./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 9bd2c7ff 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_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/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_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:46:06,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:06,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:46:06,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:06,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:06,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:06,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:06,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:06,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:06,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:06,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:06,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:06,405 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:06,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:06,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:06,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:06,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:06,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:06,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:06,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:06,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:06,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:06,410 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:46:06,411 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:06,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:06,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:06,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:06,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:06,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:06,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:06,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:06,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:06,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:06,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:06,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:06,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:06,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:06,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:06,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:06,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:06,418 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:06,418 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_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdf6537ef41e6e97eaabcf1f32a2477c3eb925663d5b8e717e1252d54a113bc0 [2023-11-19 07:46:06,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:06,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:06,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:06,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:06,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:06,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i [2023-11-19 07:46:09,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:10,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:10,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-race.i [2023-11-19 07:46:10,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/data/3a4344733/b9c23ecc4bb1481c9fac261d67a9d4bd/FLAG5e887e4b0 [2023-11-19 07:46:10,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/data/3a4344733/b9c23ecc4bb1481c9fac261d67a9d4bd [2023-11-19 07:46:10,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:10,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:10,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:10,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:10,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:10,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7e0607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10, skipping insertion in model container [2023-11-19 07:46:10,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:10,473 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:46:10,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:10,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:10,816 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:46:10,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:10,921 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:10,928 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:10,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10 WrapperNode [2023-11-19 07:46:10,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:10,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:10,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:10,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:10,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,990 INFO L138 Inliner]: procedures = 266, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-11-19 07:46:10,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:10,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:10,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:10,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:11,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:11,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:11,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:11,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:11,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:11,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:11,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:11,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:46:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:46:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:46:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:46:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:46:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:46:11,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:46:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:11,192 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:46:11,409 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:11,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:11,732 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:11,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:11,741 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:46:11,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:11 BoogieIcfgContainer [2023-11-19 07:46:11,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:11,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:11,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:11,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:11,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:10" (1/3) ... [2023-11-19 07:46:11,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b376c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:11, skipping insertion in model container [2023-11-19 07:46:11,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (2/3) ... [2023-11-19 07:46:11,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b376c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:11, skipping insertion in model container [2023-11-19 07:46:11,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:11" (3/3) ... [2023-11-19 07:46:11,762 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-race.i [2023-11-19 07:46:11,772 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:46:11,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:11,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-19 07:46:11,786 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:11,858 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:46:11,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:11,988 INFO L124 PetriNetUnfolderBase]: 6/152 cut-off events. [2023-11-19 07:46:11,989 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:11,994 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. [2023-11-19 07:46:11,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:12,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:12,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:12,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:12,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:12,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 213 flow [2023-11-19 07:46:12,061 INFO L124 PetriNetUnfolderBase]: 6/152 cut-off events. [2023-11-19 07:46:12,062 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:12,062 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. [2023-11-19 07:46:12,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-11-19 07:46:14,968 INFO L134 LiptonReduction]: Checked pairs total: 7534 [2023-11-19 07:46:14,968 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-19 07:46:14,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:14,993 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;@206ed76f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:14,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:46:15,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:15,001 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-19 07:46:15,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:15,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:15,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:15,003 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)] === [2023-11-19 07:46:15,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1084151436, now seen corresponding path program 1 times [2023-11-19 07:46:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034184778] [2023-11-19 07:46:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:15,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034184778] [2023-11-19 07:46:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034184778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:15,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:15,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397687203] [2023-11-19 07:46:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:15,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:15,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:16,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-11-19 07:46:16,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 93 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) [2023-11-19 07:46:16,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:16,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-11-19 07:46:16,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:16,546 INFO L124 PetriNetUnfolderBase]: 181/536 cut-off events. [2023-11-19 07:46:16,546 INFO L125 PetriNetUnfolderBase]: For 9/11 co-relation queries the response was YES. [2023-11-19 07:46:16,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 536 events. 181/536 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2882 event pairs, 42 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 895. Up to 266 conditions per place. [2023-11-19 07:46:16,561 INFO L140 encePairwiseOnDemand]: 151/173 looper letters, 54 selfloop transitions, 28 changer transitions 0/92 dead transitions. [2023-11-19 07:46:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 358 flow [2023-11-19 07:46:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2023-11-19 07:46:16,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980732177263969 [2023-11-19 07:46:16,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 517 transitions. [2023-11-19 07:46:16,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 517 transitions. [2023-11-19 07:46:16,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:16,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 517 transitions. [2023-11-19 07:46:16,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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) [2023-11-19 07:46:16,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:16,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:16,611 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 93 flow. Second operand 6 states and 517 transitions. [2023-11-19 07:46:16,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 358 flow [2023-11-19 07:46:16,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:16,620 INFO L231 Difference]: Finished difference. Result has 55 places, 71 transitions, 305 flow [2023-11-19 07:46:16,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=55, PETRI_TRANSITIONS=71} [2023-11-19 07:46:16,626 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2023-11-19 07:46:16,626 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 71 transitions, 305 flow [2023-11-19 07:46:16,626 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) [2023-11-19 07:46:16,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:16,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:16,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:16,627 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)] === [2023-11-19 07:46:16,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1920761363, now seen corresponding path program 1 times [2023-11-19 07:46:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367948227] [2023-11-19 07:46:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:16,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367948227] [2023-11-19 07:46:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367948227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:16,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837106513] [2023-11-19 07:46:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:16,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:17,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 173 [2023-11-19 07:46:17,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 71 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 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) [2023-11-19 07:46:17,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:17,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 173 [2023-11-19 07:46:17,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:17,527 INFO L124 PetriNetUnfolderBase]: 182/544 cut-off events. [2023-11-19 07:46:17,527 INFO L125 PetriNetUnfolderBase]: For 242/250 co-relation queries the response was YES. [2023-11-19 07:46:17,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 544 events. 182/544 cut-off events. For 242/250 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2868 event pairs, 36 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 1263. Up to 276 conditions per place. [2023-11-19 07:46:17,532 INFO L140 encePairwiseOnDemand]: 162/173 looper letters, 37 selfloop transitions, 33 changer transitions 8/113 dead transitions. [2023-11-19 07:46:17,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 113 transitions, 636 flow [2023-11-19 07:46:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2023-11-19 07:46:17,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192678227360308 [2023-11-19 07:46:17,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2023-11-19 07:46:17,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2023-11-19 07:46:17,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:17,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2023-11-19 07:46:17,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2023-11-19 07:46:17,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:17,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:17,545 INFO L175 Difference]: Start difference. First operand has 55 places, 71 transitions, 305 flow. Second operand 6 states and 539 transitions. [2023-11-19 07:46:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 113 transitions, 636 flow [2023-11-19 07:46:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:17,554 INFO L231 Difference]: Finished difference. Result has 65 places, 101 transitions, 606 flow [2023-11-19 07:46:17,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=65, PETRI_TRANSITIONS=101} [2023-11-19 07:46:17,555 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2023-11-19 07:46:17,555 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 101 transitions, 606 flow [2023-11-19 07:46:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 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) [2023-11-19 07:46:17,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:17,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:17,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:46:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash -407347437, now seen corresponding path program 1 times [2023-11-19 07:46:17,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923480616] [2023-11-19 07:46:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923480616] [2023-11-19 07:46:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923480616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451303606] [2023-11-19 07:46:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:17,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:17,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:18,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-11-19 07:46:18,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 101 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2023-11-19 07:46:18,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:18,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-11-19 07:46:18,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:18,438 INFO L124 PetriNetUnfolderBase]: 316/822 cut-off events. [2023-11-19 07:46:18,439 INFO L125 PetriNetUnfolderBase]: For 635/643 co-relation queries the response was YES. [2023-11-19 07:46:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 822 events. 316/822 cut-off events. For 635/643 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4770 event pairs, 49 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 2572. Up to 579 conditions per place. [2023-11-19 07:46:18,448 INFO L140 encePairwiseOnDemand]: 151/173 looper letters, 100 selfloop transitions, 76 changer transitions 10/199 dead transitions. [2023-11-19 07:46:18,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 199 transitions, 1390 flow [2023-11-19 07:46:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2023-11-19 07:46:18,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414258188824663 [2023-11-19 07:46:18,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2023-11-19 07:46:18,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2023-11-19 07:46:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:18,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2023-11-19 07:46:18,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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) [2023-11-19 07:46:18,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:18,461 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-11-19 07:46:18,461 INFO L175 Difference]: Start difference. First operand has 65 places, 101 transitions, 606 flow. Second operand 6 states and 562 transitions. [2023-11-19 07:46:18,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 199 transitions, 1390 flow [2023-11-19 07:46:18,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 199 transitions, 1390 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:18,477 INFO L231 Difference]: Finished difference. Result has 73 places, 169 transitions, 1206 flow [2023-11-19 07:46:18,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1206, PETRI_PLACES=73, PETRI_TRANSITIONS=169} [2023-11-19 07:46:18,479 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-11-19 07:46:18,479 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 169 transitions, 1206 flow [2023-11-19 07:46:18,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2023-11-19 07:46:18,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:18,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:46:18,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:46:18,485 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)] === [2023-11-19 07:46:18,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -495803365, now seen corresponding path program 1 times [2023-11-19 07:46:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344406583] [2023-11-19 07:46:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:18,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:18,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:18,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:46:18,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-19 07:46:18,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-19 07:46:18,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-19 07:46:18,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-19 07:46:18,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-19 07:46:18,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-19 07:46:18,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-19 07:46:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:46:18,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:46:18,609 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:46:18,609 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:46:18,647 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:46:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,705 INFO L124 PetriNetUnfolderBase]: 11/271 cut-off events. [2023-11-19 07:46:18,705 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:18,706 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. [2023-11-19 07:46:18,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:18,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 258 flow [2023-11-19 07:46:18,750 INFO L124 PetriNetUnfolderBase]: 11/271 cut-off events. [2023-11-19 07:46:18,751 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:18,752 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. [2023-11-19 07:46:18,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 4512 [2023-11-19 07:46:21,270 INFO L134 LiptonReduction]: Checked pairs total: 18839 [2023-11-19 07:46:21,270 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-19 07:46:21,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:21,273 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;@206ed76f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:21,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:46:21,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:21,277 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-19 07:46:21,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:21,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:21,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:21,278 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)] === [2023-11-19 07:46:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1615737875, now seen corresponding path program 1 times [2023-11-19 07:46:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:21,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243412122] [2023-11-19 07:46:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:21,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:21,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243412122] [2023-11-19 07:46:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243412122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:21,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:21,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374934871] [2023-11-19 07:46:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:21,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:21,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:21,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 192 [2023-11-19 07:46:21,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 124 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) [2023-11-19 07:46:21,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 192 [2023-11-19 07:46:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:22,932 INFO L124 PetriNetUnfolderBase]: 3686/6983 cut-off events. [2023-11-19 07:46:22,933 INFO L125 PetriNetUnfolderBase]: For 177/212 co-relation queries the response was YES. [2023-11-19 07:46:22,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13250 conditions, 6983 events. 3686/6983 cut-off events. For 177/212 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 47175 event pairs, 884 based on Foata normal form. 12/6617 useless extension candidates. Maximal degree in co-relation 6457. Up to 4233 conditions per place. [2023-11-19 07:46:22,990 INFO L140 encePairwiseOnDemand]: 166/192 looper letters, 75 selfloop transitions, 47 changer transitions 0/135 dead transitions. [2023-11-19 07:46:22,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 135 transitions, 541 flow [2023-11-19 07:46:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-11-19 07:46:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460069444444444 [2023-11-19 07:46:22,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-11-19 07:46:22,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-11-19 07:46:22,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:22,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-11-19 07:46:22,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2023-11-19 07:46:23,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:23,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:23,004 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 124 flow. Second operand 6 states and 629 transitions. [2023-11-19 07:46:23,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 135 transitions, 541 flow [2023-11-19 07:46:23,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 135 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:23,012 INFO L231 Difference]: Finished difference. Result has 67 places, 101 transitions, 458 flow [2023-11-19 07:46:23,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=67, PETRI_TRANSITIONS=101} [2023-11-19 07:46:23,014 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-19 07:46:23,015 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 101 transitions, 458 flow [2023-11-19 07:46:23,015 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) [2023-11-19 07:46:23,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:23,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:23,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:23,016 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)] === [2023-11-19 07:46:23,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash -699659968, now seen corresponding path program 1 times [2023-11-19 07:46:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911092762] [2023-11-19 07:46:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:23,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:23,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:23,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911092762] [2023-11-19 07:46:23,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911092762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:23,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436844205] [2023-11-19 07:46:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:23,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:23,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 192 [2023-11-19 07:46:23,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 101 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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) [2023-11-19 07:46:23,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:23,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 192 [2023-11-19 07:46:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:24,977 INFO L124 PetriNetUnfolderBase]: 3875/7372 cut-off events. [2023-11-19 07:46:24,977 INFO L125 PetriNetUnfolderBase]: For 4552/4677 co-relation queries the response was YES. [2023-11-19 07:46:25,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19666 conditions, 7372 events. 3875/7372 cut-off events. For 4552/4677 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 50238 event pairs, 1160 based on Foata normal form. 0/6970 useless extension candidates. Maximal degree in co-relation 10705. Up to 4740 conditions per place. [2023-11-19 07:46:25,066 INFO L140 encePairwiseOnDemand]: 177/192 looper letters, 81 selfloop transitions, 70 changer transitions 0/188 dead transitions. [2023-11-19 07:46:25,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 188 transitions, 1132 flow [2023-11-19 07:46:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 645 transitions. [2023-11-19 07:46:25,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2023-11-19 07:46:25,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 645 transitions. [2023-11-19 07:46:25,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 645 transitions. [2023-11-19 07:46:25,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:25,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 645 transitions. [2023-11-19 07:46:25,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 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) [2023-11-19 07:46:25,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:25,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:25,077 INFO L175 Difference]: Start difference. First operand has 67 places, 101 transitions, 458 flow. Second operand 6 states and 645 transitions. [2023-11-19 07:46:25,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 188 transitions, 1132 flow [2023-11-19 07:46:25,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 188 transitions, 1132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:25,093 INFO L231 Difference]: Finished difference. Result has 77 places, 170 transitions, 1112 flow [2023-11-19 07:46:25,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1112, PETRI_PLACES=77, PETRI_TRANSITIONS=170} [2023-11-19 07:46:25,097 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2023-11-19 07:46:25,097 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 170 transitions, 1112 flow [2023-11-19 07:46:25,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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) [2023-11-19 07:46:25,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:25,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:25,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:25,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:46:25,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1719687841, now seen corresponding path program 1 times [2023-11-19 07:46:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177669174] [2023-11-19 07:46:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:25,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177669174] [2023-11-19 07:46:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177669174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951949051] [2023-11-19 07:46:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:25,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:25,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 192 [2023-11-19 07:46:25,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 170 transitions, 1112 flow. Second operand has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 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) [2023-11-19 07:46:25,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:25,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 192 [2023-11-19 07:46:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:28,050 INFO L124 PetriNetUnfolderBase]: 6828/12078 cut-off events. [2023-11-19 07:46:28,050 INFO L125 PetriNetUnfolderBase]: For 11621/11705 co-relation queries the response was YES. [2023-11-19 07:46:28,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39955 conditions, 12078 events. 6828/12078 cut-off events. For 11621/11705 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 82877 event pairs, 1685 based on Foata normal form. 0/11341 useless extension candidates. Maximal degree in co-relation 33165. Up to 9361 conditions per place. [2023-11-19 07:46:28,164 INFO L140 encePairwiseOnDemand]: 166/192 looper letters, 184 selfloop transitions, 147 changer transitions 0/348 dead transitions. [2023-11-19 07:46:28,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 348 transitions, 2658 flow [2023-11-19 07:46:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2023-11-19 07:46:28,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2023-11-19 07:46:28,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2023-11-19 07:46:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2023-11-19 07:46:28,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:28,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2023-11-19 07:46:28,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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) [2023-11-19 07:46:28,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:28,175 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 192.0) internal successors, (1344), 7 states have internal predecessors, (1344), 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) [2023-11-19 07:46:28,176 INFO L175 Difference]: Start difference. First operand has 77 places, 170 transitions, 1112 flow. Second operand 6 states and 680 transitions. [2023-11-19 07:46:28,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 348 transitions, 2658 flow [2023-11-19 07:46:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 348 transitions, 2658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:28,222 INFO L231 Difference]: Finished difference. Result has 86 places, 304 transitions, 2402 flow [2023-11-19 07:46:28,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2402, PETRI_PLACES=86, PETRI_TRANSITIONS=304} [2023-11-19 07:46:28,224 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2023-11-19 07:46:28,225 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 304 transitions, 2402 flow [2023-11-19 07:46:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 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) [2023-11-19 07:46:28,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:28,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:28,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:46:28,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1184211711, now seen corresponding path program 1 times [2023-11-19 07:46:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:28,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670373116] [2023-11-19 07:46:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:28,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670373116] [2023-11-19 07:46:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670373116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386848048] [2023-11-19 07:46:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:28,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:28,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:28,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:46:28,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:28,972 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 [2023-11-19 07:46:29,004 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 [2023-11-19 07:46:29,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:29,048 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 [2023-11-19 07:46:29,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:29,096 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 [2023-11-19 07:46:29,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:29,161 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 [2023-11-19 07:46:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:29,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:29,208 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 [2023-11-19 07:46:29,233 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 [2023-11-19 07:46:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:46:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386848048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:33,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-19 07:46:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352914508] [2023-11-19 07:46:33,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:33,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 07:46:33,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:33,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:46:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=285, Unknown=13, NotChecked=74, Total=462 [2023-11-19 07:46:33,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 192 [2023-11-19 07:46:33,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 304 transitions, 2402 flow. Second operand has 22 states, 22 states have (on average 64.18181818181819) internal successors, (1412), 22 states have internal predecessors, (1412), 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) [2023-11-19 07:46:33,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:33,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 192 [2023-11-19 07:46:33,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:38,795 INFO L124 PetriNetUnfolderBase]: 9901/16577 cut-off events. [2023-11-19 07:46:38,795 INFO L125 PetriNetUnfolderBase]: For 26664/26666 co-relation queries the response was YES. [2023-11-19 07:46:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66504 conditions, 16577 events. 9901/16577 cut-off events. For 26664/26666 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 112429 event pairs, 1079 based on Foata normal form. 2/15031 useless extension candidates. Maximal degree in co-relation 57870. Up to 9938 conditions per place. [2023-11-19 07:46:39,004 INFO L140 encePairwiseOnDemand]: 174/192 looper letters, 517 selfloop transitions, 212 changer transitions 19/754 dead transitions. [2023-11-19 07:46:39,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 754 transitions, 6655 flow [2023-11-19 07:46:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:46:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:46:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 916 transitions. [2023-11-19 07:46:39,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336 [2023-11-19 07:46:39,011 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 916 transitions. [2023-11-19 07:46:39,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 916 transitions. [2023-11-19 07:46:39,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:39,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 916 transitions. [2023-11-19 07:46:39,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2023-11-19 07:46:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 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) [2023-11-19 07:46:39,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 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) [2023-11-19 07:46:39,024 INFO L175 Difference]: Start difference. First operand has 86 places, 304 transitions, 2402 flow. Second operand 10 states and 916 transitions. [2023-11-19 07:46:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 754 transitions, 6655 flow [2023-11-19 07:46:39,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 754 transitions, 6559 flow, removed 48 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:39,670 INFO L231 Difference]: Finished difference. Result has 102 places, 467 transitions, 4492 flow [2023-11-19 07:46:39,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4492, PETRI_PLACES=102, PETRI_TRANSITIONS=467} [2023-11-19 07:46:39,672 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2023-11-19 07:46:39,673 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 467 transitions, 4492 flow [2023-11-19 07:46:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 64.18181818181819) internal successors, (1412), 22 states have internal predecessors, (1412), 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) [2023-11-19 07:46:39,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:39,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:39,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:39,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:46:39,897 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)] === [2023-11-19 07:46:39,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1025221562, now seen corresponding path program 1 times [2023-11-19 07:46:39,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181595582] [2023-11-19 07:46:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:40,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:40,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181595582] [2023-11-19 07:46:40,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181595582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:40,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884330179] [2023-11-19 07:46:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:40,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:46:40,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:40,596 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 [2023-11-19 07:46:40,626 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 [2023-11-19 07:46:40,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:40,665 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 [2023-11-19 07:46:40,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:40,718 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 [2023-11-19 07:46:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:40,830 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 [2023-11-19 07:46:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:40,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:40,870 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 [2023-11-19 07:46:40,987 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#race| v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35)))) is different from false [2023-11-19 07:46:41,048 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_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= 0 (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1))) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 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_35 Int)) (or (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 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 [2023-11-19 07:46:41,127 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) (.cse1 (+ 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|) .cse2 0) .cse1 0)))) (and (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35))) (forall ((v_threadThread1of2ForFork0_~t~0.base_35 Int)) (or (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35) (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 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_35 Int)) (or (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of2ForFork0_~t~0.base_35 v_ArrVal_333) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2) 0)) (< |c_threadThread1of2ForFork0_#in~arg.base| v_threadThread1of2ForFork0_~t~0.base_35)))))) is different from false [2023-11-19 07:46:45,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:45,316 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 51 [2023-11-19 07:46:45,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:45,325 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 64 treesize of output 36 [2023-11-19 07:46:45,345 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:46:45,345 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 1 [2023-11-19 07:46:45,355 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:46:45,356 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 [2023-11-19 07:46:45,363 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:46:45,364 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 [2023-11-19 07:46:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:46:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884330179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:45,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:45,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-19 07:46:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168583344] [2023-11-19 07:46:45,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:45,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:46:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:46:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=290, Unknown=5, NotChecked=156, Total=552 [2023-11-19 07:46:45,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 192 [2023-11-19 07:46:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 467 transitions, 4492 flow. Second operand has 24 states, 24 states have (on average 66.04166666666667) internal successors, (1585), 24 states have internal predecessors, (1585), 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) [2023-11-19 07:46:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:45,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 192 [2023-11-19 07:46:45,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:50,917 INFO L124 PetriNetUnfolderBase]: 11877/20347 cut-off events. [2023-11-19 07:46:50,918 INFO L125 PetriNetUnfolderBase]: For 66487/66488 co-relation queries the response was YES. [2023-11-19 07:46:51,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98361 conditions, 20347 events. 11877/20347 cut-off events. For 66487/66488 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 142528 event pairs, 1242 based on Foata normal form. 180/18740 useless extension candidates. Maximal degree in co-relation 88258. Up to 10474 conditions per place. [2023-11-19 07:46:51,155 INFO L140 encePairwiseOnDemand]: 163/192 looper letters, 489 selfloop transitions, 320 changer transitions 12/827 dead transitions. [2023-11-19 07:46:51,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 827 transitions, 9172 flow [2023-11-19 07:46:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:46:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:46:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 852 transitions. [2023-11-19 07:46:51,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-11-19 07:46:51,160 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 852 transitions. [2023-11-19 07:46:51,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 852 transitions. [2023-11-19 07:46:51,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:51,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 852 transitions. [2023-11-19 07:46:51,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2023-11-19 07:46:51,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 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) [2023-11-19 07:46:51,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 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) [2023-11-19 07:46:51,169 INFO L175 Difference]: Start difference. First operand has 102 places, 467 transitions, 4492 flow. Second operand 10 states and 852 transitions. [2023-11-19 07:46:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 827 transitions, 9172 flow [2023-11-19 07:46:52,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 827 transitions, 9136 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:52,019 INFO L231 Difference]: Finished difference. Result has 117 places, 628 transitions, 7640 flow [2023-11-19 07:46:52,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7640, PETRI_PLACES=117, PETRI_TRANSITIONS=628} [2023-11-19 07:46:52,020 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2023-11-19 07:46:52,021 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 628 transitions, 7640 flow [2023-11-19 07:46:52,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 66.04166666666667) internal successors, (1585), 24 states have internal predecessors, (1585), 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) [2023-11-19 07:46:52,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:52,022 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] [2023-11-19 07:46:52,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:52,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:46:52,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2102315814, now seen corresponding path program 1 times [2023-11-19 07:46:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758040768] [2023-11-19 07:46:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:52,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:52,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758040768] [2023-11-19 07:46:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758040768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598657651] [2023-11-19 07:46:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:52,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:52,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87ce148b-a99d-45f8-8263-1e7ee1ce6fbe/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:52,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:52,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598657651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:52,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:46:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742236662] [2023-11-19 07:46:52,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:52,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 192 [2023-11-19 07:46:52,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 628 transitions, 7640 flow. Second operand has 9 states, 9 states have (on average 102.77777777777777) internal successors, (925), 9 states have internal predecessors, (925), 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) [2023-11-19 07:46:52,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:52,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 192 [2023-11-19 07:46:52,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:55,162 INFO L124 PetriNetUnfolderBase]: 5313/11098 cut-off events. [2023-11-19 07:46:55,162 INFO L125 PetriNetUnfolderBase]: For 52945/53942 co-relation queries the response was YES. [2023-11-19 07:46:55,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56142 conditions, 11098 events. 5313/11098 cut-off events. For 52945/53942 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 86426 event pairs, 244 based on Foata normal form. 192/11053 useless extension candidates. Maximal degree in co-relation 54774. Up to 4959 conditions per place. [2023-11-19 07:46:55,324 INFO L140 encePairwiseOnDemand]: 184/192 looper letters, 138 selfloop transitions, 22 changer transitions 23/682 dead transitions. [2023-11-19 07:46:55,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 682 transitions, 8633 flow [2023-11-19 07:46:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:46:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 958 transitions. [2023-11-19 07:46:55,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543981481481481 [2023-11-19 07:46:55,330 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 958 transitions. [2023-11-19 07:46:55,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 958 transitions. [2023-11-19 07:46:55,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:55,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 958 transitions. [2023-11-19 07:46:55,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.44444444444444) internal successors, (958), 9 states have internal predecessors, (958), 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) [2023-11-19 07:46:55,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 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) [2023-11-19 07:46:55,340 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 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) [2023-11-19 07:46:55,341 INFO L175 Difference]: Start difference. First operand has 117 places, 628 transitions, 7640 flow. Second operand 9 states and 958 transitions. [2023-11-19 07:46:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 682 transitions, 8633 flow [2023-11-19 07:46:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 682 transitions, 8609 flow, removed 0 selfloop flow, removed 2 redundant places.