./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme --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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:58,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:58,584 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:47:58,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:58,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:58,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:58,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:58,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:58,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:58,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:58,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:58,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:58,644 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:58,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:58,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:58,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:58,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:58,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:58,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:58,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:58,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:58,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:58,650 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:47:58,651 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:58,651 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:58,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:58,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:58,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:58,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:58,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:58,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:58,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:58,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:58,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:58,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:58,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:58,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:58,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:58,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:58,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:58,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:58,659 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_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2023-11-26 11:47:58,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:59,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:59,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:59,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:59,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:59,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2023-11-26 11:48:02,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:02,659 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:02,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2023-11-26 11:48:02,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/data/7cb2a2e8a/f30bebe025a846faadcc890d4925d136/FLAG3f7088f92 [2023-11-26 11:48:02,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/data/7cb2a2e8a/f30bebe025a846faadcc890d4925d136 [2023-11-26 11:48:02,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:02,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:02,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:02,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:02,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:02,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46719518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02, skipping insertion in model container [2023-11-26 11:48:02,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:03,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:03,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:03,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:03,738 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:03,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03 WrapperNode [2023-11-26 11:48:03,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:03,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:03,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:03,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:03,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,841 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 106 [2023-11-26 11:48:03,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:03,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:03,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:03,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:03,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:03,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:03,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:03,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:03,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:03,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:03,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802296b6-f870-4b45-8619-cc7401d38155/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:48:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:48:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:48:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:48:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:48:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:48:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:48:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:04,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:04,042 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:48:04,212 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:04,215 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:04,575 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:04,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:04,642 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 11:48:04,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:04 BoogieIcfgContainer [2023-11-26 11:48:04,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:04,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:04,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:04,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:04,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:02" (1/3) ... [2023-11-26 11:48:04,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddc479b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:04, skipping insertion in model container [2023-11-26 11:48:04,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (2/3) ... [2023-11-26 11:48:04,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddc479b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:04, skipping insertion in model container [2023-11-26 11:48:04,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:04" (3/3) ... [2023-11-26 11:48:04,656 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-11-26 11:48:04,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:48:04,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:04,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:48:04,680 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:48:04,751 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:48:04,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 157 transitions, 321 flow [2023-11-26 11:48:04,895 INFO L124 PetriNetUnfolderBase]: 25/219 cut-off events. [2023-11-26 11:48:04,895 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:48:04,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 219 events. 25/219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 684 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2023-11-26 11:48:04,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 157 transitions, 321 flow [2023-11-26 11:48:04,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 157 transitions, 321 flow [2023-11-26 11:48:04,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:04,933 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;@32c6c325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:04,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-26 11:48:04,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:04,958 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-26 11:48:04,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:04,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:04,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:04,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-26 11:48:04,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1234801798, now seen corresponding path program 1 times [2023-11-26 11:48:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:04,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612008968] [2023-11-26 11:48:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:05,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612008968] [2023-11-26 11:48:05,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612008968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:05,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598726377] [2023-11-26 11:48:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:05,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2023-11-26 11:48:05,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-26 11:48:05,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:05,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2023-11-26 11:48:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:05,799 INFO L124 PetriNetUnfolderBase]: 69/542 cut-off events. [2023-11-26 11:48:05,800 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 11:48:05,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 542 events. 69/542 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2716 event pairs, 28 based on Foata normal form. 65/538 useless extension candidates. Maximal degree in co-relation 587. Up to 108 conditions per place. [2023-11-26 11:48:05,813 INFO L140 encePairwiseOnDemand]: 142/157 looper letters, 22 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2023-11-26 11:48:05,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 351 flow [2023-11-26 11:48:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-26 11:48:05,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8959660297239915 [2023-11-26 11:48:05,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-26 11:48:05,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-26 11:48:05,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:05,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-26 11:48:05,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-11-26 11:48:05,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2023-11-26 11:48:05,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2023-11-26 11:48:05,866 INFO L175 Difference]: Start difference. First operand has 144 places, 157 transitions, 321 flow. Second operand 3 states and 422 transitions. [2023-11-26 11:48:05,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 351 flow [2023-11-26 11:48:05,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 148 transitions, 351 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:05,878 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 299 flow [2023-11-26 11:48:05,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2023-11-26 11:48:05,889 INFO L281 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2023-11-26 11:48:05,889 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 299 flow [2023-11-26 11:48:05,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-26 11:48:05,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:05,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:05,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:05,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-26 11:48:05,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1734326148, now seen corresponding path program 1 times [2023-11-26 11:48:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475640348] [2023-11-26 11:48:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475640348] [2023-11-26 11:48:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475640348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:06,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:06,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242341541] [2023-11-26 11:48:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:06,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:06,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:06,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 157 [2023-11-26 11:48:06,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2023-11-26 11:48:06,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:06,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 157 [2023-11-26 11:48:06,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:06,342 INFO L124 PetriNetUnfolderBase]: 138/901 cut-off events. [2023-11-26 11:48:06,343 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 11:48:06,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 901 events. 138/901 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5641 event pairs, 26 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 1113. Up to 137 conditions per place. [2023-11-26 11:48:06,350 INFO L140 encePairwiseOnDemand]: 148/157 looper letters, 30 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2023-11-26 11:48:06,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 400 flow [2023-11-26 11:48:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-26 11:48:06,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8535031847133758 [2023-11-26 11:48:06,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-26 11:48:06,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-26 11:48:06,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:06,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-26 11:48:06,358 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) [2023-11-26 11:48:06,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2023-11-26 11:48:06,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2023-11-26 11:48:06,363 INFO L175 Difference]: Start difference. First operand has 144 places, 142 transitions, 299 flow. Second operand 3 states and 402 transitions. [2023-11-26 11:48:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 400 flow [2023-11-26 11:48:06,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 155 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:06,376 INFO L231 Difference]: Finished difference. Result has 144 places, 144 transitions, 333 flow [2023-11-26 11:48:06,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=144, PETRI_TRANSITIONS=144} [2023-11-26 11:48:06,378 INFO L281 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2023-11-26 11:48:06,378 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 144 transitions, 333 flow [2023-11-26 11:48:06,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2023-11-26 11:48:06,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:06,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:06,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:06,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-26 11:48:06,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1124661987, now seen corresponding path program 1 times [2023-11-26 11:48:06,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513002361] [2023-11-26 11:48:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:06,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:06,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:06,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:06,547 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-26 11:48:06,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-26 11:48:06,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-26 11:48:06,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-26 11:48:06,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-26 11:48:06,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-26 11:48:06,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-26 11:48:06,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-26 11:48:06,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-26 11:48:06,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-26 11:48:06,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-26 11:48:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:06,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:48:06,560 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:06,561 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:48:06,638 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:48:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 206 transitions, 428 flow [2023-11-26 11:48:06,748 INFO L124 PetriNetUnfolderBase]: 43/362 cut-off events. [2023-11-26 11:48:06,748 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:48:06,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 362 events. 43/362 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1377 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 221. Up to 9 conditions per place. [2023-11-26 11:48:06,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 206 transitions, 428 flow [2023-11-26 11:48:06,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 206 transitions, 428 flow [2023-11-26 11:48:06,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:06,770 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;@32c6c325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:06,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-26 11:48:06,784 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:06,784 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-26 11:48:06,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:06,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:06,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:06,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 11:48:06,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -406965050, now seen corresponding path program 1 times [2023-11-26 11:48:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867692529] [2023-11-26 11:48:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:06,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867692529] [2023-11-26 11:48:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867692529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:06,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:06,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732388815] [2023-11-26 11:48:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:06,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:06,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 206 [2023-11-26 11:48:06,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 206 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-26 11:48:06,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:06,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 206 [2023-11-26 11:48:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:07,948 INFO L124 PetriNetUnfolderBase]: 830/4355 cut-off events. [2023-11-26 11:48:07,949 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-26 11:48:07,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 4355 events. 830/4355 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 42494 event pairs, 348 based on Foata normal form. 742/4662 useless extension candidates. Maximal degree in co-relation 726. Up to 1303 conditions per place. [2023-11-26 11:48:07,996 INFO L140 encePairwiseOnDemand]: 185/206 looper letters, 31 selfloop transitions, 2 changer transitions 0/192 dead transitions. [2023-11-26 11:48:07,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 192 transitions, 466 flow [2023-11-26 11:48:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-11-26 11:48:08,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8770226537216829 [2023-11-26 11:48:08,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-11-26 11:48:08,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-11-26 11:48:08,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:08,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-11-26 11:48:08,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2023-11-26 11:48:08,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:08,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:08,011 INFO L175 Difference]: Start difference. First operand has 188 places, 206 transitions, 428 flow. Second operand 3 states and 542 transitions. [2023-11-26 11:48:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 192 transitions, 466 flow [2023-11-26 11:48:08,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 192 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:08,025 INFO L231 Difference]: Finished difference. Result has 188 places, 186 transitions, 398 flow [2023-11-26 11:48:08,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=188, PETRI_TRANSITIONS=186} [2023-11-26 11:48:08,029 INFO L281 CegarLoopForPetriNet]: 188 programPoint places, 0 predicate places. [2023-11-26 11:48:08,030 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 186 transitions, 398 flow [2023-11-26 11:48:08,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-26 11:48:08,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:08,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:48:08,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 11:48:08,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 426262649, now seen corresponding path program 1 times [2023-11-26 11:48:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669710578] [2023-11-26 11:48:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:08,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669710578] [2023-11-26 11:48:08,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669710578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:08,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055250710] [2023-11-26 11:48:08,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:08,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 206 [2023-11-26 11:48:08,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 186 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-11-26 11:48:08,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:08,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 206 [2023-11-26 11:48:08,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:11,341 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([725] t_funEXIT-->L952-9: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem53#1_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem53#1=|v_ULTIMATE.start_main_#t~mem53#1_8|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem53#1=|v_ULTIMATE.start_main_#t~mem53#1_8|} AuxVars[] AssignedVars[][192], [111#L952-9true, Black: 193#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of2ForFork0NotInUse, 191#true, t_funThread2of2ForFork0NotInUse, 196#true]) [2023-11-26 11:48:11,341 INFO L294 olderBase$Statistics]: this new event has 159 ancestors and is cut-off event [2023-11-26 11:48:11,342 INFO L297 olderBase$Statistics]: existing Event has 100 ancestors and is cut-off event [2023-11-26 11:48:11,342 INFO L297 olderBase$Statistics]: existing Event has 102 ancestors and is cut-off event [2023-11-26 11:48:11,342 INFO L297 olderBase$Statistics]: existing Event has 113 ancestors and is cut-off event [2023-11-26 11:48:11,352 INFO L124 PetriNetUnfolderBase]: 4416/15606 cut-off events. [2023-11-26 11:48:11,352 INFO L125 PetriNetUnfolderBase]: For 373/373 co-relation queries the response was YES. [2023-11-26 11:48:11,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22596 conditions, 15606 events. 4416/15606 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 181291 event pairs, 1328 based on Foata normal form. 0/13795 useless extension candidates. Maximal degree in co-relation 22539. Up to 3677 conditions per place. [2023-11-26 11:48:11,496 INFO L140 encePairwiseOnDemand]: 187/206 looper letters, 58 selfloop transitions, 14 changer transitions 0/219 dead transitions. [2023-11-26 11:48:11,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 219 transitions, 619 flow [2023-11-26 11:48:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-11-26 11:48:11,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.843042071197411 [2023-11-26 11:48:11,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-11-26 11:48:11,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-11-26 11:48:11,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:11,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-11-26 11:48:11,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-26 11:48:11,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:11,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:11,511 INFO L175 Difference]: Start difference. First operand has 188 places, 186 transitions, 398 flow. Second operand 3 states and 521 transitions. [2023-11-26 11:48:11,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 219 transitions, 619 flow [2023-11-26 11:48:11,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 219 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:11,519 INFO L231 Difference]: Finished difference. Result has 191 places, 200 transitions, 518 flow [2023-11-26 11:48:11,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=191, PETRI_TRANSITIONS=200} [2023-11-26 11:48:11,521 INFO L281 CegarLoopForPetriNet]: 188 programPoint places, 3 predicate places. [2023-11-26 11:48:11,521 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 200 transitions, 518 flow [2023-11-26 11:48:11,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-11-26 11:48:11,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:11,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:11,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:11,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 11:48:11,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:11,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1292401643, now seen corresponding path program 1 times [2023-11-26 11:48:11,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:11,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927198614] [2023-11-26 11:48:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:11,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:11,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927198614] [2023-11-26 11:48:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927198614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:11,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829120556] [2023-11-26 11:48:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:11,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 206 [2023-11-26 11:48:11,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 200 transitions, 518 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-26 11:48:11,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:11,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 206 [2023-11-26 11:48:11,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:15,126 INFO L124 PetriNetUnfolderBase]: 4509/18489 cut-off events. [2023-11-26 11:48:15,126 INFO L125 PetriNetUnfolderBase]: For 4447/4622 co-relation queries the response was YES. [2023-11-26 11:48:15,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29698 conditions, 18489 events. 4509/18489 cut-off events. For 4447/4622 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 232399 event pairs, 2405 based on Foata normal form. 43/16638 useless extension candidates. Maximal degree in co-relation 28302. Up to 5858 conditions per place. [2023-11-26 11:48:15,305 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 52 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2023-11-26 11:48:15,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 224 transitions, 736 flow [2023-11-26 11:48:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-11-26 11:48:15,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-26 11:48:15,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-11-26 11:48:15,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-11-26 11:48:15,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:15,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-11-26 11:48:15,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2023-11-26 11:48:15,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:15,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-26 11:48:15,319 INFO L175 Difference]: Start difference. First operand has 191 places, 200 transitions, 518 flow. Second operand 3 states and 515 transitions. [2023-11-26 11:48:15,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 224 transitions, 736 flow [2023-11-26 11:48:15,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 224 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:15,346 INFO L231 Difference]: Finished difference. Result has 193 places, 212 transitions, 616 flow [2023-11-26 11:48:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=193, PETRI_TRANSITIONS=212} [2023-11-26 11:48:15,351 INFO L281 CegarLoopForPetriNet]: 188 programPoint places, 5 predicate places. [2023-11-26 11:48:15,351 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 212 transitions, 616 flow [2023-11-26 11:48:15,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-26 11:48:15,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:15,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:15,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:15,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 11:48:15,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1284162683, now seen corresponding path program 1 times [2023-11-26 11:48:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66061357] [2023-11-26 11:48:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:15,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:15,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:15,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:15,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-26 11:48:15,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-26 11:48:15,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-26 11:48:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-26 11:48:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-26 11:48:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-26 11:48:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-26 11:48:15,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-26 11:48:15,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-26 11:48:15,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-26 11:48:15,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-26 11:48:15,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-26 11:48:15,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-26 11:48:15,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-26 11:48:15,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-26 11:48:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:15,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 11:48:15,439 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:15,439 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:48:15,502 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:48:15,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 255 transitions, 537 flow [2023-11-26 11:48:15,655 INFO L124 PetriNetUnfolderBase]: 66/552 cut-off events. [2023-11-26 11:48:15,655 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:48:15,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 552 events. 66/552 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2269 event pairs, 1 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2023-11-26 11:48:15,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 255 transitions, 537 flow [2023-11-26 11:48:15,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 255 transitions, 537 flow [2023-11-26 11:48:15,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:15,673 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;@32c6c325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:15,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-26 11:48:15,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:15,685 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-26 11:48:15,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:15,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:15,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:15,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-26 11:48:15,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1313634790, now seen corresponding path program 1 times [2023-11-26 11:48:15,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:15,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96520150] [2023-11-26 11:48:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:15,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:15,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96520150] [2023-11-26 11:48:15,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96520150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:15,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:15,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708632725] [2023-11-26 11:48:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:15,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:15,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 255 [2023-11-26 11:48:15,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 255 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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) [2023-11-26 11:48:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 255 [2023-11-26 11:48:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:21,997 INFO L124 PetriNetUnfolderBase]: 9011/35390 cut-off events. [2023-11-26 11:48:21,997 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-11-26 11:48:22,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48628 conditions, 35390 events. 9011/35390 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 471541 event pairs, 7791 based on Foata normal form. 7631/39668 useless extension candidates. Maximal degree in co-relation 6256. Up to 12802 conditions per place. [2023-11-26 11:48:22,329 INFO L140 encePairwiseOnDemand]: 228/255 looper letters, 39 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2023-11-26 11:48:22,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 235 transitions, 579 flow [2023-11-26 11:48:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-11-26 11:48:22,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8640522875816994 [2023-11-26 11:48:22,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-11-26 11:48:22,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-11-26 11:48:22,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:22,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-11-26 11:48:22,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2023-11-26 11:48:22,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-11-26 11:48:22,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2023-11-26 11:48:22,343 INFO L175 Difference]: Start difference. First operand has 232 places, 255 transitions, 537 flow. Second operand 3 states and 661 transitions. [2023-11-26 11:48:22,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 235 transitions, 579 flow [2023-11-26 11:48:22,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 235 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:22,351 INFO L231 Difference]: Finished difference. Result has 232 places, 229 transitions, 495 flow [2023-11-26 11:48:22,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=232, PETRI_TRANSITIONS=229} [2023-11-26 11:48:22,354 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 0 predicate places. [2023-11-26 11:48:22,354 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 229 transitions, 495 flow [2023-11-26 11:48:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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) [2023-11-26 11:48:22,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:22,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:22,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:48:22,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-26 11:48:22,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash 252916903, now seen corresponding path program 1 times [2023-11-26 11:48:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070253220] [2023-11-26 11:48:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:22,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:22,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070253220] [2023-11-26 11:48:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070253220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007754594] [2023-11-26 11:48:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:22,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:22,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 255 [2023-11-26 11:48:22,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 229 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-11-26 11:48:22,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:22,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 255 [2023-11-26 11:48:22,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand