./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:45,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:45,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:47:45,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:45,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:45,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:45,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:45,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:45,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:45,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:45,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:45,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:45,463 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:45,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:45,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:45,466 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:47:45,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:45,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:47:45,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:45,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:45,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:45,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:45,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:47:45,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:45,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:45,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:45,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:45,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:45,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:45,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:45,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:45,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:45,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:45,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:45,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:45,475 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:45,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:45,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:45,476 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:45,476 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_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2023-11-06 22:47:45,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:45,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:45,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:45,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:45,841 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:45,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-06 22:47:48,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:49,148 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:49,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2023-11-06 22:47:49,165 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/data/9cc4f8553/7238366206a84f969af85ca4b94b71cf/FLAGc892003a7 [2023-11-06 22:47:49,179 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/data/9cc4f8553/7238366206a84f969af85ca4b94b71cf [2023-11-06 22:47:49,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:49,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:49,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:49,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:49,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:49,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598e9e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49, skipping insertion in model container [2023-11-06 22:47:49,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:49,445 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2023-11-06 22:47:49,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:49,460 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:49,502 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2023-11-06 22:47:49,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:49,512 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:49,512 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:49,520 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:49,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49 WrapperNode [2023-11-06 22:47:49,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:49,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:49,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:49,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:49,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,590 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 404 [2023-11-06 22:47:49,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:49,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:49,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:49,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:49,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:49,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:49,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:49,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:49,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (1/1) ... [2023-11-06 22:47:49,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:49,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:49,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22b83e2-c23f-4872-8806-d6cabada8de6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:47:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:47:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:47:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:47:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:47:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:47:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:47:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:47:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:47:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:47:49,726 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:47:49,829 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:49,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:50,445 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:50,673 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:50,674 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:47:50,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:50 BoogieIcfgContainer [2023-11-06 22:47:50,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:50,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:50,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:50,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:50,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:49" (1/3) ... [2023-11-06 22:47:50,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:50, skipping insertion in model container [2023-11-06 22:47:50,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:49" (2/3) ... [2023-11-06 22:47:50,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:50, skipping insertion in model container [2023-11-06 22:47:50,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:50" (3/3) ... [2023-11-06 22:47:50,686 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-06 22:47:50,696 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:47:50,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:50,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:47:50,707 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:47:50,784 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:47:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 211 transitions, 450 flow [2023-11-06 22:47:50,924 INFO L124 PetriNetUnfolderBase]: 2/207 cut-off events. [2023-11-06 22:47:50,925 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:47:50,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 207 events. 2/207 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 199 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 159. Up to 2 conditions per place. [2023-11-06 22:47:50,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 211 transitions, 450 flow [2023-11-06 22:47:50,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 194 transitions, 412 flow [2023-11-06 22:47:50,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:50,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 194 transitions, 412 flow [2023-11-06 22:47:50,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 194 transitions, 412 flow [2023-11-06 22:47:50,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 194 transitions, 412 flow [2023-11-06 22:47:51,058 INFO L124 PetriNetUnfolderBase]: 2/194 cut-off events. [2023-11-06 22:47:51,060 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:47:51,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 2/194 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 198 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 159. Up to 2 conditions per place. [2023-11-06 22:47:51,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-11-06 22:47:57,352 INFO L134 LiptonReduction]: Checked pairs total: 60359 [2023-11-06 22:47:57,352 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 22:47:57,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:57,396 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=LoopsAndPotentialCycles, 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;@4ad3bc42, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:57,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:47:57,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:57,418 INFO L124 PetriNetUnfolderBase]: 0/76 cut-off events. [2023-11-06 22:47:57,418 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:47:57,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:57,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:57,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:47:57,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash 67432573, now seen corresponding path program 1 times [2023-11-06 22:47:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:57,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325641748] [2023-11-06 22:47:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:58,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325641748] [2023-11-06 22:47:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325641748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:58,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:47:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443759109] [2023-11-06 22:47:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:47:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:47:58,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:47:58,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 333 [2023-11-06 22:47:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 159.1818181818182) internal successors, (1751), 11 states have internal predecessors, (1751), 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) [2023-11-06 22:47:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 333 [2023-11-06 22:47:58,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:16,961 INFO L124 PetriNetUnfolderBase]: 131584/177036 cut-off events. [2023-11-06 22:48:16,961 INFO L125 PetriNetUnfolderBase]: For 6246/6246 co-relation queries the response was YES. [2023-11-06 22:48:17,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359172 conditions, 177036 events. 131584/177036 cut-off events. For 6246/6246 co-relation queries the response was YES. Maximal size of possible extension queue 4370. Compared 1194179 event pairs, 45943 based on Foata normal form. 1/176618 useless extension candidates. Maximal degree in co-relation 324012. Up to 69761 conditions per place. [2023-11-06 22:48:18,189 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 316 selfloop transitions, 25 changer transitions 27/388 dead transitions. [2023-11-06 22:48:18,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 388 transitions, 1638 flow [2023-11-06 22:48:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:48:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:48:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2525 transitions. [2023-11-06 22:48:18,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416130416130416 [2023-11-06 22:48:18,223 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2525 transitions. [2023-11-06 22:48:18,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2525 transitions. [2023-11-06 22:48:18,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:18,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2525 transitions. [2023-11-06 22:48:18,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 180.35714285714286) internal successors, (2525), 14 states have internal predecessors, (2525), 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) [2023-11-06 22:48:18,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 333.0) internal successors, (4995), 15 states have internal predecessors, (4995), 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) [2023-11-06 22:48:18,270 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 333.0) internal successors, (4995), 15 states have internal predecessors, (4995), 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) [2023-11-06 22:48:18,272 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 178 flow. Second operand 14 states and 2525 transitions. [2023-11-06 22:48:18,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 388 transitions, 1638 flow [2023-11-06 22:48:19,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 388 transitions, 1554 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 22:48:19,670 INFO L231 Difference]: Finished difference. Result has 100 places, 106 transitions, 317 flow [2023-11-06 22:48:19,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=317, PETRI_PLACES=100, PETRI_TRANSITIONS=106} [2023-11-06 22:48:19,677 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 10 predicate places. [2023-11-06 22:48:19,677 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 106 transitions, 317 flow [2023-11-06 22:48:19,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 159.1818181818182) internal successors, (1751), 11 states have internal predecessors, (1751), 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) [2023-11-06 22:48:19,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:19,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:19,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:19,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:48:19,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash 294296079, now seen corresponding path program 2 times [2023-11-06 22:48:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612453306] [2023-11-06 22:48:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612453306] [2023-11-06 22:48:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612453306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:21,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:21,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:48:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183592402] [2023-11-06 22:48:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:48:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:48:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:48:21,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 333 [2023-11-06 22:48:21,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 106 transitions, 317 flow. Second operand has 10 states, 10 states have (on average 157.8) internal successors, (1578), 10 states have internal predecessors, (1578), 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) [2023-11-06 22:48:21,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:21,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 333 [2023-11-06 22:48:21,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand