./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.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_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/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_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/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_f283742e-ae7d-4679-bb19-f73e15a68059/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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:14,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:14,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:49:14,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:14,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:14,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:14,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:14,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:14,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:49:14,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:49:14,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:14,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:14,335 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:14,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:14,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:49:14,338 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:49:14,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:14,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:49:14,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:14,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:49:14,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:49:14,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:49:14,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:49:14,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:49:14,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:14,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:14,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:14,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:49:14,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:14,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:14,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:49:14,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:49:14,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:49:14,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:49:14,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:49:14,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:49:14,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:49:14,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:49:14,348 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:49:14,349 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_f283742e-ae7d-4679-bb19-f73e15a68059/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2023-11-06 22:49:14,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:14,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:14,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:14,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:14,649 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:14,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-11-06 22:49:18,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:49:18,328 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:49:18,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-11-06 22:49:18,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/data/d46ac599a/10213e3cec3141e583628b36029d4dab/FLAGf5a8f7b24 [2023-11-06 22:49:18,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/data/d46ac599a/10213e3cec3141e583628b36029d4dab [2023-11-06 22:49:18,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:49:18,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:49:18,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:18,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:49:18,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:49:18,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f01685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18, skipping insertion in model container [2023-11-06 22:49:18,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:49:18,725 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_f283742e-ae7d-4679-bb19-f73e15a68059/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-11-06 22:49:18,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:18,747 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:49:18,790 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_f283742e-ae7d-4679-bb19-f73e15a68059/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-11-06 22:49:18,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:18,803 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:49:18,804 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:49:18,818 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:49:18,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18 WrapperNode [2023-11-06 22:49:18,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:18,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:18,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:49:18,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:49:18,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,908 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 287 [2023-11-06 22:49:18,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:18,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:49:18,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:49:18,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:49:18,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:49:18,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:49:18,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:49:18,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:49:18,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (1/1) ... [2023-11-06 22:49:18,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:19,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:19,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f283742e-ae7d-4679-bb19-f73e15a68059/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:49:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:49:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:49:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:49:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:49:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:49:19,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:49:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:49:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:49:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:49:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:49:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:49:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:49:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:49:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 22:49:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 22:49:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-06 22:49:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-06 22:49:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:49:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:49:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:49:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:49:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:49:19,103 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 22:49:19,327 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:49:19,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:49:19,885 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:49:20,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:49:20,058 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:49:20,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:20 BoogieIcfgContainer [2023-11-06 22:49:20,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:49:20,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:49:20,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:49:20,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:49:20,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:18" (1/3) ... [2023-11-06 22:49:20,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a145de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:20, skipping insertion in model container [2023-11-06 22:49:20,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:18" (2/3) ... [2023-11-06 22:49:20,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a145de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:20, skipping insertion in model container [2023-11-06 22:49:20,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:20" (3/3) ... [2023-11-06 22:49:20,073 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-11-06 22:49:20,084 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:49:20,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:49:20,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:49:20,098 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:49:20,217 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-06 22:49:20,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 194 transitions, 430 flow [2023-11-06 22:49:20,446 INFO L124 PetriNetUnfolderBase]: 2/188 cut-off events. [2023-11-06 22:49:20,446 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:49:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 188 events. 2/188 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-06 22:49:20,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 194 transitions, 430 flow [2023-11-06 22:49:20,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 171 transitions, 378 flow [2023-11-06 22:49:20,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:49:20,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 171 transitions, 378 flow [2023-11-06 22:49:20,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 171 transitions, 378 flow [2023-11-06 22:49:20,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 171 transitions, 378 flow [2023-11-06 22:49:20,589 INFO L124 PetriNetUnfolderBase]: 2/171 cut-off events. [2023-11-06 22:49:20,589 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:49:20,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 171 events. 2/171 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-06 22:49:20,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 3042 [2023-11-06 22:49:32,205 INFO L134 LiptonReduction]: Checked pairs total: 15197 [2023-11-06 22:49:32,205 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-11-06 22:49:32,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:49:32,235 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;@6c322f16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:49:32,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:49:32,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:49:32,253 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-11-06 22:49:32,254 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:49:32,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:32,255 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] [2023-11-06 22:49:32,256 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 4 more)] === [2023-11-06 22:49:32,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2051780834, now seen corresponding path program 1 times [2023-11-06 22:49:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:32,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180134377] [2023-11-06 22:49:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:32,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:35,152 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 22:49:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180134377] [2023-11-06 22:49:35,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180134377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:35,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61378689] [2023-11-06 22:49:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:35,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:35,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 324 [2023-11-06 22:49:35,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 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 22:49:35,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:35,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 324 [2023-11-06 22:49:35,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:13,555 INFO L124 PetriNetUnfolderBase]: 340125/423387 cut-off events. [2023-11-06 22:50:13,556 INFO L125 PetriNetUnfolderBase]: For 24469/24469 co-relation queries the response was YES. [2023-11-06 22:50:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867685 conditions, 423387 events. 340125/423387 cut-off events. For 24469/24469 co-relation queries the response was YES. Maximal size of possible extension queue 7811. Compared 2325810 event pairs, 110086 based on Foata normal form. 1/423388 useless extension candidates. Maximal degree in co-relation 755129. Up to 219241 conditions per place. [2023-11-06 22:50:15,780 INFO L140 encePairwiseOnDemand]: 315/324 looper letters, 124 selfloop transitions, 13 changer transitions 13/150 dead transitions. [2023-11-06 22:50:15,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 150 transitions, 693 flow [2023-11-06 22:50:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:50:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:50:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 901 transitions. [2023-11-06 22:50:15,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561728395061728 [2023-11-06 22:50:15,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 901 transitions. [2023-11-06 22:50:15,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 901 transitions. [2023-11-06 22:50:15,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:15,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 901 transitions. [2023-11-06 22:50:15,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.2) internal successors, (901), 5 states have internal predecessors, (901), 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 22:50:15,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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 22:50:15,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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 22:50:15,846 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 136 flow. Second operand 5 states and 901 transitions. [2023-11-06 22:50:15,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 150 transitions, 693 flow [2023-11-06 22:50:25,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 150 transitions, 631 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 22:50:25,181 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 203 flow [2023-11-06 22:50:25,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-06 22:50:25,188 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-06 22:50:25,189 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 203 flow [2023-11-06 22:50:25,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 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 22:50:25,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:25,191 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] [2023-11-06 22:50:25,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:50:25,192 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 4 more)] === [2023-11-06 22:50:25,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1002631018, now seen corresponding path program 2 times [2023-11-06 22:50:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:25,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8647247] [2023-11-06 22:50:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:25,579 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 22:50:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8647247] [2023-11-06 22:50:25,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8647247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:25,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:25,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:50:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787127506] [2023-11-06 22:50:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:50:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:50:25,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:50:25,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 324 [2023-11-06 22:50:25,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 159.77777777777777) internal successors, (1438), 9 states have internal predecessors, (1438), 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 22:50:25,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:25,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 324 [2023-11-06 22:50:25,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand