./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --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_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/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_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/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_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/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 a8c5e3af8ba67928821663a592549ea9172bf8db4560f315dbf6722b49e13ae8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:56,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:57,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:14:57,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:57,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:57,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:57,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:57,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:57,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:57,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:57,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:57,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:57,108 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:57,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:57,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:14:57,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:14:57,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:57,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:14:57,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:57,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:14:57,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:57,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:14:57,115 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:14:57,116 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:14:57,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:14:57,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:14:57,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:57,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:57,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:57,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:57,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:57,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:57,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:57,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:14:57,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:14:57,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:14:57,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:57,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:14:57,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:57,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:57,126 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:57,126 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_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8c5e3af8ba67928821663a592549ea9172bf8db4560f315dbf6722b49e13ae8 [2023-11-06 22:14:57,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:57,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:57,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:57,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:57,468 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:57,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2023-11-06 22:15:00,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:15:00,964 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:15:00,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2023-11-06 22:15:00,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/data/c91a3ed10/8321c98a52d446609642398a440ed556/FLAG486296f04 [2023-11-06 22:15:01,000 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/data/c91a3ed10/8321c98a52d446609642398a440ed556 [2023-11-06 22:15:01,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:15:01,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:15:01,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:01,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:15:01,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:15:01,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73195f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01, skipping insertion in model container [2023-11-06 22:15:01,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:15:01,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:01,584 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:15:01,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:01,707 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:01,707 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:15:01,715 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:15:01,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01 WrapperNode [2023-11-06 22:15:01,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:01,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:01,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:15:01,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:15:01,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,831 INFO L138 Inliner]: procedures = 178, calls = 39, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 225 [2023-11-06 22:15:01,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:01,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:15:01,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:15:01,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:15:01,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:15:01,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:15:01,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:15:01,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:15:01,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (1/1) ... [2023-11-06 22:15:01,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:01,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:01,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291ebae7-93a9-4675-bb4a-bba4a19cb7a7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:15:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:15:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:15:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:15:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:15:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:15:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:15:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:15:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:15:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:15:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:15:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:15:01,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:15:02,000 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 22:15:02,209 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:15:02,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:15:02,702 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:15:02,967 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:15:02,967 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:15:02,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:02 BoogieIcfgContainer [2023-11-06 22:15:02,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:15:02,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:15:02,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:15:02,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:15:02,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:01" (1/3) ... [2023-11-06 22:15:02,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dee5ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:02, skipping insertion in model container [2023-11-06 22:15:02,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:01" (2/3) ... [2023-11-06 22:15:02,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dee5ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:02, skipping insertion in model container [2023-11-06 22:15:02,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:02" (3/3) ... [2023-11-06 22:15:02,980 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2023-11-06 22:15:02,991 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:15:03,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:15:03,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:15:03,005 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:15:03,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:15:03,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,304 INFO L124 PetriNetUnfolderBase]: 17/185 cut-off events. [2023-11-06 22:15:03,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:15:03,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 185 events. 17/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 341 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 158. Up to 4 conditions per place. [2023-11-06 22:15:03,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:15:03,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 352 flow [2023-11-06 22:15:03,438 INFO L124 PetriNetUnfolderBase]: 17/185 cut-off events. [2023-11-06 22:15:03,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:15:03,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 185 events. 17/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 341 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 158. Up to 4 conditions per place. [2023-11-06 22:15:03,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 4060 [2023-11-06 22:15:20,899 INFO L134 LiptonReduction]: Checked pairs total: 4803 [2023-11-06 22:15:20,899 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-11-06 22:15:20,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:15:20,926 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;@53931fd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:15:20,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-06 22:15:20,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:15:20,930 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-06 22:15:20,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:15:20,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:15:20,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:15:20,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:15:20,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 31322374, now seen corresponding path program 1 times [2023-11-06 22:15:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756135357] [2023-11-06 22:15:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:20,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,213 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 22:15:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756135357] [2023-11-06 22:15:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756135357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:21,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:15:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860772947] [2023-11-06 22:15:21,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:21,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:15:21,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:15:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:15:21,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 390 [2023-11-06 22:15:21,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 22:15:21,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:15:21,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 390 [2023-11-06 22:15:21,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:15:21,476 INFO L124 PetriNetUnfolderBase]: 24/51 cut-off events. [2023-11-06 22:15:21,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:15:21,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 51 events. 24/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 12 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 88. Up to 48 conditions per place. [2023-11-06 22:15:21,478 INFO L140 encePairwiseOnDemand]: 371/390 looper letters, 14 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-11-06 22:15:21,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 15 transitions, 62 flow [2023-11-06 22:15:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:15:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:15:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 315 transitions. [2023-11-06 22:15:21,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2023-11-06 22:15:21,516 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 315 transitions. [2023-11-06 22:15:21,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 315 transitions. [2023-11-06 22:15:21,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:15:21,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 315 transitions. [2023-11-06 22:15:21,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:15:21,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 22:15:21,541 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 22:15:21,544 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 72 flow. Second operand 2 states and 315 transitions. [2023-11-06 22:15:21,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 15 transitions, 62 flow [2023-11-06 22:15:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:15:21,550 INFO L231 Difference]: Finished difference. Result has 15 places, 15 transitions, 34 flow [2023-11-06 22:15:21,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=15, PETRI_TRANSITIONS=15} [2023-11-06 22:15:21,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -16 predicate places. [2023-11-06 22:15:21,558 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 15 transitions, 34 flow [2023-11-06 22:15:21,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 22:15:21,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:15:21,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:15:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:15:21,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:15:21,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 36106622, now seen corresponding path program 1 times [2023-11-06 22:15:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:21,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910299033] [2023-11-06 22:15:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:21,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:21,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:15:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:21,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:15:21,697 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:15:21,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-06 22:15:21,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-06 22:15:21,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-06 22:15:21,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-06 22:15:21,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-06 22:15:21,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-06 22:15:21,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-06 22:15:21,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-06 22:15:21,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-06 22:15:21,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-06 22:15:21,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-06 22:15:21,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-06 22:15:21,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-06 22:15:21,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-06 22:15:21,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-06 22:15:21,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-06 22:15:21,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-06 22:15:21,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-06 22:15:21,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-06 22:15:21,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-06 22:15:21,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-06 22:15:21,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-06 22:15:21,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-06 22:15:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-06 22:15:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-06 22:15:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-06 22:15:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-06 22:15:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-06 22:15:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-06 22:15:21,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-06 22:15:21,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-06 22:15:21,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-06 22:15:21,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-06 22:15:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:15:21,731 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:15:21,736 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:15:21,736 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:15:21,850 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:15:21,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,018 INFO L124 PetriNetUnfolderBase]: 33/344 cut-off events. [2023-11-06 22:15:22,018 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:15:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 344 events. 33/344 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 303. Up to 6 conditions per place. [2023-11-06 22:15:22,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:15:22,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 320 transitions, 650 flow [2023-11-06 22:15:22,115 INFO L124 PetriNetUnfolderBase]: 33/344 cut-off events. [2023-11-06 22:15:22,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:15:22,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 344 events. 33/344 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 303. Up to 6 conditions per place. [2023-11-06 22:15:22,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 50460 [2023-11-06 22:16:00,518 INFO L134 LiptonReduction]: Checked pairs total: 137194 [2023-11-06 22:16:00,518 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-11-06 22:16:00,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:16:00,523 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;@53931fd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:16:00,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-06 22:16:00,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:16:00,526 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:16:00,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:16:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:16:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:16:00,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:16:00,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 54753258, now seen corresponding path program 1 times [2023-11-06 22:16:00,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:00,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609801998] [2023-11-06 22:16:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:00,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,566 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 22:16:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609801998] [2023-11-06 22:16:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609801998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:16:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313712108] [2023-11-06 22:16:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:00,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:16:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:16:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:16:00,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 634 [2023-11-06 22:16:00,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 258.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 22:16:00,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:16:00,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 634 [2023-11-06 22:16:00,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:16:01,259 INFO L124 PetriNetUnfolderBase]: 999/2460 cut-off events. [2023-11-06 22:16:01,260 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-06 22:16:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 2460 events. 999/2460 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18654 event pairs, 735 based on Foata normal form. 132/2243 useless extension candidates. Maximal degree in co-relation 1750. Up to 1546 conditions per place. [2023-11-06 22:16:01,284 INFO L140 encePairwiseOnDemand]: 607/634 looper letters, 42 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2023-11-06 22:16:01,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 272 flow [2023-11-06 22:16:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:16:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:16:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 581 transitions. [2023-11-06 22:16:01,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582018927444795 [2023-11-06 22:16:01,290 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 581 transitions. [2023-11-06 22:16:01,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 581 transitions. [2023-11-06 22:16:01,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:16:01,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 581 transitions. [2023-11-06 22:16:01,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 290.5) internal successors, (581), 2 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 22:16:01,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 634.0) internal successors, (1902), 3 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states 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 22:16:01,304 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 634.0) internal successors, (1902), 3 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states 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 22:16:01,304 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 242 flow. Second operand 2 states and 581 transitions. [2023-11-06 22:16:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 272 flow [2023-11-06 22:16:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:16:01,309 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 188 flow [2023-11-06 22:16:01,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-11-06 22:16:01,311 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -22 predicate places. [2023-11-06 22:16:01,311 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 188 flow [2023-11-06 22:16:01,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 258.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 22:16:01,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:16:01,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:16:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:16:01,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:16:01,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1078318029, now seen corresponding path program 1 times [2023-11-06 22:16:01,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:01,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359443622] [2023-11-06 22:16:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:01,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:01,431 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 22:16:01,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359443622] [2023-11-06 22:16:01,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359443622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:01,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:16:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808276006] [2023-11-06 22:16:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:01,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:01,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 634 [2023-11-06 22:16:01,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 22:16:01,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:16:01,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 634 [2023-11-06 22:16:01,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:16:02,524 INFO L124 PetriNetUnfolderBase]: 1572/3518 cut-off events. [2023-11-06 22:16:02,525 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-06 22:16:02,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 3518 events. 1572/3518 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26927 event pairs, 527 based on Foata normal form. 0/3098 useless extension candidates. Maximal degree in co-relation 6039. Up to 1967 conditions per place. [2023-11-06 22:16:02,561 INFO L140 encePairwiseOnDemand]: 626/634 looper letters, 90 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-11-06 22:16:02,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 135 transitions, 477 flow [2023-11-06 22:16:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:16:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2023-11-06 22:16:02,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426919032597266 [2023-11-06 22:16:02,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2023-11-06 22:16:02,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2023-11-06 22:16:02,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:16:02,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2023-11-06 22:16:02,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:02,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states 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 22:16:02,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states 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 22:16:02,581 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 188 flow. Second operand 3 states and 842 transitions. [2023-11-06 22:16:02,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 135 transitions, 477 flow [2023-11-06 22:16:02,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:16:02,592 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 240 flow [2023-11-06 22:16:02,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2023-11-06 22:16:02,596 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -18 predicate places. [2023-11-06 22:16:02,596 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 240 flow [2023-11-06 22:16:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 22:16:02,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:16:02,598 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:16:02,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:16:02,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:16:02,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash 88634111, now seen corresponding path program 1 times [2023-11-06 22:16:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:02,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489073701] [2023-11-06 22:16:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:02,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:02,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:02,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:16:02,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2023-11-06 22:16:02,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2023-11-06 22:16:02,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2023-11-06 22:16:02,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2023-11-06 22:16:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2023-11-06 22:16:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2023-11-06 22:16:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2023-11-06 22:16:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2023-11-06 22:16:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2023-11-06 22:16:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2023-11-06 22:16:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2023-11-06 22:16:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2023-11-06 22:16:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2023-11-06 22:16:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2023-11-06 22:16:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2023-11-06 22:16:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2023-11-06 22:16:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2023-11-06 22:16:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2023-11-06 22:16:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2023-11-06 22:16:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2023-11-06 22:16:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2023-11-06 22:16:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2023-11-06 22:16:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2023-11-06 22:16:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2023-11-06 22:16:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2023-11-06 22:16:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2023-11-06 22:16:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2023-11-06 22:16:02,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2023-11-06 22:16:02,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2023-11-06 22:16:02,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2023-11-06 22:16:02,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2023-11-06 22:16:02,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2023-11-06 22:16:02,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2023-11-06 22:16:02,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2023-11-06 22:16:02,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2023-11-06 22:16:02,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2023-11-06 22:16:02,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2023-11-06 22:16:02,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2023-11-06 22:16:02,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2023-11-06 22:16:02,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2023-11-06 22:16:02,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2023-11-06 22:16:02,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2023-11-06 22:16:02,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2023-11-06 22:16:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2023-11-06 22:16:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2023-11-06 22:16:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2023-11-06 22:16:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2023-11-06 22:16:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2023-11-06 22:16:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2023-11-06 22:16:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:16:02,703 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:16:02,704 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:16:02,704 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:16:02,822 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:16:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,018 INFO L124 PetriNetUnfolderBase]: 49/503 cut-off events. [2023-11-06 22:16:03,018 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:16:03,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 503 events. 49/503 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2141 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 448. Up to 8 conditions per place. [2023-11-06 22:16:03,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,045 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:16:03,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 466 transitions, 950 flow [2023-11-06 22:16:03,195 INFO L124 PetriNetUnfolderBase]: 49/503 cut-off events. [2023-11-06 22:16:03,195 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:16:03,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 503 events. 49/503 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2141 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 448. Up to 8 conditions per place. [2023-11-06 22:16:03,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 139200 [2023-11-06 22:16:32,142 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 119 DAG size of output: 109 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:16:45,057 INFO L134 LiptonReduction]: Checked pairs total: 392455 [2023-11-06 22:16:45,057 INFO L136 LiptonReduction]: Total number of compositions: 451 [2023-11-06 22:16:45,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:16:45,060 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;@53931fd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:16:45,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-06 22:16:45,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:16:45,063 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 22:16:45,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:16:45,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:16:45,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:16:45,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:16:45,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 87618376, now seen corresponding path program 1 times [2023-11-06 22:16:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441743365] [2023-11-06 22:16:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:45,103 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 22:16:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441743365] [2023-11-06 22:16:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441743365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:45,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:45,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:16:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614722829] [2023-11-06 22:16:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:16:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:16:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:16:45,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 917 [2023-11-06 22:16:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 171 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 373.0) internal successors, (746), 2 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 22:16:45,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:16:45,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 917 [2023-11-06 22:16:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:16:54,115 INFO L124 PetriNetUnfolderBase]: 29519/54975 cut-off events. [2023-11-06 22:16:54,115 INFO L125 PetriNetUnfolderBase]: For 1918/1918 co-relation queries the response was YES. [2023-11-06 22:16:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95570 conditions, 54975 events. 29519/54975 cut-off events. For 1918/1918 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 551451 event pairs, 22575 based on Foata normal form. 2894/50827 useless extension candidates. Maximal degree in co-relation 12082. Up to 39382 conditions per place. [2023-11-06 22:16:54,668 INFO L140 encePairwiseOnDemand]: 877/917 looper letters, 64 selfloop transitions, 0 changer transitions 0/131 dead transitions. [2023-11-06 22:16:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 408 flow [2023-11-06 22:16:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:16:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:16:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 846 transitions. [2023-11-06 22:16:54,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612868047982552 [2023-11-06 22:16:54,673 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 846 transitions. [2023-11-06 22:16:54,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 846 transitions. [2023-11-06 22:16:54,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:16:54,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 846 transitions. [2023-11-06 22:16:54,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 423.0) internal successors, (846), 2 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:54,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 917.0) internal successors, (2751), 3 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 22:16:54,687 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 917.0) internal successors, (2751), 3 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 22:16:54,687 INFO L175 Difference]: Start difference. First operand has 160 places, 171 transitions, 360 flow. Second operand 2 states and 846 transitions. [2023-11-06 22:16:54,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 408 flow [2023-11-06 22:16:54,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 131 transitions, 406 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:16:54,701 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 278 flow [2023-11-06 22:16:54,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=917, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=278, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2023-11-06 22:16:54,705 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, -33 predicate places. [2023-11-06 22:16:54,706 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 278 flow [2023-11-06 22:16:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 373.0) internal successors, (746), 2 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 22:16:54,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:16:54,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:16:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:16:54,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:16:54,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1698016981, now seen corresponding path program 1 times [2023-11-06 22:16:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:54,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252640756] [2023-11-06 22:16:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:54,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:54,776 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 22:16:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252640756] [2023-11-06 22:16:54,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252640756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:54,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:16:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357051224] [2023-11-06 22:16:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:54,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:54,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 917 [2023-11-06 22:16:54,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:54,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:16:54,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 917 [2023-11-06 22:16:54,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:17:09,177 INFO L124 PetriNetUnfolderBase]: 61602/107527 cut-off events. [2023-11-06 22:17:09,177 INFO L125 PetriNetUnfolderBase]: For 1603/1603 co-relation queries the response was YES. [2023-11-06 22:17:09,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192049 conditions, 107527 events. 61602/107527 cut-off events. For 1603/1603 co-relation queries the response was YES. Maximal size of possible extension queue 3507. Compared 1081730 event pairs, 23419 based on Foata normal form. 0/95842 useless extension candidates. Maximal degree in co-relation 192043. Up to 59213 conditions per place. [2023-11-06 22:17:10,395 INFO L140 encePairwiseOnDemand]: 905/917 looper letters, 136 selfloop transitions, 9 changer transitions 0/201 dead transitions. [2023-11-06 22:17:10,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 201 transitions, 718 flow [2023-11-06 22:17:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:17:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1225 transitions. [2023-11-06 22:17:10,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44529262086513993 [2023-11-06 22:17:10,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1225 transitions. [2023-11-06 22:17:10,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1225 transitions. [2023-11-06 22:17:10,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:17:10,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1225 transitions. [2023-11-06 22:17:10,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 22:17:10,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 917.0) internal successors, (3668), 4 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states 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 22:17:10,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 917.0) internal successors, (3668), 4 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states 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 22:17:10,435 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 278 flow. Second operand 3 states and 1225 transitions. [2023-11-06 22:17:10,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 201 transitions, 718 flow [2023-11-06 22:17:10,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:17:10,453 INFO L231 Difference]: Finished difference. Result has 131 places, 140 transitions, 356 flow [2023-11-06 22:17:10,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=917, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=131, PETRI_TRANSITIONS=140} [2023-11-06 22:17:10,456 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, -29 predicate places. [2023-11-06 22:17:10,457 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 140 transitions, 356 flow [2023-11-06 22:17:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:10,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:10,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:10,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:17:10,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:17:10,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1421913950, now seen corresponding path program 1 times [2023-11-06 22:17:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903447952] [2023-11-06 22:17:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:11,008 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 22:17:11,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903447952] [2023-11-06 22:17:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903447952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:11,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:17:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117659426] [2023-11-06 22:17:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:17:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:17:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:11,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 917 [2023-11-06 22:17:11,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 140 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 324.8333333333333) internal successors, (1949), 6 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states 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 22:17:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 917 [2023-11-06 22:17:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand