./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:49:00,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:00,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:49:00,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:00,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:00,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:00,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:00,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:00,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:00,721 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:00,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:49:00,721 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:49:00,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:00,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:00,722 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:00,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:00,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:49:00,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:49:00,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:49:00,724 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:00,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:49:00,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:49:00,725 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:00,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:00,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:00,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:49:00,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:49:00,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:00,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:00,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:49:00,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:49:00,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:49:00,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:49:00,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:49:00,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:49:00,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:49:00,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:49:00,727 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd 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 ! 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 -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2024-11-13 15:49:01,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:01,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:01,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:01,129 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:01,130 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:01,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i Unable to find full path for "g++" [2024-11-13 15:49:03,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:03,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:03,844 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2024-11-13 15:49:03,877 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/data/89b55f495/b6df53f86e494ab9acc618ef57f63704/FLAGf8178ea11 [2024-11-13 15:49:03,896 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/data/89b55f495/b6df53f86e494ab9acc618ef57f63704 [2024-11-13 15:49:03,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:03,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:03,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:03,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:03,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:03,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:03,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e9bc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03, skipping insertion in model container [2024-11-13 15:49:03,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:03,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:04,962 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2024-11-13 15:49:05,020 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2024-11-13 15:49:05,030 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2024-11-13 15:49:05,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:05,070 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:05,150 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2024-11-13 15:49:05,179 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2024-11-13 15:49:05,187 WARN L250 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_8023e8d7-1090-4dfa-b96c-eff1994f37d3/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2024-11-13 15:49:05,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:05,415 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:05,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05 WrapperNode [2024-11-13 15:49:05,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:05,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:05,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:05,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:05,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,605 INFO L138 Inliner]: procedures = 491, calls = 159, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1872 [2024-11-13 15:49:05,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:05,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:05,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:05,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:05,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,731 INFO L175 MemorySlicer]: Split 314 memory accesses to 9 slices as follows [2, 198, 2, 6, 8, 80, 4, 2, 12]. 63 percent of accesses are in the largest equivalence class. The 57 initializations are split as follows [2, 29, 0, 0, 2, 20, 0, 0, 4]. The 95 writes are split as follows [0, 61, 1, 4, 2, 20, 2, 1, 4]. [2024-11-13 15:49:05,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:05,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:05,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:05,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:05,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (1/1) ... [2024-11-13 15:49:05,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:05,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:05,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2024-11-13 15:49:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2024-11-13 15:49:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:49:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:49:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:49:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:49:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:49:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 15:49:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 15:49:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 15:49:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 15:49:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 15:49:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:49:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 15:49:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 15:49:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:49:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 15:49:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 15:49:05,935 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:49:06,444 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:06,445 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:09,377 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:49:09,378 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:11,613 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:11,614 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-13 15:49:11,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:11 BoogieIcfgContainer [2024-11-13 15:49:11,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:11,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:49:11,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:49:11,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:49:11,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:49:03" (1/3) ... [2024-11-13 15:49:11,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43116f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:11, skipping insertion in model container [2024-11-13 15:49:11,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:05" (2/3) ... [2024-11-13 15:49:11,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43116f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:11, skipping insertion in model container [2024-11-13 15:49:11,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:11" (3/3) ... [2024-11-13 15:49:11,628 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2024-11-13 15:49:11,648 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:49:11,650 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG workstealqueue_mutex-2.i that has 2 procedures, 230 locations, 1 initial locations, 11 loop locations, and 5 error locations. [2024-11-13 15:49:11,652 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:49:11,870 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 15:49:11,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 282 transitions, 571 flow [2024-11-13 15:49:12,317 INFO L124 PetriNetUnfolderBase]: 98/529 cut-off events. [2024-11-13 15:49:12,322 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:49:12,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 529 events. 98/529 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2464 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 271. Up to 6 conditions per place. [2024-11-13 15:49:12,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 282 transitions, 571 flow [2024-11-13 15:49:12,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 282 transitions, 571 flow [2024-11-13 15:49:12,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:12,385 INFO L333 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, 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;@5a6d494b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:12,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-13 15:49:12,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:49:12,401 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-13 15:49:12,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:49:12,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:12,402 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:12,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-13 15:49:12,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -735752899, now seen corresponding path program 1 times [2024-11-13 15:49:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862481696] [2024-11-13 15:49:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:13,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862481696] [2024-11-13 15:49:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862481696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:13,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:13,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447740803] [2024-11-13 15:49:13,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:13,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:13,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:13,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 282 [2024-11-13 15:49:13,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 282 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 15:49:13,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:13,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 282 [2024-11-13 15:49:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:18,613 INFO L124 PetriNetUnfolderBase]: 8298/15350 cut-off events. [2024-11-13 15:49:18,613 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:49:18,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29596 conditions, 15350 events. 8298/15350 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 94400 event pairs, 2788 based on Foata normal form. 146/14119 useless extension candidates. Maximal degree in co-relation 29524. Up to 7131 conditions per place. [2024-11-13 15:49:18,710 INFO L140 encePairwiseOnDemand]: 264/282 looper letters, 457 selfloop transitions, 12 changer transitions 2/505 dead transitions. [2024-11-13 15:49:18,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 505 transitions, 1959 flow [2024-11-13 15:49:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:49:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2024-11-13 15:49:18,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6962174940898345 [2024-11-13 15:49:18,744 INFO L175 Difference]: Start difference. First operand has 233 places, 282 transitions, 571 flow. Second operand 3 states and 589 transitions. [2024-11-13 15:49:18,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 505 transitions, 1959 flow [2024-11-13 15:49:18,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 505 transitions, 1959 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:49:18,770 INFO L231 Difference]: Finished difference. Result has 236 places, 280 transitions, 611 flow [2024-11-13 15:49:18,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=611, PETRI_PLACES=236, PETRI_TRANSITIONS=280} [2024-11-13 15:49:18,779 INFO L277 CegarLoopForPetriNet]: 233 programPoint places, 3 predicate places. [2024-11-13 15:49:18,782 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 280 transitions, 611 flow [2024-11-13 15:49:18,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 15:49:18,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:18,783 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:18,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:49:18,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-13 15:49:18,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1336133930, now seen corresponding path program 1 times [2024-11-13 15:49:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:18,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900907339] [2024-11-13 15:49:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:19,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900907339] [2024-11-13 15:49:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900907339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840846283] [2024-11-13 15:49:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:19,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:19,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:49:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:19,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:19,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:19,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840846283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:19,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:49:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474307097] [2024-11-13 15:49:19,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:19,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:19,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 282 [2024-11-13 15:49:19,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 280 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 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) [2024-11-13 15:49:19,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:19,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 282 [2024-11-13 15:49:19,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:19,851 INFO L124 PetriNetUnfolderBase]: 47/132 cut-off events. [2024-11-13 15:49:19,852 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-13 15:49:19,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 132 events. 47/132 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 361 event pairs, 0 based on Foata normal form. 21/146 useless extension candidates. Maximal degree in co-relation 236. Up to 79 conditions per place. [2024-11-13 15:49:19,853 INFO L140 encePairwiseOnDemand]: 277/282 looper letters, 50 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-13 15:49:19,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 258 flow [2024-11-13 15:49:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:49:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-11-13 15:49:19,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.1566193853427896 [2024-11-13 15:49:19,856 INFO L175 Difference]: Start difference. First operand has 236 places, 280 transitions, 611 flow. Second operand 6 states and 265 transitions. [2024-11-13 15:49:19,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 258 flow [2024-11-13 15:49:19,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:49:19,863 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 112 flow [2024-11-13 15:49:19,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-13 15:49:19,864 INFO L277 CegarLoopForPetriNet]: 233 programPoint places, -194 predicate places. [2024-11-13 15:49:19,864 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 112 flow [2024-11-13 15:49:19,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 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) [2024-11-13 15:49:19,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:19,865 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:19,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:20,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023e8d7-1090-4dfa-b96c-eff1994f37d3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:20,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-13 15:49:20,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash -35954563, now seen corresponding path program 2 times [2024-11-13 15:49:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:20,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828559471] [2024-11-13 15:49:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:20,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:20,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:20,273 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:49:20,274 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-13 15:49:20,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-13 15:49:20,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-13 15:49:20,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-13 15:49:20,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-13 15:49:20,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-13 15:49:20,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:49:20,277 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-11-13 15:49:20,281 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:49:20,281 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 15:49:20,429 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:49:20,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 307 transitions, 630 flow [2024-11-13 15:49:20,559 INFO L124 PetriNetUnfolderBase]: 152/815 cut-off events. [2024-11-13 15:49:20,560 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 15:49:20,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 815 events. 152/815 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4593 event pairs, 0 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 531. Up to 9 conditions per place. [2024-11-13 15:49:20,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 307 transitions, 630 flow [2024-11-13 15:49:20,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 307 transitions, 630 flow [2024-11-13 15:49:20,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:20,571 INFO L333 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, 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;@5a6d494b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:20,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-13 15:49:20,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:49:20,581 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-11-13 15:49:20,581 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:49:20,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:20,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:20,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-13 15:49:20,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1716682018, now seen corresponding path program 1 times [2024-11-13 15:49:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597503825] [2024-11-13 15:49:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:20,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597503825] [2024-11-13 15:49:20,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597503825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:20,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:20,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718476270] [2024-11-13 15:49:20,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:20,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:20,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 307 [2024-11-13 15:49:20,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 307 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-11-13 15:49:20,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:20,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 307 [2024-11-13 15:49:20,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand