./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:41,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:42,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:17:42,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:42,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:42,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:42,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:42,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:42,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:42,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:42,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:42,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:42,090 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:42,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:42,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:42,092 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:42,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:42,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:42,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:42,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:42,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:42,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:42,097 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:17:42,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:42,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:42,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:42,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:42,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:42,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:42,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:42,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:42,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:42,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:42,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:42,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:42,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:42,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:42,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:42,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:42,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:42,105 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:42,105 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_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2023-11-06 22:17:42,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:42,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:42,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:42,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:42,390 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:42,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 22:17:45,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:45,808 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:45,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 22:17:45,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/data/ff31e470e/a74355dc91ba4bd5b098679a97a8448b/FLAG241f1398c [2023-11-06 22:17:45,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/data/ff31e470e/a74355dc91ba4bd5b098679a97a8448b [2023-11-06 22:17:45,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:45,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:45,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:45,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:45,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:45,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d20979d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45, skipping insertion in model container [2023-11-06 22:17:45,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,879 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:46,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:46,144 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:46,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:46,231 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:46,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46 WrapperNode [2023-11-06 22:17:46,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:46,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:46,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:46,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:46,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,320 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 824 [2023-11-06 22:17:46,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:46,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:46,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:46,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:46,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:46,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:46,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:46,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:46,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (1/1) ... [2023-11-06 22:17:46,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:46,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:46,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03229b4b-1220-405b-ae18-63b240911e38/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:17:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:17:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:17:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:17:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:17:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:17:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:17:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:17:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:17:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:17:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:46,589 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:17:46,789 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:46,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:48,059 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:48,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:48,079 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:17:48,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:48 BoogieIcfgContainer [2023-11-06 22:17:48,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:48,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:48,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:48,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:48,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:45" (1/3) ... [2023-11-06 22:17:48,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e320be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:48, skipping insertion in model container [2023-11-06 22:17:48,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:46" (2/3) ... [2023-11-06 22:17:48,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e320be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:48, skipping insertion in model container [2023-11-06 22:17:48,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:48" (3/3) ... [2023-11-06 22:17:48,092 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-11-06 22:17:48,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:17:48,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:48,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 119 error locations. [2023-11-06 22:17:48,113 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:17:48,347 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:17:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1040 places, 1078 transitions, 2177 flow [2023-11-06 22:17:49,187 INFO L124 PetriNetUnfolderBase]: 48/1075 cut-off events. [2023-11-06 22:17:49,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:17:49,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 1075 events. 48/1075 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2235 event pairs, 0 based on Foata normal form. 0/908 useless extension candidates. Maximal degree in co-relation 850. Up to 2 conditions per place. [2023-11-06 22:17:49,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 1040 places, 1078 transitions, 2177 flow [2023-11-06 22:17:49,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1011 places, 1046 transitions, 2110 flow [2023-11-06 22:17:49,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:17:49,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1011 places, 1046 transitions, 2110 flow [2023-11-06 22:17:49,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1011 places, 1046 transitions, 2110 flow [2023-11-06 22:17:49,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1011 places, 1046 transitions, 2110 flow [2023-11-06 22:17:49,830 INFO L124 PetriNetUnfolderBase]: 45/1046 cut-off events. [2023-11-06 22:17:49,830 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:17:49,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 1046 events. 45/1046 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2198 event pairs, 0 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 850. Up to 2 conditions per place. [2023-11-06 22:17:49,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 160512 [2023-11-06 22:18:19,828 INFO L134 LiptonReduction]: Checked pairs total: 1113791 [2023-11-06 22:18:19,829 INFO L136 LiptonReduction]: Total number of compositions: 1058 [2023-11-06 22:18:19,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:19,853 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=LoopsAndPotentialCycles, 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;@51109659, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:19,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 197 error locations. [2023-11-06 22:18:19,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:19,855 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:18:19,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:19,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:19,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:18:19,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:19,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 3857, now seen corresponding path program 1 times [2023-11-06 22:18:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605016789] [2023-11-06 22:18:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:19,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605016789] [2023-11-06 22:18:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605016789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:18:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829406886] [2023-11-06 22:18:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:20,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1042 out of 2136 [2023-11-06 22:18:20,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 323 transitions, 664 flow. Second operand has 2 states, 2 states have (on average 1042.5) internal successors, (2085), 2 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:20,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1042 of 2136 [2023-11-06 22:18:20,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:26,762 INFO L124 PetriNetUnfolderBase]: 10931/36565 cut-off events. [2023-11-06 22:18:26,762 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2023-11-06 22:18:26,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52044 conditions, 36565 events. 10931/36565 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 462981 event pairs, 8945 based on Foata normal form. 2549/31263 useless extension candidates. Maximal degree in co-relation 48794. Up to 15054 conditions per place. [2023-11-06 22:18:27,249 INFO L140 encePairwiseOnDemand]: 2072/2136 looper letters, 63 selfloop transitions, 0 changer transitions 1/259 dead transitions. [2023-11-06 22:18:27,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 259 transitions, 664 flow [2023-11-06 22:18:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:18:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2212 transitions. [2023-11-06 22:18:27,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177902621722846 [2023-11-06 22:18:27,283 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2212 transitions. [2023-11-06 22:18:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2212 transitions. [2023-11-06 22:18:27,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:27,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2212 transitions. [2023-11-06 22:18:27,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1106.0) internal successors, (2212), 2 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 2136.0) internal successors, (6408), 3 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,426 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 2136.0) internal successors, (6408), 3 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,428 INFO L175 Difference]: Start difference. First operand has 318 places, 323 transitions, 664 flow. Second operand 2 states and 2212 transitions. [2023-11-06 22:18:27,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 259 transitions, 664 flow [2023-11-06 22:18:27,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:18:27,461 INFO L231 Difference]: Finished difference. Result has 252 places, 258 transitions, 521 flow [2023-11-06 22:18:27,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2136, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=521, PETRI_PLACES=252, PETRI_TRANSITIONS=258} [2023-11-06 22:18:27,472 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -66 predicate places. [2023-11-06 22:18:27,473 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 258 transitions, 521 flow [2023-11-06 22:18:27,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1042.5) internal successors, (2085), 2 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:27,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:27,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:27,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:27,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -194058933, now seen corresponding path program 1 times [2023-11-06 22:18:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306500234] [2023-11-06 22:18:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306500234] [2023-11-06 22:18:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306500234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:27,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:27,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457465994] [2023-11-06 22:18:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:27,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:27,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:27,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1029 out of 2136 [2023-11-06 22:18:27,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 258 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 1032.3333333333333) internal successors, (3097), 3 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:27,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1029 of 2136 [2023-11-06 22:18:27,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:34,218 INFO L124 PetriNetUnfolderBase]: 17531/53671 cut-off events. [2023-11-06 22:18:34,218 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-06 22:18:34,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78073 conditions, 53671 events. 17531/53671 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 675446 event pairs, 11085 based on Foata normal form. 0/43450 useless extension candidates. Maximal degree in co-relation 78070. Up to 24134 conditions per place. [2023-11-06 22:18:34,697 INFO L140 encePairwiseOnDemand]: 2130/2136 looper letters, 91 selfloop transitions, 2 changer transitions 0/278 dead transitions. [2023-11-06 22:18:34,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 278 transitions, 749 flow [2023-11-06 22:18:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3184 transitions. [2023-11-06 22:18:34,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968789013732834 [2023-11-06 22:18:34,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3184 transitions. [2023-11-06 22:18:34,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3184 transitions. [2023-11-06 22:18:34,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:34,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3184 transitions. [2023-11-06 22:18:34,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1061.3333333333333) internal successors, (3184), 3 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,751 INFO L175 Difference]: Start difference. First operand has 252 places, 258 transitions, 521 flow. Second operand 3 states and 3184 transitions. [2023-11-06 22:18:34,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 278 transitions, 749 flow [2023-11-06 22:18:34,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 278 transitions, 749 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:34,762 INFO L231 Difference]: Finished difference. Result has 250 places, 256 transitions, 527 flow [2023-11-06 22:18:34,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2136, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=250, PETRI_TRANSITIONS=256} [2023-11-06 22:18:34,766 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -68 predicate places. [2023-11-06 22:18:34,767 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 256 transitions, 527 flow [2023-11-06 22:18:34,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1032.3333333333333) internal successors, (3097), 3 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:34,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:34,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:34,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1806964307, now seen corresponding path program 1 times [2023-11-06 22:18:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:34,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140670652] [2023-11-06 22:18:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140670652] [2023-11-06 22:18:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140670652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260826713] [2023-11-06 22:18:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:34,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:35,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1011 out of 2136 [2023-11-06 22:18:35,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 256 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 1014.3333333333334) internal successors, (3043), 3 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:35,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1011 of 2136 [2023-11-06 22:18:35,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:44,188 INFO L124 PetriNetUnfolderBase]: 26528/77758 cut-off events. [2023-11-06 22:18:44,189 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-06 22:18:44,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114944 conditions, 77758 events. 26528/77758 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 1014665 event pairs, 22925 based on Foata normal form. 0/64990 useless extension candidates. Maximal degree in co-relation 114940. Up to 36870 conditions per place. [2023-11-06 22:18:44,794 INFO L140 encePairwiseOnDemand]: 2129/2136 looper letters, 74 selfloop transitions, 1 changer transitions 0/250 dead transitions. [2023-11-06 22:18:44,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 665 flow [2023-11-06 22:18:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3114 transitions. [2023-11-06 22:18:44,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859550561797753 [2023-11-06 22:18:44,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3114 transitions. [2023-11-06 22:18:44,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3114 transitions. [2023-11-06 22:18:44,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:44,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3114 transitions. [2023-11-06 22:18:44,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1038.0) internal successors, (3114), 3 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:44,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:44,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:44,844 INFO L175 Difference]: Start difference. First operand has 250 places, 256 transitions, 527 flow. Second operand 3 states and 3114 transitions. [2023-11-06 22:18:44,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 665 flow [2023-11-06 22:18:44,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 250 transitions, 665 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:44,850 INFO L231 Difference]: Finished difference. Result has 246 places, 250 transitions, 517 flow [2023-11-06 22:18:44,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2136, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=246, PETRI_TRANSITIONS=250} [2023-11-06 22:18:44,853 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -72 predicate places. [2023-11-06 22:18:44,853 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 250 transitions, 517 flow [2023-11-06 22:18:44,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1014.3333333333334) internal successors, (3043), 3 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:44,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:44,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:44,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:44,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:44,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 243891169, now seen corresponding path program 1 times [2023-11-06 22:18:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346360974] [2023-11-06 22:18:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346360974] [2023-11-06 22:18:44,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346360974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:44,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:44,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495939082] [2023-11-06 22:18:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:44,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:45,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:45,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:45,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1029 out of 2136 [2023-11-06 22:18:45,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 250 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 1033.6666666666667) internal successors, (3101), 3 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:45,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1029 of 2136 [2023-11-06 22:18:45,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:50,328 INFO L124 PetriNetUnfolderBase]: 16625/43840 cut-off events. [2023-11-06 22:18:50,328 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-06 22:18:50,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67054 conditions, 43840 events. 16625/43840 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 510003 event pairs, 4576 based on Foata normal form. 0/36714 useless extension candidates. Maximal degree in co-relation 67049. Up to 22758 conditions per place. [2023-11-06 22:18:50,674 INFO L140 encePairwiseOnDemand]: 2130/2136 looper letters, 86 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2023-11-06 22:18:50,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 265 transitions, 725 flow [2023-11-06 22:18:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3179 transitions. [2023-11-06 22:18:50,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49609862671660426 [2023-11-06 22:18:50,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3179 transitions. [2023-11-06 22:18:50,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3179 transitions. [2023-11-06 22:18:50,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:50,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3179 transitions. [2023-11-06 22:18:50,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1059.6666666666667) internal successors, (3179), 3 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:50,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:50,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:50,716 INFO L175 Difference]: Start difference. First operand has 246 places, 250 transitions, 517 flow. Second operand 3 states and 3179 transitions. [2023-11-06 22:18:50,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 265 transitions, 725 flow [2023-11-06 22:18:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 265 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:50,722 INFO L231 Difference]: Finished difference. Result has 244 places, 248 transitions, 522 flow [2023-11-06 22:18:50,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2136, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=244, PETRI_TRANSITIONS=248} [2023-11-06 22:18:50,723 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -74 predicate places. [2023-11-06 22:18:50,724 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 248 transitions, 522 flow [2023-11-06 22:18:50,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1033.6666666666667) internal successors, (3101), 3 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:50,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:50,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:50,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:18:50,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:50,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1843701565, now seen corresponding path program 1 times [2023-11-06 22:18:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:50,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410784307] [2023-11-06 22:18:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410784307] [2023-11-06 22:18:50,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410784307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:50,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:50,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670592335] [2023-11-06 22:18:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:50,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:50,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1011 out of 2136 [2023-11-06 22:18:50,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 248 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 1015.6666666666666) internal successors, (3047), 3 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:50,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:50,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1011 of 2136 [2023-11-06 22:18:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:58,862 INFO L124 PetriNetUnfolderBase]: 22285/66408 cut-off events. [2023-11-06 22:18:58,862 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-11-06 22:18:59,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98117 conditions, 66408 events. 22285/66408 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 871055 event pairs, 18858 based on Foata normal form. 0/56295 useless extension candidates. Maximal degree in co-relation 98112. Up to 30981 conditions per place. [2023-11-06 22:18:59,389 INFO L140 encePairwiseOnDemand]: 2129/2136 looper letters, 74 selfloop transitions, 1 changer transitions 0/242 dead transitions. [2023-11-06 22:18:59,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 242 transitions, 660 flow [2023-11-06 22:18:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3113 transitions. [2023-11-06 22:18:59,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579900124843944 [2023-11-06 22:18:59,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3113 transitions. [2023-11-06 22:18:59,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3113 transitions. [2023-11-06 22:18:59,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:59,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3113 transitions. [2023-11-06 22:18:59,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1037.6666666666667) internal successors, (3113), 3 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2136.0) internal successors, (8544), 4 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,462 INFO L175 Difference]: Start difference. First operand has 244 places, 248 transitions, 522 flow. Second operand 3 states and 3113 transitions. [2023-11-06 22:18:59,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 242 transitions, 660 flow [2023-11-06 22:18:59,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 242 transitions, 660 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:59,470 INFO L231 Difference]: Finished difference. Result has 240 places, 242 transitions, 512 flow [2023-11-06 22:18:59,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2136, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=240, PETRI_TRANSITIONS=242} [2023-11-06 22:18:59,475 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -78 predicate places. [2023-11-06 22:18:59,475 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 242 transitions, 512 flow [2023-11-06 22:18:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1015.6666666666666) internal successors, (3047), 3 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:59,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:59,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:59,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-11-06 22:18:59,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -473629682, now seen corresponding path program 1 times [2023-11-06 22:18:59,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436946912] [2023-11-06 22:18:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436946912] [2023-11-06 22:18:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436946912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:59,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737524729] [2023-11-06 22:18:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:59,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:59,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1024 out of 2136 [2023-11-06 22:18:59,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 242 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 1028.3333333333333) internal successors, (3085), 3 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:59,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1024 of 2136 [2023-11-06 22:18:59,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand