26 12:01:25,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-26 12:01:25,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:25,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-26 12:01:25,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 12:01:25,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:25,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:25,614 INFO L175 Difference]: Start difference. First operand has 122 places, 165 transitions, 814 flow. Second operand 3 states and 318 transitions. [2023-11-26 12:01:25,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 1197 flow [2023-11-26 12:01:25,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1117 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:25,668 INFO L231 Difference]: Finished difference. Result has 124 places, 185 transitions, 1052 flow [2023-11-26 12:01:25,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=124, PETRI_TRANSITIONS=185} [2023-11-26 12:01:25,674 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -3 predicate places. [2023-11-26 12:01:25,674 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 185 transitions, 1052 flow [2023-11-26 12:01:25,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 12:01:25,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:25,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:25,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:25,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1038258495, now seen corresponding path program 1 times [2023-11-26 12:01:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812287524] [2023-11-26 12:01:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:25,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812287524] [2023-11-26 12:01:25,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812287524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:25,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:25,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035063201] [2023-11-26 12:01:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:25,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:25,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:25,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2023-11-26 12:01:25,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 185 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 12:01:25,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:25,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2023-11-26 12:01:25,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:25,892 INFO L124 PetriNetUnfolderBase]: 15/373 cut-off events. [2023-11-26 12:01:25,892 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-26 12:01:25,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 373 events. 15/373 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1507 event pairs, 3 based on Foata normal form. 14/362 useless extension candidates. Maximal degree in co-relation 362. Up to 29 conditions per place. [2023-11-26 12:01:25,895 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 6 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-11-26 12:01:25,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 382 flow [2023-11-26 12:01:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-26 12:01:25,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-26 12:01:25,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-26 12:01:25,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-26 12:01:25,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:25,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-26 12:01:25,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:01:25,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:25,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 12:01:25,901 INFO L175 Difference]: Start difference. First operand has 124 places, 185 transitions, 1052 flow. Second operand 3 states and 333 transitions. [2023-11-26 12:01:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 382 flow [2023-11-26 12:01:25,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 274 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-11-26 12:01:25,906 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 248 flow [2023-11-26 12:01:25,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2023-11-26 12:01:25,907 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -18 predicate places. [2023-11-26 12:01:25,907 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 248 flow [2023-11-26 12:01:25,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 12:01:25,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:25,908 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:01:25,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 12:01:25,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1622906571, now seen corresponding path program 1 times [2023-11-26 12:01:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047559642] [2023-11-26 12:01:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:25,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:25,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:25,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:25,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 12:01:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-26 12:01:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-26 12:01:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-26 12:01:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-26 12:01:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-26 12:01:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-26 12:01:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-26 12:01:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-26 12:01:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-26 12:01:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-26 12:01:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-26 12:01:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-26 12:01:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:01:25,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:25,958 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:25,958 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 12:01:26,008 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:01:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 346 flow [2023-11-26 12:01:26,061 INFO L124 PetriNetUnfolderBase]: 13/209 cut-off events. [2023-11-26 12:01:26,061 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:01:26,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 209 events. 13/209 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 564 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 172. Up to 10 conditions per place. [2023-11-26 12:01:26,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 346 flow [2023-11-26 12:01:26,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 159 transitions, 346 flow [2023-11-26 12:01:26,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:26,072 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;@6c568bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:26,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 12:01:26,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:26,077 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-26 12:01:26,077 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:01:26,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:26,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:26,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 12:01:26,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash 782752137, now seen corresponding path program 1 times [2023-11-26 12:01:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:26,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144305314] [2023-11-26 12:01:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,112 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 12:01:26,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144305314] [2023-11-26 12:01:26,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144305314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:26,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:26,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060142368] [2023-11-26 12:01:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:26,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:26,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-26 12:01:26,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 159 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 12:01:26,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:26,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-26 12:01:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:29,559 INFO L124 PetriNetUnfolderBase]: 7395/19566 cut-off events. [2023-11-26 12:01:29,559 INFO L125 PetriNetUnfolderBase]: For 4630/4630 co-relation queries the response was YES. [2023-11-26 12:01:29,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32423 conditions, 19566 events. 7395/19566 cut-off events. For 4630/4630 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 217380 event pairs, 5488 based on Foata normal form. 6072/22846 useless extension candidates. Maximal degree in co-relation 25204. Up to 9127 conditions per place. [2023-11-26 12:01:29,831 INFO L140 encePairwiseOnDemand]: 136/159 looper letters, 36 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2023-11-26 12:01:29,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 152 transitions, 449 flow [2023-11-26 12:01:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-26 12:01:29,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8763102725366876 [2023-11-26 12:01:29,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-26 12:01:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-26 12:01:29,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:29,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-26 12:01:29,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 12:01:29,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:29,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:29,842 INFO L175 Difference]: Start difference. First operand has 159 places, 159 transitions, 346 flow. Second operand 3 states and 418 transitions. [2023-11-26 12:01:29,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 152 transitions, 449 flow [2023-11-26 12:01:29,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 152 transitions, 437 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:29,849 INFO L231 Difference]: Finished difference. Result has 145 places, 143 transitions, 380 flow [2023-11-26 12:01:29,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=145, PETRI_TRANSITIONS=143} [2023-11-26 12:01:29,852 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -14 predicate places. [2023-11-26 12:01:29,853 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 143 transitions, 380 flow [2023-11-26 12:01:29,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 12:01:29,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:29,854 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 12:01:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:01:29,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 12:01:29,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 992060563, now seen corresponding path program 1 times [2023-11-26 12:01:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:29,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966144268] [2023-11-26 12:01:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,891 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 12:01:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966144268] [2023-11-26 12:01:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966144268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150033730] [2023-11-26 12:01:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:29,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-26 12:01:29,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 143 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 12:01:29,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:29,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-26 12:01:29,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:33,781 INFO L124 PetriNetUnfolderBase]: 9861/25443 cut-off events. [2023-11-26 12:01:33,782 INFO L125 PetriNetUnfolderBase]: For 7988/8147 co-relation queries the response was YES. [2023-11-26 12:01:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49313 conditions, 25443 events. 9861/25443 cut-off events. For 7988/8147 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 290863 event pairs, 6724 based on Foata normal form. 0/21870 useless extension candidates. Maximal degree in co-relation 49192. Up to 11893 conditions per place. [2023-11-26 12:01:34,095 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 45 selfloop transitions, 12 changer transitions 0/163 dead transitions. [2023-11-26 12:01:34,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 163 transitions, 567 flow [2023-11-26 12:01:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-11-26 12:01:34,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8385744234800838 [2023-11-26 12:01:34,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-11-26 12:01:34,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-11-26 12:01:34,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:34,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-11-26 12:01:34,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:01:34,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:34,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:34,102 INFO L175 Difference]: Start difference. First operand has 145 places, 143 transitions, 380 flow. Second operand 3 states and 400 transitions. [2023-11-26 12:01:34,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 163 transitions, 567 flow [2023-11-26 12:01:34,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 163 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:34,153 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 468 flow [2023-11-26 12:01:34,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2023-11-26 12:01:34,155 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -12 predicate places. [2023-11-26 12:01:34,155 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 468 flow [2023-11-26 12:01:34,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 12:01:34,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:34,156 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, 1, 1, 1, 1] [2023-11-26 12:01:34,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:01:34,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 12:01:34,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1308563870, now seen corresponding path program 1 times [2023-11-26 12:01:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518234791] [2023-11-26 12:01:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:34,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:34,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518234791] [2023-11-26 12:01:34,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518234791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:34,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967701878] [2023-11-26 12:01:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:34,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:34,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-26 12:01:34,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 12:01:34,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:34,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-26 12:01:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:39,368 INFO L124 PetriNetUnfolderBase]: 16487/39501 cut-off events. [2023-11-26 12:01:39,368 INFO L125 PetriNetUnfolderBase]: For 27632/29807 co-relation queries the response was YES. [2023-11-26 12:01:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88367 conditions, 39501 events. 16487/39501 cut-off events. For 27632/29807 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 461647 event pairs, 9148 based on Foata normal form. 38/33405 useless extension candidates. Maximal degree in co-relation 88256. Up to 18525 conditions per place. [2023-11-26 12:01:39,969 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 51 selfloop transitions, 26 changer transitions 0/185 dead transitions. [2023-11-26 12:01:39,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 185 transitions, 772 flow [2023-11-26 12:01:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-26 12:01:39,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8364779874213837 [2023-11-26 12:01:39,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-26 12:01:39,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-26 12:01:39,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-26 12:01:39,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 12:01:39,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:39,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:39,977 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 468 flow. Second operand 3 states and 399 transitions. [2023-11-26 12:01:39,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 185 transitions, 772 flow [2023-11-26 12:01:40,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 185 transitions, 704 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:40,282 INFO L231 Difference]: Finished difference. Result has 149 places, 177 transitions, 676 flow [2023-11-26 12:01:40,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=149, PETRI_TRANSITIONS=177} [2023-11-26 12:01:40,283 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -10 predicate places. [2023-11-26 12:01:40,283 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 177 transitions, 676 flow [2023-11-26 12:01:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 12:01:40,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:40,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:01:40,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 12:01:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 806903118, now seen corresponding path program 1 times [2023-11-26 12:01:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742830385] [2023-11-26 12:01:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,326 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 12:01:40,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:40,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742830385] [2023-11-26 12:01:40,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742830385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:40,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:40,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903468217] [2023-11-26 12:01:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:40,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 159 [2023-11-26 12:01:40,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 177 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 12:01:40,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:40,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 159 [2023-11-26 12:01:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:53,258 INFO L124 PetriNetUnfolderBase]: 42024/99748 cut-off events. [2023-11-26 12:01:53,258 INFO L125 PetriNetUnfolderBase]: For 128369/133202 co-relation queries the response was YES. [2023-11-26 12:01:53,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248432 conditions, 99748 events. 42024/99748 cut-off events. For 128369/133202 co-relation queries the response was YES. Maximal size of possible extension queue 3455. Compared 1297409 event pairs, 10303 based on Foata normal form. 123/82922 useless extension candidates. Maximal degree in co-relation 248303. Up to 27414 conditions per place. [2023-11-26 12:01:54,324 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 82 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2023-11-26 12:01:54,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 243 transitions, 1363 flow [2023-11-26 12:01:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-26 12:01:54,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2023-11-26 12:01:54,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-26 12:01:54,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-26 12:01:54,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:54,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-26 12:01:54,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 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 12:01:54,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:54,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:01:54,331 INFO L175 Difference]: Start difference. First operand has 149 places, 177 transitions, 676 flow. Second operand 3 states and 402 transitions. [2023-11-26 12:01:54,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 243 transitions, 1363 flow [2023-11-26 12:01:55,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 243 transitions, 1263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:55,219 INFO L231 Difference]: Finished difference. Result has 151 places, 232 transitions, 1290 flow [2023-11-26 12:01:55,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1290, PETRI_PLACES=151, PETRI_TRANSITIONS=232} [2023-11-26 12:01:55,221 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -8 predicate places. [2023-11-26 12:01:55,221 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 232 transitions, 1290 flow [2023-11-26 12:01:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 12:01:55,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:55,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:55,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:01:55,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 12:01:55,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1978372605, now seen corresponding path program 1 times [2023-11-26 12:01:55,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:55,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744294478] [2023-11-26 12:01:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:55,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744294478] [2023-11-26 12:01:55,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744294478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:55,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:55,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:55,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920895421] [2023-11-26 12:01:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:55,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:55,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:55,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:55,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-26 12:01:55,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 232 transitions, 1290 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 12:01:55,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:55,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-26 12:01:55,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand