./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:45,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:45,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:27:45,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:45,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:45,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:45,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:45,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:45,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:45,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:45,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:45,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:45,979 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:45,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:45,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:45,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:45,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:27:45,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:45,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:45,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:45,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:45,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:45,985 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:27:45,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:27:45,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:45,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:45,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:45,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:45,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:45,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:45,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:45,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:45,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:45,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:45,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:27:45,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:27:45,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:45,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:45,993 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:45,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:45,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:45,994 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_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e [2023-11-21 22:27:46,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:46,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:46,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:46,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:46,410 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:46,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-21 22:27:49,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:50,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:50,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-21 22:27:50,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/data/79780041b/d16e9d646fb145a79f116d7bd7f0dd53/FLAG772f7c2b4 [2023-11-21 22:27:50,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/data/79780041b/d16e9d646fb145a79f116d7bd7f0dd53 [2023-11-21 22:27:50,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:50,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:50,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:50,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:50,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:50,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23650ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50, skipping insertion in model container [2023-11-21 22:27:50,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:50,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:50,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:50,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:50,816 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:50,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50 WrapperNode [2023-11-21 22:27:50,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:50,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:50,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:50,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:50,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,892 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-11-21 22:27:50,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:50,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:50,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:50,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:50,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:50,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:50,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:50,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:50,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:51,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:51,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:51,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c3da34-bfbc-4c2b-ae42-b4e3aaec7361/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 22:27:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 22:27:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:27:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:27:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:27:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:27:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:27:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:27:51,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:51,096 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:27:51,347 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:51,350 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:51,552 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:51,576 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:51,577 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:27:51,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:51 BoogieIcfgContainer [2023-11-21 22:27:51,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:51,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:51,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:51,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:51,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:50" (1/3) ... [2023-11-21 22:27:51,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7a457f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:51, skipping insertion in model container [2023-11-21 22:27:51,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50" (2/3) ... [2023-11-21 22:27:51,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7a457f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:51, skipping insertion in model container [2023-11-21 22:27:51,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:51" (3/3) ... [2023-11-21 22:27:51,591 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2023-11-21 22:27:51,602 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:27:51,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:51,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-21 22:27:51,616 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:27:51,674 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:27:51,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 63 transitions, 130 flow [2023-11-21 22:27:51,811 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-21 22:27:51,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:27:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 4/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-11-21 22:27:51,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 63 transitions, 130 flow [2023-11-21 22:27:51,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 63 transitions, 130 flow [2023-11-21 22:27:51,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:51,847 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;@727d1405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:51,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:27:51,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:27:51,870 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-21 22:27:51,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:27:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:51,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:51,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-21 22:27:51,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -546884405, now seen corresponding path program 1 times [2023-11-21 22:27:51,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:51,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545650486] [2023-11-21 22:27:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:51,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:52,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545650486] [2023-11-21 22:27:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545650486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:52,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375063097] [2023-11-21 22:27:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:52,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:52,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 63 [2023-11-21 22:27:52,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:52,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 63 [2023-11-21 22:27:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:52,366 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-21 22:27:52,366 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:27:52,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 11/62 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-11-21 22:27:52,368 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 7 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-21 22:27:52,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 122 flow [2023-11-21 22:27:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-21 22:27:52,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2023-11-21 22:27:52,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-21 22:27:52,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-21 22:27:52,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:52,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-21 22:27:52,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,398 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 3 states and 160 transitions. [2023-11-21 22:27:52,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 122 flow [2023-11-21 22:27:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:27:52,406 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 108 flow [2023-11-21 22:27:52,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-21 22:27:52,412 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-11-21 22:27:52,412 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 108 flow [2023-11-21 22:27:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:52,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:52,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:27:52,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-21 22:27:52,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2017439352, now seen corresponding path program 1 times [2023-11-21 22:27:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:52,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643217507] [2023-11-21 22:27:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:52,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:52,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:52,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:27:52,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-21 22:27:52,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-21 22:27:52,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-21 22:27:52,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-21 22:27:52,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-21 22:27:52,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-21 22:27:52,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-21 22:27:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:27:52,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 22:27:52,527 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:27:52,528 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:27:52,560 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:27:52,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 200 flow [2023-11-21 22:27:52,606 INFO L124 PetriNetUnfolderBase]: 7/119 cut-off events. [2023-11-21 22:27:52,606 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:27:52,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 119 events. 7/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2023-11-21 22:27:52,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 95 transitions, 200 flow [2023-11-21 22:27:52,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 200 flow [2023-11-21 22:27:52,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:52,616 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;@727d1405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:52,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-21 22:27:52,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:27:52,629 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-21 22:27:52,629 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:27:52,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:52,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:52,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:27:52,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1806090646, now seen corresponding path program 1 times [2023-11-21 22:27:52,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:52,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104331278] [2023-11-21 22:27:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:52,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:52,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104331278] [2023-11-21 22:27:52,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104331278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:52,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:52,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:52,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857200988] [2023-11-21 22:27:52,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:52,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:52,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:52,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-21 22:27:52,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:52,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-21 22:27:52,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:52,998 INFO L124 PetriNetUnfolderBase]: 57/334 cut-off events. [2023-11-21 22:27:52,998 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-21 22:27:53,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 334 events. 57/334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1694 event pairs, 37 based on Foata normal form. 108/396 useless extension candidates. Maximal degree in co-relation 386. Up to 109 conditions per place. [2023-11-21 22:27:53,004 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 18 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-11-21 22:27:53,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 235 flow [2023-11-21 22:27:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-21 22:27:53,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8701754385964913 [2023-11-21 22:27:53,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-21 22:27:53,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-21 22:27:53,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:53,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-21 22:27:53,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,016 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 200 flow. Second operand 3 states and 248 transitions. [2023-11-21 22:27:53,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 235 flow [2023-11-21 22:27:53,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:27:53,022 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 212 flow [2023-11-21 22:27:53,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2023-11-21 22:27:53,023 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -8 predicate places. [2023-11-21 22:27:53,024 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 212 flow [2023-11-21 22:27:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:53,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:27:53,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:27:53,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -828825003, now seen corresponding path program 1 times [2023-11-21 22:27:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435196624] [2023-11-21 22:27:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:53,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:53,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435196624] [2023-11-21 22:27:53,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435196624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:53,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086135507] [2023-11-21 22:27:53,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:53,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:53,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:53,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-21 22:27:53,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:53,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-21 22:27:53,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:53,269 INFO L124 PetriNetUnfolderBase]: 69/384 cut-off events. [2023-11-21 22:27:53,270 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-21 22:27:53,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 384 events. 69/384 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2062 event pairs, 37 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 544. Up to 123 conditions per place. [2023-11-21 22:27:53,276 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 21 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-21 22:27:53,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 293 flow [2023-11-21 22:27:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-21 22:27:53,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8350877192982457 [2023-11-21 22:27:53,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-21 22:27:53,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-21 22:27:53,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:53,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-21 22:27:53,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,300 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 212 flow. Second operand 3 states and 238 transitions. [2023-11-21 22:27:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 293 flow [2023-11-21 22:27:53,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:53,312 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 252 flow [2023-11-21 22:27:53,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2023-11-21 22:27:53,316 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2023-11-21 22:27:53,316 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 252 flow [2023-11-21 22:27:53,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:53,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:53,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:27:53,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:27:53,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1680372909, now seen corresponding path program 1 times [2023-11-21 22:27:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:53,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355658878] [2023-11-21 22:27:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:53,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:53,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:53,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:53,421 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:27:53,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-21 22:27:53,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-21 22:27:53,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-21 22:27:53,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-21 22:27:53,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-21 22:27:53,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-21 22:27:53,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-21 22:27:53,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-21 22:27:53,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-21 22:27:53,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-21 22:27:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:27:53,424 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:27:53,429 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:27:53,429 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:27:53,491 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:27:53,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 272 flow [2023-11-21 22:27:53,534 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-21 22:27:53,535 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:27:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 10/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2023-11-21 22:27:53,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 272 flow [2023-11-21 22:27:53,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 127 transitions, 272 flow [2023-11-21 22:27:53,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:53,552 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;@727d1405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:53,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 22:27:53,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:27:53,566 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-21 22:27:53,567 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:27:53,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:53,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:53,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:27:53,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1158823850, now seen corresponding path program 1 times [2023-11-21 22:27:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677032744] [2023-11-21 22:27:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:53,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:53,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677032744] [2023-11-21 22:27:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677032744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:53,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856860857] [2023-11-21 22:27:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:53,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:53,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-21 22:27:53,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:53,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-21 22:27:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:54,310 INFO L124 PetriNetUnfolderBase]: 783/2705 cut-off events. [2023-11-21 22:27:54,310 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2023-11-21 22:27:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 2705 events. 783/2705 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23807 event pairs, 556 based on Foata normal form. 838/3132 useless extension candidates. Maximal degree in co-relation 3387. Up to 1091 conditions per place. [2023-11-21 22:27:54,338 INFO L140 encePairwiseOnDemand]: 109/127 looper letters, 27 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2023-11-21 22:27:54,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 119 transitions, 340 flow [2023-11-21 22:27:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-21 22:27:54,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-21 22:27:54,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-21 22:27:54,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-21 22:27:54,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:54,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-21 22:27:54,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,346 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 272 flow. Second operand 3 states and 333 transitions. [2023-11-21 22:27:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 119 transitions, 340 flow [2023-11-21 22:27:54,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 119 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-21 22:27:54,353 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 296 flow [2023-11-21 22:27:54,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-21 22:27:54,356 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -11 predicate places. [2023-11-21 22:27:54,356 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 296 flow [2023-11-21 22:27:54,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:54,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:27:54,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:27:54,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash -758629932, now seen corresponding path program 1 times [2023-11-21 22:27:54,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879084627] [2023-11-21 22:27:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:54,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:54,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879084627] [2023-11-21 22:27:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879084627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:54,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802089798] [2023-11-21 22:27:54,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:54,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:54,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-21 22:27:54,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:54,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-21 22:27:54,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:55,266 INFO L124 PetriNetUnfolderBase]: 1015/3344 cut-off events. [2023-11-21 22:27:55,267 INFO L125 PetriNetUnfolderBase]: For 1009/1031 co-relation queries the response was YES. [2023-11-21 22:27:55,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 3344 events. 1015/3344 cut-off events. For 1009/1031 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30465 event pairs, 645 based on Foata normal form. 0/2842 useless extension candidates. Maximal degree in co-relation 6059. Up to 1358 conditions per place. [2023-11-21 22:27:55,310 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 33 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2023-11-21 22:27:55,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 430 flow [2023-11-21 22:27:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-21 22:27:55,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8372703412073491 [2023-11-21 22:27:55,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-21 22:27:55,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-21 22:27:55,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:55,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-21 22:27:55,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,321 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 296 flow. Second operand 3 states and 319 transitions. [2023-11-21 22:27:55,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 430 flow [2023-11-21 22:27:55,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:55,335 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 360 flow [2023-11-21 22:27:55,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2023-11-21 22:27:55,339 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -9 predicate places. [2023-11-21 22:27:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 360 flow [2023-11-21 22:27:55,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:55,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:27:55,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:27:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380159, now seen corresponding path program 1 times [2023-11-21 22:27:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:55,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343726224] [2023-11-21 22:27:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:27:55,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:55,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343726224] [2023-11-21 22:27:55,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343726224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:55,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012458201] [2023-11-21 22:27:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:55,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:55,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-21 22:27:55,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:55,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-21 22:27:55,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:56,441 INFO L124 PetriNetUnfolderBase]: 1566/4678 cut-off events. [2023-11-21 22:27:56,441 INFO L125 PetriNetUnfolderBase]: For 2828/2925 co-relation queries the response was YES. [2023-11-21 22:27:56,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 4678 events. 1566/4678 cut-off events. For 2828/2925 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 44080 event pairs, 800 based on Foata normal form. 1/3959 useless extension candidates. Maximal degree in co-relation 9809. Up to 1918 conditions per place. [2023-11-21 22:27:56,510 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 36 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2023-11-21 22:27:56,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 140 transitions, 551 flow [2023-11-21 22:27:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-21 22:27:56,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-21 22:27:56,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-21 22:27:56,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-21 22:27:56,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:56,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-21 22:27:56,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,521 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 360 flow. Second operand 3 states and 318 transitions. [2023-11-21 22:27:56,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 140 transitions, 551 flow [2023-11-21 22:27:56,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 507 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:56,540 INFO L231 Difference]: Finished difference. Result has 120 places, 135 transitions, 484 flow [2023-11-21 22:27:56,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=120, PETRI_TRANSITIONS=135} [2023-11-21 22:27:56,543 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -7 predicate places. [2023-11-21 22:27:56,543 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 484 flow [2023-11-21 22:27:56,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:56,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:27:56,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:27:56,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -225946769, now seen corresponding path program 1 times [2023-11-21 22:27:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198675482] [2023-11-21 22:27:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:56,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198675482] [2023-11-21 22:27:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198675482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511304738] [2023-11-21 22:27:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:56,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2023-11-21 22:27:56,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:56,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2023-11-21 22:27:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:58,280 INFO L124 PetriNetUnfolderBase]: 2598/8187 cut-off events. [2023-11-21 22:27:58,281 INFO L125 PetriNetUnfolderBase]: For 8320/8448 co-relation queries the response was YES. [2023-11-21 22:27:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18642 conditions, 8187 events. 2598/8187 cut-off events. For 8320/8448 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 86666 event pairs, 572 based on Foata normal form. 6/6935 useless extension candidates. Maximal degree in co-relation 18529. Up to 1919 conditions per place. [2023-11-21 22:27:58,381 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 54 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2023-11-21 22:27:58,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 870 flow [2023-11-21 22:27:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-21 22:27:58,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2023-11-21 22:27:58,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-21 22:27:58,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-21 22:27:58,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:58,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-21 22:27:58,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,390 INFO L175 Difference]: Start difference. First operand has 120 places, 135 transitions, 484 flow. Second operand 3 states and 323 transitions. [2023-11-21 22:27:58,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 870 flow [2023-11-21 22:27:58,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:58,408 INFO L231 Difference]: Finished difference. Result has 122 places, 165 transitions, 814 flow [2023-11-21 22:27:58,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=122, PETRI_TRANSITIONS=165} [2023-11-21 22:27:58,410 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2023-11-21 22:27:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 165 transitions, 814 flow [2023-11-21 22:27:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:58,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:27:58,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:27:58,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -86142850, now seen corresponding path program 1 times [2023-11-21 22:27:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580157990] [2023-11-21 22:27:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:27:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:58,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580157990] [2023-11-21 22:27:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580157990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:58,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:58,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677987772] [2023-11-21 22:27:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:58,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:58,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-21 22:27:58,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 165 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:58,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-21 22:27:58,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:00,519 INFO L124 PetriNetUnfolderBase]: 3523/10450 cut-off events. [2023-11-21 22:28:00,520 INFO L125 PetriNetUnfolderBase]: For 21032/21486 co-relation queries the response was YES. [2023-11-21 22:28:00,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 10450 events. 3523/10450 cut-off events. For 21032/21486 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 113574 event pairs, 1043 based on Foata normal form. 15/8940 useless extension candidates. Maximal degree in co-relation 27855. Up to 4052 conditions per place. [2023-11-21 22:28:00,650 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 72 selfloop transitions, 26 changer transitions 0/190 dead transitions. [2023-11-21 22:28:00,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 1197 flow [2023-11-21 22:28:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-21 22:28:00,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-21 22:28:00,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-21 22:28:00,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-21 22:28:00,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:00,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-21 22:28:00,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,656 INFO L175 Difference]: Start difference. First operand has 122 places, 165 transitions, 814 flow. Second operand 3 states and 318 transitions. [2023-11-21 22:28:00,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 1197 flow [2023-11-21 22:28:00,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1117 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:00,721 INFO L231 Difference]: Finished difference. Result has 124 places, 185 transitions, 1052 flow [2023-11-21 22:28:00,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=124, PETRI_TRANSITIONS=185} [2023-11-21 22:28:00,724 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -3 predicate places. [2023-11-21 22:28:00,724 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 185 transitions, 1052 flow [2023-11-21 22:28:00,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:00,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:00,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:28:00,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:28:00,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1038258495, now seen corresponding path program 1 times [2023-11-21 22:28:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:00,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552542365] [2023-11-21 22:28:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:28:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552542365] [2023-11-21 22:28:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552542365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:28:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427929426] [2023-11-21 22:28:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:00,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2023-11-21 22:28:00,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 185 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:00,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2023-11-21 22:28:00,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:00,955 INFO L124 PetriNetUnfolderBase]: 15/373 cut-off events. [2023-11-21 22:28:00,955 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-21 22:28:00,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 373 events. 15/373 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1507 event pairs, 3 based on Foata normal form. 14/362 useless extension candidates. Maximal degree in co-relation 362. Up to 29 conditions per place. [2023-11-21 22:28:00,957 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 6 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-11-21 22:28:00,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 382 flow [2023-11-21 22:28:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-21 22:28:00,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-21 22:28:00,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-21 22:28:00,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-21 22:28:00,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:00,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-21 22:28:00,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,964 INFO L175 Difference]: Start difference. First operand has 124 places, 185 transitions, 1052 flow. Second operand 3 states and 333 transitions. [2023-11-21 22:28:00,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 382 flow [2023-11-21 22:28:00,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 274 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-11-21 22:28:00,969 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 248 flow [2023-11-21 22:28:00,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2023-11-21 22:28:00,970 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -18 predicate places. [2023-11-21 22:28:00,970 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 248 flow [2023-11-21 22:28:00,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:00,971 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:00,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:28:00,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:28:00,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1622906571, now seen corresponding path program 1 times [2023-11-21 22:28:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:00,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006160554] [2023-11-21 22:28:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:00,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:01,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:01,019 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:01,020 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-21 22:28:01,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-21 22:28:01,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-21 22:28:01,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-21 22:28:01,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-21 22:28:01,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-21 22:28:01,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-21 22:28:01,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-21 22:28:01,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-21 22:28:01,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-21 22:28:01,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-21 22:28:01,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-21 22:28:01,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-21 22:28:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:28:01,023 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:01,024 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:01,024 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:28:01,069 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:28:01,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 346 flow [2023-11-21 22:28:01,110 INFO L124 PetriNetUnfolderBase]: 13/209 cut-off events. [2023-11-21 22:28:01,110 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:28:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 209 events. 13/209 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 564 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 172. Up to 10 conditions per place. [2023-11-21 22:28:01,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 346 flow [2023-11-21 22:28:01,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 159 transitions, 346 flow [2023-11-21 22:28:01,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:01,121 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;@727d1405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:01,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 22:28:01,127 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:01,127 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-21 22:28:01,127 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:28:01,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:01,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:01,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:28:01,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash 782752137, now seen corresponding path program 1 times [2023-11-21 22:28:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888062877] [2023-11-21 22:28:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:01,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888062877] [2023-11-21 22:28:01,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888062877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:01,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907692461] [2023-11-21 22:28:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:01,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-21 22:28:01,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 159 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:01,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:01,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-21 22:28:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:04,643 INFO L124 PetriNetUnfolderBase]: 7395/19566 cut-off events. [2023-11-21 22:28:04,643 INFO L125 PetriNetUnfolderBase]: For 4630/4630 co-relation queries the response was YES. [2023-11-21 22:28:04,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32423 conditions, 19566 events. 7395/19566 cut-off events. For 4630/4630 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 217380 event pairs, 5488 based on Foata normal form. 6072/22846 useless extension candidates. Maximal degree in co-relation 25204. Up to 9127 conditions per place. [2023-11-21 22:28:05,065 INFO L140 encePairwiseOnDemand]: 136/159 looper letters, 36 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2023-11-21 22:28:05,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 152 transitions, 449 flow [2023-11-21 22:28:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-21 22:28:05,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8763102725366876 [2023-11-21 22:28:05,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-21 22:28:05,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-21 22:28:05,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:05,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-21 22:28:05,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:05,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:05,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:05,075 INFO L175 Difference]: Start difference. First operand has 159 places, 159 transitions, 346 flow. Second operand 3 states and 418 transitions. [2023-11-21 22:28:05,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 152 transitions, 449 flow [2023-11-21 22:28:05,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 152 transitions, 437 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:05,081 INFO L231 Difference]: Finished difference. Result has 145 places, 143 transitions, 380 flow [2023-11-21 22:28:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=145, PETRI_TRANSITIONS=143} [2023-11-21 22:28:05,083 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -14 predicate places. [2023-11-21 22:28:05,084 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 143 transitions, 380 flow [2023-11-21 22:28:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:05,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:05,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:05,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:28:05,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:28:05,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash 992060563, now seen corresponding path program 1 times [2023-11-21 22:28:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702538496] [2023-11-21 22:28:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:05,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:05,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702538496] [2023-11-21 22:28:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702538496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625459555] [2023-11-21 22:28:05,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:05,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-21 22:28:05,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 143 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:05,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:05,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-21 22:28:05,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:09,261 INFO L124 PetriNetUnfolderBase]: 9861/25443 cut-off events. [2023-11-21 22:28:09,262 INFO L125 PetriNetUnfolderBase]: For 7988/8147 co-relation queries the response was YES. [2023-11-21 22:28:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49313 conditions, 25443 events. 9861/25443 cut-off events. For 7988/8147 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 290863 event pairs, 6724 based on Foata normal form. 0/21870 useless extension candidates. Maximal degree in co-relation 49192. Up to 11893 conditions per place. [2023-11-21 22:28:09,577 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 45 selfloop transitions, 12 changer transitions 0/163 dead transitions. [2023-11-21 22:28:09,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 163 transitions, 567 flow [2023-11-21 22:28:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-11-21 22:28:09,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8385744234800838 [2023-11-21 22:28:09,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-11-21 22:28:09,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-11-21 22:28:09,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:09,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-11-21 22:28:09,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:09,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:09,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:09,586 INFO L175 Difference]: Start difference. First operand has 145 places, 143 transitions, 380 flow. Second operand 3 states and 400 transitions. [2023-11-21 22:28:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 163 transitions, 567 flow [2023-11-21 22:28:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 163 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:09,626 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 468 flow [2023-11-21 22:28:09,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2023-11-21 22:28:09,627 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -12 predicate places. [2023-11-21 22:28:09,628 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 468 flow [2023-11-21 22:28:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:09,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:09,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:09,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:28:09,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:28:09,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1308563870, now seen corresponding path program 1 times [2023-11-21 22:28:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337868332] [2023-11-21 22:28:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:28:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:09,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337868332] [2023-11-21 22:28:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337868332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512059642] [2023-11-21 22:28:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:09,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:09,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:09,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-21 22:28:09,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:09,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:09,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-21 22:28:09,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:15,482 INFO L124 PetriNetUnfolderBase]: 16487/39501 cut-off events. [2023-11-21 22:28:15,482 INFO L125 PetriNetUnfolderBase]: For 27632/29807 co-relation queries the response was YES. [2023-11-21 22:28:15,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88367 conditions, 39501 events. 16487/39501 cut-off events. For 27632/29807 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 461647 event pairs, 9148 based on Foata normal form. 38/33405 useless extension candidates. Maximal degree in co-relation 88256. Up to 18525 conditions per place. [2023-11-21 22:28:15,951 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 51 selfloop transitions, 26 changer transitions 0/185 dead transitions. [2023-11-21 22:28:15,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 185 transitions, 772 flow [2023-11-21 22:28:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-21 22:28:15,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8364779874213837 [2023-11-21 22:28:15,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-21 22:28:15,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-21 22:28:15,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:15,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-21 22:28:15,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:15,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:15,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:15,959 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 468 flow. Second operand 3 states and 399 transitions. [2023-11-21 22:28:15,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 185 transitions, 772 flow [2023-11-21 22:28:16,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 185 transitions, 704 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:16,170 INFO L231 Difference]: Finished difference. Result has 149 places, 177 transitions, 676 flow [2023-11-21 22:28:16,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=149, PETRI_TRANSITIONS=177} [2023-11-21 22:28:16,171 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -10 predicate places. [2023-11-21 22:28:16,172 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 177 transitions, 676 flow [2023-11-21 22:28:16,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:16,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:16,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:16,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:28:16,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:28:16,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash 806903118, now seen corresponding path program 1 times [2023-11-21 22:28:16,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:16,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134206304] [2023-11-21 22:28:16,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:16,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:16,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134206304] [2023-11-21 22:28:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134206304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:16,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:16,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:16,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029276311] [2023-11-21 22:28:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:16,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 159 [2023-11-21 22:28:16,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 177 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:16,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:16,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 159 [2023-11-21 22:28:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:29,601 INFO L124 PetriNetUnfolderBase]: 42024/99748 cut-off events. [2023-11-21 22:28:29,601 INFO L125 PetriNetUnfolderBase]: For 128369/133202 co-relation queries the response was YES. [2023-11-21 22:28:30,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248432 conditions, 99748 events. 42024/99748 cut-off events. For 128369/133202 co-relation queries the response was YES. Maximal size of possible extension queue 3455. Compared 1297409 event pairs, 10303 based on Foata normal form. 123/82922 useless extension candidates. Maximal degree in co-relation 248303. Up to 27414 conditions per place. [2023-11-21 22:28:30,586 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 82 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2023-11-21 22:28:30,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 243 transitions, 1363 flow [2023-11-21 22:28:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-21 22:28:30,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2023-11-21 22:28:30,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-21 22:28:30,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-21 22:28:30,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:30,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-21 22:28:30,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:30,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:30,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:30,595 INFO L175 Difference]: Start difference. First operand has 149 places, 177 transitions, 676 flow. Second operand 3 states and 402 transitions. [2023-11-21 22:28:30,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 243 transitions, 1363 flow [2023-11-21 22:28:31,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 243 transitions, 1263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:31,445 INFO L231 Difference]: Finished difference. Result has 151 places, 232 transitions, 1290 flow [2023-11-21 22:28:31,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1290, PETRI_PLACES=151, PETRI_TRANSITIONS=232} [2023-11-21 22:28:31,446 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -8 predicate places. [2023-11-21 22:28:31,446 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 232 transitions, 1290 flow [2023-11-21 22:28:31,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:31,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:31,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:28:31,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:28:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1978372605, now seen corresponding path program 1 times [2023-11-21 22:28:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128062085] [2023-11-21 22:28:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:28:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128062085] [2023-11-21 22:28:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128062085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707926690] [2023-11-21 22:28:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:31,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:31,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-21 22:28:31,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 232 transitions, 1290 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:31,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:31,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-21 22:28:31,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand