./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl --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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:34,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:34,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:18:34,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:34,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:34,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:34,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:34,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:34,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:34,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:34,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:34,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:34,714 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:34,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:34,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:34,716 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:34,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:34,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:34,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:34,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:34,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:34,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:34,720 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:18:34,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:34,722 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:34,722 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:34,723 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:34,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:34,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:34,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:34,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:34,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:34,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:34,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:34,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:34,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:34,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:34,729 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:34,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:34,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:34,730 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:34,731 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_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2023-11-12 02:18:35,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:35,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:35,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:35,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:35,126 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:35,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-12 02:18:38,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:38,681 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:38,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-12 02:18:38,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/data/4ec3dc8fc/71c278c31c0c4f448228988f707197d5/FLAG240848489 [2023-11-12 02:18:38,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/data/4ec3dc8fc/71c278c31c0c4f448228988f707197d5 [2023-11-12 02:18:38,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:38,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:38,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:38,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:38,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:38,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:38" (1/1) ... [2023-11-12 02:18:38,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a953b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:38, skipping insertion in model container [2023-11-12 02:18:38,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:38" (1/1) ... [2023-11-12 02:18:38,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:39,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:39,319 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:39,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:39,417 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:39,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39 WrapperNode [2023-11-12 02:18:39,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:39,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:39,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:39,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:39,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,484 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 150 [2023-11-12 02:18:39,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:39,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:39,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:39,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:39,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:39,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:39,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:39,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:39,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (1/1) ... [2023-11-12 02:18:39,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:39,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:39,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086be48a-d9db-4a9f-8b2a-4df9828843c9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:18:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 02:18:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 02:18:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:39,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:18:39,791 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:39,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:40,177 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:40,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:40,402 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:18:40,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:40 BoogieIcfgContainer [2023-11-12 02:18:40,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:40,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:40,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:40,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:40,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:38" (1/3) ... [2023-11-12 02:18:40,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27601d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:40, skipping insertion in model container [2023-11-12 02:18:40,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:39" (2/3) ... [2023-11-12 02:18:40,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27601d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:40, skipping insertion in model container [2023-11-12 02:18:40,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:40" (3/3) ... [2023-11-12 02:18:40,415 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2023-11-12 02:18:40,425 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:18:40,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:40,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:18:40,438 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:40,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:18:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,685 INFO L124 PetriNetUnfolderBase]: 13/142 cut-off events. [2023-11-12 02:18:40,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:40,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 13/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-11-12 02:18:40,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,715 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:40,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,739 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 266 flow [2023-11-12 02:18:40,777 INFO L124 PetriNetUnfolderBase]: 13/142 cut-off events. [2023-11-12 02:18:40,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:40,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 13/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-11-12 02:18:40,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-11-12 02:18:59,531 INFO L134 LiptonReduction]: Checked pairs total: 2752 [2023-11-12 02:18:59,531 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-12 02:18:59,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:59,554 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;@760260e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:59,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:18:59,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:59,560 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-11-12 02:18:59,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:59,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:59,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:18:59,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-12 02:18:59,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash 648074984, now seen corresponding path program 1 times [2023-11-12 02:18:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506856032] [2023-11-12 02:18:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:59,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506856032] [2023-11-12 02:18:59,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506856032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:59,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:59,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42767620] [2023-11-12 02:18:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:59,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 278 [2023-11-12 02:18:59,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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) [2023-11-12 02:18:59,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:59,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 278 [2023-11-12 02:18:59,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:00,076 INFO L124 PetriNetUnfolderBase]: 25/55 cut-off events. [2023-11-12 02:19:00,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:19:00,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 25/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 16 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 102. Up to 55 conditions per place. [2023-11-12 02:19:00,080 INFO L140 encePairwiseOnDemand]: 268/278 looper letters, 15 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-11-12 02:19:00,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 16 transitions, 66 flow [2023-11-12 02:19:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:19:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:19:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2023-11-12 02:19:00,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46223021582733814 [2023-11-12 02:19:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2023-11-12 02:19:00,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2023-11-12 02:19:00,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:00,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2023-11-12 02:19:00,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2023-11-12 02:19:00,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2023-11-12 02:19:00,124 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2023-11-12 02:19:00,126 INFO L175 Difference]: Start difference. First operand has 24 places, 26 transitions, 56 flow. Second operand 2 states and 257 transitions. [2023-11-12 02:19:00,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 16 transitions, 66 flow [2023-11-12 02:19:00,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:19:00,131 INFO L231 Difference]: Finished difference. Result has 17 places, 16 transitions, 36 flow [2023-11-12 02:19:00,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=16} [2023-11-12 02:19:00,138 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-11-12 02:19:00,139 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 16 transitions, 36 flow [2023-11-12 02:19:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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) [2023-11-12 02:19:00,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:00,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:19:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:19:00,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-12 02:19:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1384637795, now seen corresponding path program 1 times [2023-11-12 02:19:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913021070] [2023-11-12 02:19:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:00,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:19:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:00,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:19:00,280 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:19:00,282 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:19:00,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-12 02:19:00,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-12 02:19:00,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-12 02:19:00,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-12 02:19:00,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-12 02:19:00,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-12 02:19:00,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-12 02:19:00,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-12 02:19:00,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-12 02:19:00,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-12 02:19:00,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-12 02:19:00,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-12 02:19:00,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-12 02:19:00,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-12 02:19:00,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-12 02:19:00,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-12 02:19:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:19:00,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:19:00,297 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:19:00,297 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:19:00,404 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:19:00,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,513 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-11-12 02:19:00,514 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 252 events. 25/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 722 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2023-11-12 02:19:00,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:00,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 466 flow [2023-11-12 02:19:00,606 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-11-12 02:19:00,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:00,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 252 events. 25/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 722 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2023-11-12 02:19:00,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 24000 [2023-11-12 02:19:22,427 INFO L134 LiptonReduction]: Checked pairs total: 79433 [2023-11-12 02:19:22,427 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-11-12 02:19:22,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:19:22,442 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;@760260e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:19:22,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:19:22,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:19:22,459 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-12 02:19:22,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:22,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:22,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:22,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 02:19:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1153066344, now seen corresponding path program 1 times [2023-11-12 02:19:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946896332] [2023-11-12 02:19:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:23,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946896332] [2023-11-12 02:19:23,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946896332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:23,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:23,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:19:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362378045] [2023-11-12 02:19:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:23,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 430 [2023-11-12 02:19:23,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 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) [2023-11-12 02:19:23,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:23,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 430 [2023-11-12 02:19:23,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:25,284 INFO L124 PetriNetUnfolderBase]: 881/2111 cut-off events. [2023-11-12 02:19:25,284 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-12 02:19:25,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 2111 events. 881/2111 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 15431 event pairs, 433 based on Foata normal form. 138/1920 useless extension candidates. Maximal degree in co-relation 1486. Up to 1050 conditions per place. [2023-11-12 02:19:25,305 INFO L140 encePairwiseOnDemand]: 407/430 looper letters, 96 selfloop transitions, 10 changer transitions 0/146 dead transitions. [2023-11-12 02:19:25,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 146 transitions, 534 flow [2023-11-12 02:19:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:19:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:19:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1283 transitions. [2023-11-12 02:19:25,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972868217054264 [2023-11-12 02:19:25,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1283 transitions. [2023-11-12 02:19:25,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1283 transitions. [2023-11-12 02:19:25,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:25,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1283 transitions. [2023-11-12 02:19:25,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 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) [2023-11-12 02:19:25,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 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) [2023-11-12 02:19:25,332 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 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) [2023-11-12 02:19:25,333 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 198 flow. Second operand 6 states and 1283 transitions. [2023-11-12 02:19:25,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 146 transitions, 534 flow [2023-11-12 02:19:25,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:19:25,339 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 236 flow [2023-11-12 02:19:25,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-11-12 02:19:25,341 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-11-12 02:19:25,341 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 236 flow [2023-11-12 02:19:25,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 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) [2023-11-12 02:19:25,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:25,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:19:25,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:19:25,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 02:19:25,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1958466664, now seen corresponding path program 1 times [2023-11-12 02:19:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814989284] [2023-11-12 02:19:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:25,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:19:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:25,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:19:25,437 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:19:25,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-12 02:19:25,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-12 02:19:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-12 02:19:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-12 02:19:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-12 02:19:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-12 02:19:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-12 02:19:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-12 02:19:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-12 02:19:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-12 02:19:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-12 02:19:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-12 02:19:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-12 02:19:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-12 02:19:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-12 02:19:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-12 02:19:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-12 02:19:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-12 02:19:25,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-12 02:19:25,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-12 02:19:25,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-12 02:19:25,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-12 02:19:25,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-12 02:19:25,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-12 02:19:25,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-12 02:19:25,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:19:25,445 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:19:25,446 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:19:25,446 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:19:25,561 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:19:25,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,670 INFO L124 PetriNetUnfolderBase]: 37/362 cut-off events. [2023-11-12 02:19:25,670 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:19:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 37/362 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1314 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2023-11-12 02:19:25,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:25,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 325 transitions, 668 flow [2023-11-12 02:19:25,788 INFO L124 PetriNetUnfolderBase]: 37/362 cut-off events. [2023-11-12 02:19:25,788 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:19:25,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 37/362 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1314 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2023-11-12 02:19:25,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 63936