./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bdf6537ef41e6e97eaabcf1f32a2477c3eb925663d5b8e717e1252d54a113bc0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:06,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:06,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:25:06,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:06,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:06,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:06,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:06,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:06,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:25:06,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:25:06,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:06,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:06,253 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:06,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:06,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:25:06,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:06,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:06,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:06,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:06,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:25:06,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:25:06,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:25:06,259 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:25:06,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:25:06,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:06,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:25:06,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:06,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:06,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:06,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:25:06,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:06,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:06,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:25:06,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:25:06,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:25:06,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:25:06,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:25:06,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:25:06,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:25:06,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:25:06,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:25:06,269 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_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdf6537ef41e6e97eaabcf1f32a2477c3eb925663d5b8e717e1252d54a113bc0 [2023-11-21 22:25:06,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:06,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:06,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:06,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:06,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:06,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i [2023-11-21 22:25:09,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:10,169 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:10,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i [2023-11-21 22:25:10,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/data/7f38fa51a/03885550dc824ea9a6a190c561895ec7/FLAGd94721b1d [2023-11-21 22:25:10,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/data/7f38fa51a/03885550dc824ea9a6a190c561895ec7 [2023-11-21 22:25:10,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:10,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:10,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:10,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:10,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:10,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:10,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1ce6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10, skipping insertion in model container [2023-11-21 22:25:10,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:10,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:10,457 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:25:10,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:10,833 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:10,846 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:25:10,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:10,964 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:10,971 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:10,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10 WrapperNode [2023-11-21 22:25:10,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:10,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:10,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:10,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:10,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,027 INFO L138 Inliner]: procedures = 266, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-11-21 22:25:11,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:11,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:11,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:11,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:11,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:11,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:11,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:11,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:11,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2023-11-21 22:25:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:11,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:11,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:25:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:25:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:25:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:11,168 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:25:11,314 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:11,316 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:11,565 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:11,577 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:11,577 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:25:11,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:11 BoogieIcfgContainer [2023-11-21 22:25:11,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:11,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:11,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:11,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:11,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:10" (1/3) ... [2023-11-21 22:25:11,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0d5c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:11, skipping insertion in model container [2023-11-21 22:25:11,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (2/3) ... [2023-11-21 22:25:11,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0d5c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:11, skipping insertion in model container [2023-11-21 22:25:11,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:11" (3/3) ... [2023-11-21 22:25:11,591 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-race.i [2023-11-21 22:25:11,614 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:25:11,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:11,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 22:25:11,629 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:11,703 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:25:11,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 213 flow [2023-11-21 22:25:11,828 INFO L124 PetriNetUnfolderBase]: 6/152 cut-off events. [2023-11-21 22:25:11,829 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:25:11,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 152 events. 6/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-21 22:25:11,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 213 flow [2023-11-21 22:25:11,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 213 flow [2023-11-21 22:25:11,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:11,868 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18ac641d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:11,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:25:11,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:11,887 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:25:11,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:11,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:11,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:11,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-21 22:25:11,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1764504615, now seen corresponding path program 1 times [2023-11-21 22:25:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:11,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128829730] [2023-11-21 22:25:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:11,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:12,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:12,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128829730] [2023-11-21 22:25:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128829730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:12,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933264696] [2023-11-21 22:25:12,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:13,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 103 [2023-11-21 22:25:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-11-21 22:25:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:13,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 103 [2023-11-21 22:25:13,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:13,657 INFO L124 PetriNetUnfolderBase]: 117/574 cut-off events. [2023-11-21 22:25:13,658 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:25:13,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 574 events. 117/574 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3190 event pairs, 6 based on Foata normal form. 13/537 useless extension candidates. Maximal degree in co-relation 751. Up to 194 conditions per place. [2023-11-21 22:25:13,666 INFO L140 encePairwiseOnDemand]: 77/103 looper letters, 38 selfloop transitions, 29 changer transitions 1/139 dead transitions. [2023-11-21 22:25:13,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 422 flow [2023-11-21 22:25:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2023-11-21 22:25:13,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8203883495145631 [2023-11-21 22:25:13,686 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2023-11-21 22:25:13,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2023-11-21 22:25:13,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:13,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2023-11-21 22:25:13,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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) [2023-11-21 22:25:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:13,707 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:13,710 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 213 flow. Second operand 6 states and 507 transitions. [2023-11-21 22:25:13,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 422 flow [2023-11-21 22:25:13,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 139 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:13,739 INFO L231 Difference]: Finished difference. Result has 112 places, 128 transitions, 425 flow [2023-11-21 22:25:13,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=425, PETRI_PLACES=112, PETRI_TRANSITIONS=128} [2023-11-21 22:25:13,745 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2023-11-21 22:25:13,746 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 128 transitions, 425 flow [2023-11-21 22:25:13,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-11-21 22:25:13,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:13,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:13,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:25:13,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-21 22:25:13,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash -75319162, now seen corresponding path program 1 times [2023-11-21 22:25:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:13,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175212381] [2023-11-21 22:25:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:13,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:13,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:13,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175212381] [2023-11-21 22:25:13,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175212381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:13,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848370531] [2023-11-21 22:25:13,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:13,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:13,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 103 [2023-11-21 22:25:13,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 128 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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) [2023-11-21 22:25:13,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:13,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 103 [2023-11-21 22:25:13,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:14,081 INFO L124 PetriNetUnfolderBase]: 82/524 cut-off events. [2023-11-21 22:25:14,081 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-21 22:25:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 524 events. 82/524 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2925 event pairs, 3 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 765. Up to 98 conditions per place. [2023-11-21 22:25:14,091 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 11 selfloop transitions, 2 changer transitions 5/133 dead transitions. [2023-11-21 22:25:14,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 133 transitions, 471 flow [2023-11-21 22:25:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-11-21 22:25:14,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8754045307443366 [2023-11-21 22:25:14,096 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-11-21 22:25:14,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-11-21 22:25:14,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:14,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-11-21 22:25:14,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:14,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:14,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:14,102 INFO L175 Difference]: Start difference. First operand has 112 places, 128 transitions, 425 flow. Second operand 6 states and 541 transitions. [2023-11-21 22:25:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 133 transitions, 471 flow [2023-11-21 22:25:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:14,119 INFO L231 Difference]: Finished difference. Result has 120 places, 128 transitions, 443 flow [2023-11-21 22:25:14,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=120, PETRI_TRANSITIONS=128} [2023-11-21 22:25:14,120 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 18 predicate places. [2023-11-21 22:25:14,120 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 128 transitions, 443 flow [2023-11-21 22:25:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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) [2023-11-21 22:25:14,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:14,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:14,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:25:14,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-21 22:25:14,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -141094382, now seen corresponding path program 1 times [2023-11-21 22:25:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771439654] [2023-11-21 22:25:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771439654] [2023-11-21 22:25:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771439654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015766739] [2023-11-21 22:25:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:14,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2023-11-21 22:25:14,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 128 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-11-21 22:25:14,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:14,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2023-11-21 22:25:14,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:15,237 INFO L124 PetriNetUnfolderBase]: 337/1184 cut-off events. [2023-11-21 22:25:15,237 INFO L125 PetriNetUnfolderBase]: For 430/514 co-relation queries the response was YES. [2023-11-21 22:25:15,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 1184 events. 337/1184 cut-off events. For 430/514 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8161 event pairs, 62 based on Foata normal form. 14/1132 useless extension candidates. Maximal degree in co-relation 2682. Up to 596 conditions per place. [2023-11-21 22:25:15,249 INFO L140 encePairwiseOnDemand]: 80/103 looper letters, 49 selfloop transitions, 82 changer transitions 2/209 dead transitions. [2023-11-21 22:25:15,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 209 transitions, 1045 flow [2023-11-21 22:25:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2023-11-21 22:25:15,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8656957928802589 [2023-11-21 22:25:15,252 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 535 transitions. [2023-11-21 22:25:15,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 535 transitions. [2023-11-21 22:25:15,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:15,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 535 transitions. [2023-11-21 22:25:15,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 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) [2023-11-21 22:25:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-11-21 22:25:15,258 INFO L175 Difference]: Start difference. First operand has 120 places, 128 transitions, 443 flow. Second operand 6 states and 535 transitions. [2023-11-21 22:25:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 209 transitions, 1045 flow [2023-11-21 22:25:15,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 209 transitions, 1031 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-21 22:25:15,276 INFO L231 Difference]: Finished difference. Result has 122 places, 207 transitions, 1149 flow [2023-11-21 22:25:15,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1149, PETRI_PLACES=122, PETRI_TRANSITIONS=207} [2023-11-21 22:25:15,278 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 20 predicate places. [2023-11-21 22:25:15,278 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 207 transitions, 1149 flow [2023-11-21 22:25:15,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-11-21 22:25:15,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:15,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:15,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:25:15,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-21 22:25:15,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 941060820, now seen corresponding path program 1 times [2023-11-21 22:25:15,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:15,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034727749] [2023-11-21 22:25:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:15,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:15,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:15,392 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:25:15,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-21 22:25:15,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-21 22:25:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-21 22:25:15,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-21 22:25:15,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-21 22:25:15,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-21 22:25:15,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-21 22:25:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:25:15,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:25:15,408 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:25:15,408 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:25:15,448 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:25:15,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 258 flow [2023-11-21 22:25:15,495 INFO L124 PetriNetUnfolderBase]: 11/271 cut-off events. [2023-11-21 22:25:15,496 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:25:15,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 271 events. 11/271 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 651 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-11-21 22:25:15,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 258 flow [2023-11-21 22:25:15,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 121 transitions, 258 flow [2023-11-21 22:25:15,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:15,502 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18ac641d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:15,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 22:25:15,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:15,508 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:25:15,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:15,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:15,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:15,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:15,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 435998066, now seen corresponding path program 1 times [2023-11-21 22:25:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:15,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552547170] [2023-11-21 22:25:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552547170] [2023-11-21 22:25:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552547170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717135404] [2023-11-21 22:25:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:15,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:15,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:16,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2023-11-21 22:25:16,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2023-11-21 22:25:16,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:16,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2023-11-21 22:25:16,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:17,039 INFO L124 PetriNetUnfolderBase]: 1710/4914 cut-off events. [2023-11-21 22:25:17,040 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-21 22:25:17,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7978 conditions, 4914 events. 1710/4914 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 40598 event pairs, 258 based on Foata normal form. 85/4617 useless extension candidates. Maximal degree in co-relation 4669. Up to 2239 conditions per place. [2023-11-21 22:25:17,080 INFO L140 encePairwiseOnDemand]: 91/121 looper letters, 46 selfloop transitions, 48 changer transitions 1/178 dead transitions. [2023-11-21 22:25:17,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 178 transitions, 571 flow [2023-11-21 22:25:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-11-21 22:25:17,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8347107438016529 [2023-11-21 22:25:17,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-11-21 22:25:17,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-11-21 22:25:17,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:17,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-11-21 22:25:17,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2023-11-21 22:25:17,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:17,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:17,090 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 258 flow. Second operand 6 states and 606 transitions. [2023-11-21 22:25:17,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 178 transitions, 571 flow [2023-11-21 22:25:17,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:17,095 INFO L231 Difference]: Finished difference. Result has 131 places, 165 transitions, 592 flow [2023-11-21 22:25:17,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=131, PETRI_TRANSITIONS=165} [2023-11-21 22:25:17,097 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 10 predicate places. [2023-11-21 22:25:17,097 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 165 transitions, 592 flow [2023-11-21 22:25:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2023-11-21 22:25:17,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:17,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:17,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:25:17,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:17,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash 354992102, now seen corresponding path program 1 times [2023-11-21 22:25:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:17,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253621041] [2023-11-21 22:25:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:17,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253621041] [2023-11-21 22:25:17,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253621041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:17,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966349808] [2023-11-21 22:25:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:17,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 121 [2023-11-21 22:25:17,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 165 transitions, 592 flow. Second operand has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-11-21 22:25:17,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:17,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 121 [2023-11-21 22:25:17,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:17,861 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([266] L1036-5-->L1036-6: Formula: (let ((.cse0 (select |v_#race_20| |v_ULTIMATE.start_main_~#tids~0#1.base_17|))) (and (= (select .cse0 (+ |v_ULTIMATE.start_main_~#tids~0#1.offset_17| 1)) 0) (= (select .cse0 |v_ULTIMATE.start_main_~#tids~0#1.offset_17|) 0) (= (select .cse0 (+ |v_ULTIMATE.start_main_~#tids~0#1.offset_17| 3)) 0) (= (select .cse0 (+ |v_ULTIMATE.start_main_~#tids~0#1.offset_17| 2)) 0))) InVars {#race=|v_#race_20|, ULTIMATE.start_main_~#tids~0#1.offset=|v_ULTIMATE.start_main_~#tids~0#1.offset_17|, ULTIMATE.start_main_~#tids~0#1.base=|v_ULTIMATE.start_main_~#tids~0#1.base_17|} OutVars{#race=|v_#race_20|, ULTIMATE.start_main_~#tids~0#1.offset=|v_ULTIMATE.start_main_~#tids~0#1.offset_17|, ULTIMATE.start_main_~#tids~0#1.base=|v_ULTIMATE.start_main_~#tids~0#1.base_17|} AuxVars[] AssignedVars[][108], [136#true, 34#L1024-6true, Black: 124#true, Black: 128#(and (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ |ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |ULTIMATE.start_main_~#tids~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) |ULTIMATE.start_main_~#tids~0#1.offset|) 0)), Black: 127#(and (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ |ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) |ULTIMATE.start_main_~#tids~0#1.offset|) 0)), Black: 126#(= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) |ULTIMATE.start_main_~#tids~0#1.offset|) 0), 12#L1036-6true, threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse, 129#(and (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ |ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |ULTIMATE.start_main_~#tids~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) (+ |ULTIMATE.start_main_~#tids~0#1.offset| 3)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#tids~0#1.base|) |ULTIMATE.start_main_~#tids~0#1.offset|) 0)), 10#L1024-8true]) [2023-11-21 22:25:17,861 INFO L294 olderBase$Statistics]: this new event has 84 ancestors and is not cut-off event [2023-11-21 22:25:17,862 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is not cut-off event [2023-11-21 22:25:17,862 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is not cut-off event [2023-11-21 22:25:17,862 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is not cut-off event [2023-11-21 22:25:18,088 INFO L124 PetriNetUnfolderBase]: 1252/4216 cut-off events. [2023-11-21 22:25:18,089 INFO L125 PetriNetUnfolderBase]: For 863/867 co-relation queries the response was YES. [2023-11-21 22:25:18,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8138 conditions, 4216 events. 1252/4216 cut-off events. For 863/867 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 36616 event pairs, 176 based on Foata normal form. 1/3991 useless extension candidates. Maximal degree in co-relation 4677. Up to 1342 conditions per place. [2023-11-21 22:25:18,129 INFO L140 encePairwiseOnDemand]: 113/121 looper letters, 14 selfloop transitions, 2 changer transitions 5/171 dead transitions. [2023-11-21 22:25:18,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 171 transitions, 646 flow [2023-11-21 22:25:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 640 transitions. [2023-11-21 22:25:18,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8815426997245179 [2023-11-21 22:25:18,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 640 transitions. [2023-11-21 22:25:18,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 640 transitions. [2023-11-21 22:25:18,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:18,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 640 transitions. [2023-11-21 22:25:18,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.66666666666667) internal successors, (640), 6 states have internal predecessors, (640), 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) [2023-11-21 22:25:18,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:18,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:18,139 INFO L175 Difference]: Start difference. First operand has 131 places, 165 transitions, 592 flow. Second operand 6 states and 640 transitions. [2023-11-21 22:25:18,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 171 transitions, 646 flow [2023-11-21 22:25:18,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 171 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:18,158 INFO L231 Difference]: Finished difference. Result has 139 places, 166 transitions, 614 flow [2023-11-21 22:25:18,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=139, PETRI_TRANSITIONS=166} [2023-11-21 22:25:18,162 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 18 predicate places. [2023-11-21 22:25:18,162 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 166 transitions, 614 flow [2023-11-21 22:25:18,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-11-21 22:25:18,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:18,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:18,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:25:18,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:18,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 791198914, now seen corresponding path program 1 times [2023-11-21 22:25:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009709114] [2023-11-21 22:25:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:18,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:18,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009709114] [2023-11-21 22:25:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009709114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:18,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:18,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:18,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708440377] [2023-11-21 22:25:18,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:18,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:18,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:18,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:18,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 121 [2023-11-21 22:25:18,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 166 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2023-11-21 22:25:18,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:18,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 121 [2023-11-21 22:25:18,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:21,144 INFO L124 PetriNetUnfolderBase]: 4895/11733 cut-off events. [2023-11-21 22:25:21,144 INFO L125 PetriNetUnfolderBase]: For 5295/6921 co-relation queries the response was YES. [2023-11-21 22:25:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28905 conditions, 11733 events. 4895/11733 cut-off events. For 5295/6921 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 105452 event pairs, 1134 based on Foata normal form. 45/11087 useless extension candidates. Maximal degree in co-relation 28834. Up to 6769 conditions per place. [2023-11-21 22:25:21,351 INFO L140 encePairwiseOnDemand]: 94/121 looper letters, 80 selfloop transitions, 142 changer transitions 0/311 dead transitions. [2023-11-21 22:25:21,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 311 transitions, 1722 flow [2023-11-21 22:25:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 637 transitions. [2023-11-21 22:25:21,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8774104683195593 [2023-11-21 22:25:21,355 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 637 transitions. [2023-11-21 22:25:21,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 637 transitions. [2023-11-21 22:25:21,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:21,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 637 transitions. [2023-11-21 22:25:21,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 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) [2023-11-21 22:25:21,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:21,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-21 22:25:21,363 INFO L175 Difference]: Start difference. First operand has 139 places, 166 transitions, 614 flow. Second operand 6 states and 637 transitions. [2023-11-21 22:25:21,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 311 transitions, 1722 flow [2023-11-21 22:25:21,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 311 transitions, 1710 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-21 22:25:21,405 INFO L231 Difference]: Finished difference. Result has 142 places, 303 transitions, 1900 flow [2023-11-21 22:25:21,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1900, PETRI_PLACES=142, PETRI_TRANSITIONS=303} [2023-11-21 22:25:21,408 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 21 predicate places. [2023-11-21 22:25:21,409 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 303 transitions, 1900 flow [2023-11-21 22:25:21,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2023-11-21 22:25:21,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:21,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:25:21,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:21,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1969644416, now seen corresponding path program 1 times [2023-11-21 22:25:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199189440] [2023-11-21 22:25:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199189440] [2023-11-21 22:25:22,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199189440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081788857] [2023-11-21 22:25:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:22,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:22,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:22,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:25:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:25:22,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:22,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:22,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:25:22,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:22,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:25:22,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:22,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:25:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:22,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-21 22:25:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:22,960 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 3)))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset)))) is different from false [2023-11-21 22:25:23,002 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_threadThread1of2ForFork0_~t~0.offset 3))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) c_threadThread1of2ForFork0_~t~0.offset))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) .cse1))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 2)))) (forall ((v_ArrVal_255 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_255) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 1))))))) is different from false [2023-11-21 22:25:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 22:25:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081788857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:27,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2023-11-21 22:25:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142218253] [2023-11-21 22:25:27,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:27,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-21 22:25:27,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-21 22:25:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=638, Unknown=13, NotChecked=106, Total=870 [2023-11-21 22:25:27,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 121 [2023-11-21 22:25:27,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 303 transitions, 1900 flow. Second operand has 30 states, 30 states have (on average 60.2) internal successors, (1806), 30 states have internal predecessors, (1806), 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) [2023-11-21 22:25:27,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 121 [2023-11-21 22:25:27,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:34,730 INFO L124 PetriNetUnfolderBase]: 13429/26306 cut-off events. [2023-11-21 22:25:34,731 INFO L125 PetriNetUnfolderBase]: For 27125/27159 co-relation queries the response was YES. [2023-11-21 22:25:34,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84178 conditions, 26306 events. 13429/26306 cut-off events. For 27125/27159 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 234328 event pairs, 1506 based on Foata normal form. 356/25180 useless extension candidates. Maximal degree in co-relation 71500. Up to 12677 conditions per place. [2023-11-21 22:25:34,974 INFO L140 encePairwiseOnDemand]: 98/121 looper letters, 510 selfloop transitions, 206 changer transitions 1/775 dead transitions. [2023-11-21 22:25:34,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 775 transitions, 6168 flow [2023-11-21 22:25:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:25:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-21 22:25:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1139 transitions. [2023-11-21 22:25:34,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6723730814639906 [2023-11-21 22:25:34,980 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1139 transitions. [2023-11-21 22:25:34,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1139 transitions. [2023-11-21 22:25:34,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:34,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1139 transitions. [2023-11-21 22:25:34,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.35714285714286) internal successors, (1139), 14 states have internal predecessors, (1139), 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) [2023-11-21 22:25:34,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 121.0) internal successors, (1815), 15 states have internal predecessors, (1815), 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) [2023-11-21 22:25:34,991 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 121.0) internal successors, (1815), 15 states have internal predecessors, (1815), 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) [2023-11-21 22:25:34,992 INFO L175 Difference]: Start difference. First operand has 142 places, 303 transitions, 1900 flow. Second operand 14 states and 1139 transitions. [2023-11-21 22:25:34,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 775 transitions, 6168 flow [2023-11-21 22:25:35,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 775 transitions, 6114 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:35,563 INFO L231 Difference]: Finished difference. Result has 164 places, 488 transitions, 4174 flow [2023-11-21 22:25:35,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4174, PETRI_PLACES=164, PETRI_TRANSITIONS=488} [2023-11-21 22:25:35,565 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 43 predicate places. [2023-11-21 22:25:35,565 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 488 transitions, 4174 flow [2023-11-21 22:25:35,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 60.2) internal successors, (1806), 30 states have internal predecessors, (1806), 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) [2023-11-21 22:25:35,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:35,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:35,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:25:35,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:35,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:35,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1161061333, now seen corresponding path program 1 times [2023-11-21 22:25:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029399407] [2023-11-21 22:25:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:36,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029399407] [2023-11-21 22:25:36,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029399407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781725241] [2023-11-21 22:25:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:36,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:36,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:36,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:36,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:25:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:36,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:25:36,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:36,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:36,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:25:36,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:36,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:25:36,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:36,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:25:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:37,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-21 22:25:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:37,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:37,224 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (forall ((v_ArrVal_333 (Array Int Int))) (= 0 (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|)))) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0))) is different from false [2023-11-21 22:25:39,583 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21)))))) is different from false [2023-11-21 22:25:39,635 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) (.cse2 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2) 0)) (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21))) (forall ((v_threadThread1of2ForFork0_~t~0.base_21 Int)) (or (< c_threadThread1of2ForFork0_~arg.base v_threadThread1of2ForFork0_~t~0.base_21) (forall ((v_ArrVal_333 (Array Int Int))) (= 0 (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_21 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1))))))))) is different from false [2023-11-21 22:25:43,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:43,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 49 [2023-11-21 22:25:43,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:25:43,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 34 [2023-11-21 22:25:43,901 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:25:43,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-21 22:25:43,914 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:25:43,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-21 22:25:43,922 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:25:43,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-21 22:25:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-21 22:25:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781725241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:44,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:44,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-11-21 22:25:44,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453323428] [2023-11-21 22:25:44,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:44,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:25:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:25:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=12, NotChecked=168, Total=992 [2023-11-21 22:25:44,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 121 [2023-11-21 22:25:44,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 488 transitions, 4174 flow. Second operand has 32 states, 32 states have (on average 62.0625) internal successors, (1986), 32 states have internal predecessors, (1986), 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) [2023-11-21 22:25:44,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:44,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 121 [2023-11-21 22:25:44,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:52,288 INFO L124 PetriNetUnfolderBase]: 15352/30602 cut-off events. [2023-11-21 22:25:52,288 INFO L125 PetriNetUnfolderBase]: For 76543/76657 co-relation queries the response was YES. [2023-11-21 22:25:52,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121533 conditions, 30602 events. 15352/30602 cut-off events. For 76543/76657 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 275080 event pairs, 1161 based on Foata normal form. 213/28965 useless extension candidates. Maximal degree in co-relation 113958. Up to 13032 conditions per place. [2023-11-21 22:25:52,683 INFO L140 encePairwiseOnDemand]: 87/121 looper letters, 554 selfloop transitions, 282 changer transitions 4/904 dead transitions. [2023-11-21 22:25:52,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 904 transitions, 8990 flow [2023-11-21 22:25:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:25:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-21 22:25:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1187 transitions. [2023-11-21 22:25:52,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6539944903581267 [2023-11-21 22:25:52,694 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1187 transitions. [2023-11-21 22:25:52,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1187 transitions. [2023-11-21 22:25:52,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:52,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1187 transitions. [2023-11-21 22:25:52,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 79.13333333333334) internal successors, (1187), 15 states have internal predecessors, (1187), 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) [2023-11-21 22:25:52,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 121.0) internal successors, (1936), 16 states have internal predecessors, (1936), 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) [2023-11-21 22:25:52,711 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 121.0) internal successors, (1936), 16 states have internal predecessors, (1936), 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) [2023-11-21 22:25:52,712 INFO L175 Difference]: Start difference. First operand has 164 places, 488 transitions, 4174 flow. Second operand 15 states and 1187 transitions. [2023-11-21 22:25:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 904 transitions, 8990 flow [2023-11-21 22:25:54,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 904 transitions, 8964 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-21 22:25:54,635 INFO L231 Difference]: Finished difference. Result has 183 places, 643 transitions, 7009 flow [2023-11-21 22:25:54,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7009, PETRI_PLACES=183, PETRI_TRANSITIONS=643} [2023-11-21 22:25:54,636 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 62 predicate places. [2023-11-21 22:25:54,637 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 643 transitions, 7009 flow [2023-11-21 22:25:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 62.0625) internal successors, (1986), 32 states have internal predecessors, (1986), 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) [2023-11-21 22:25:54,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:54,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:54,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:54,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104f111a-520a-47c6-9e7e-e93d1b46a653/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:54,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-21 22:25:54,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash 210800945, now seen corresponding path program 1 times [2023-11-21 22:25:54,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:54,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405138834] [2023-11-21 22:25:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:54,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405138834] [2023-11-21 22:25:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405138834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552666157] [2023-11-21 22:25:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:55,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:55,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-11-21 22:25:55,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 643 transitions, 7009 flow. Second operand has 6 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 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) [2023-11-21 22:25:55,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:55,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-11-21 22:25:55,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand