./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:59:45,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:59:46,071 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:59:46,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:59:46,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:59:46,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:59:46,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:59:46,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:59:46,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:59:46,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:59:46,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:59:46,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:59:46,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:59:46,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:59:46,115 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:59:46,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:59:46,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:59:46,116 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:59:46,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:59:46,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:59:46,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:59:46,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:59:46,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:59:46,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:59:46,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:59:46,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:59:46,121 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:59:46,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:59:46,122 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:46,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:59:46,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:59:46,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:46,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:59:46,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:59:46,123 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:59:46,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:59:46,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:59:46,124 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_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB 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 -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-28 03:59:46,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:59:46,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:59:46,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:59:46,523 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:59:46,523 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:59:46,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-28 03:59:49,582 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/data/b4820b046/685edc96f26c4df58346dbedff8356df/FLAGc3a14ed7a [2024-11-28 03:59:49,923 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:59:49,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-28 03:59:49,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/data/b4820b046/685edc96f26c4df58346dbedff8356df/FLAGc3a14ed7a [2024-11-28 03:59:49,956 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/data/b4820b046/685edc96f26c4df58346dbedff8356df [2024-11-28 03:59:49,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:59:49,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:59:49,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:59:49,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:59:49,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:59:49,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:59:49" (1/1) ... [2024-11-28 03:59:49,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce6794d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:49, skipping insertion in model container [2024-11-28 03:59:49,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:59:49" (1/1) ... [2024-11-28 03:59:50,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:59:50,488 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_1b67b20e-8fdc-4371-917a-af7020bbd650/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2024-11-28 03:59:50,502 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,502 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,503 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,503 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:59:50,583 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:59:50,625 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_1b67b20e-8fdc-4371-917a-af7020bbd650/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2024-11-28 03:59:50,629 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,629 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,629 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,630 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-28 03:59:50,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:59:50,729 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:59:50,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50 WrapperNode [2024-11-28 03:59:50,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:59:50,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:59:50,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:59:50,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:59:50,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,813 INFO L138 Inliner]: procedures = 281, calls = 125, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 294 [2024-11-28 03:59:50,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:59:50,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:59:50,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:59:50,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:59:50,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,853 INFO L175 MemorySlicer]: Split 98 memory accesses to 4 slices as follows [2, 89, 5, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 70, 5, 0]. The 12 writes are split as follows [0, 11, 0, 1]. [2024-11-28 03:59:50,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,880 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:59:50,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:59:50,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:59:50,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:59:50,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (1/1) ... [2024-11-28 03:59:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:50,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:59:50,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:59:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:59:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:59:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 03:59:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:59:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:59:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:59:50,967 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:59:51,181 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:59:51,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:59:51,986 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:59:51,986 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:59:52,912 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:59:52,912 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-28 03:59:52,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:59:52 BoogieIcfgContainer [2024-11-28 03:59:52,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:59:52,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:59:52,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:59:52,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:59:52,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:59:49" (1/3) ... [2024-11-28 03:59:52,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5bf68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:59:52, skipping insertion in model container [2024-11-28 03:59:52,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:50" (2/3) ... [2024-11-28 03:59:52,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5bf68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:59:52, skipping insertion in model container [2024-11-28 03:59:52,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:59:52" (3/3) ... [2024-11-28 03:59:52,926 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-11-28 03:59:52,944 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:59:52,946 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_93-evilcollapse_racefree.i that has 2 procedures, 43 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-28 03:59:52,946 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:59:53,021 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 03:59:53,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-11-28 03:59:53,123 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-11-28 03:59:53,128 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:59:53,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-11-28 03:59:53,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-11-28 03:59:53,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-11-28 03:59:53,149 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:59:53,168 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;@9274aff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:59:53,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 03:59:53,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:59:53,188 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-28 03:59:53,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:59:53,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:59:53,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:59:53,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:53,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1320713841, now seen corresponding path program 1 times [2024-11-28 03:59:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691776640] [2024-11-28 03:59:53,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:53,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:53,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691776640] [2024-11-28 03:59:53,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691776640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:53,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:53,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:59:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045511837] [2024-11-28 03:59:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:53,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:53,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:53,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:53,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-28 03:59:53,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 03:59:53,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:59:53,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-28 03:59:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:59:54,191 INFO L124 PetriNetUnfolderBase]: 116/324 cut-off events. [2024-11-28 03:59:54,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:59:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 324 events. 116/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1292 event pairs, 95 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 536. Up to 237 conditions per place. [2024-11-28 03:59:54,199 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-28 03:59:54,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-11-28 03:59:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:59:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-28 03:59:54,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-28 03:59:54,221 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-11-28 03:59:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-11-28 03:59:54,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:59:54,234 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-11-28 03:59:54,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-28 03:59:54,242 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-11-28 03:59:54,242 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-11-28 03:59:54,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 03:59:54,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:59:54,242 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:54,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:59:54,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:54,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2091063547, now seen corresponding path program 1 times [2024-11-28 03:59:54,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:54,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900195483] [2024-11-28 03:59:54,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:54,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900195483] [2024-11-28 03:59:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900195483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27578206] [2024-11-28 03:59:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:54,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:54,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:54,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:54,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-28 03:59:54,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-28 03:59:54,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:59:54,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-28 03:59:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:59:54,821 INFO L124 PetriNetUnfolderBase]: 116/326 cut-off events. [2024-11-28 03:59:54,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:59:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 326 events. 116/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1295 event pairs, 95 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 561. Up to 240 conditions per place. [2024-11-28 03:59:54,828 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-28 03:59:54,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-11-28 03:59:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:59:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-28 03:59:54,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-11-28 03:59:54,830 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-11-28 03:59:54,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-11-28 03:59:54,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:59:54,835 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-11-28 03:59:54,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-28 03:59:54,836 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-11-28 03:59:54,837 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-11-28 03:59:54,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-28 03:59:54,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:59:54,837 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:54,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:59:54,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:54,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash 921422708, now seen corresponding path program 1 times [2024-11-28 03:59:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:54,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723278361] [2024-11-28 03:59:54,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723278361] [2024-11-28 03:59:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723278361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705287678] [2024-11-28 03:59:55,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:55,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:55,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:55,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:59:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:55,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:59:55,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:55,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:59:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:55,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705287678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:59:55,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:59:55,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:59:55,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268562871] [2024-11-28 03:59:55,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:59:55,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:59:55,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:55,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:59:55,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:55,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-28 03:59:55,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-11-28 03:59:55,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:59:55,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-28 03:59:55,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:59:56,291 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-11-28 03:59:56,291 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:59:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 332 events. 116/332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1310 event pairs, 95 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 568. Up to 240 conditions per place. [2024-11-28 03:59:56,294 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-11-28 03:59:56,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-11-28 03:59:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:59:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:59:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-11-28 03:59:56,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-11-28 03:59:56,296 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-11-28 03:59:56,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-11-28 03:59:56,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 03:59:56,299 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-11-28 03:59:56,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-28 03:59:56,300 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-11-28 03:59:56,300 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-11-28 03:59:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-11-28 03:59:56,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:59:56,301 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:56,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:59:56,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:56,502 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:56,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 578318139, now seen corresponding path program 2 times [2024-11-28 03:59:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705059108] [2024-11-28 03:59:56,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:59:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:56,670 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:59:56,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:59:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:59:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705059108] [2024-11-28 03:59:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705059108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499224841] [2024-11-28 03:59:56,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:59:56,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:56,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:56,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:59:57,308 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:59:57,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:59:57,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:59:57,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:57,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:59:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:59:57,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499224841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:59:57,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:59:57,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2024-11-28 03:59:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459803901] [2024-11-28 03:59:57,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:59:57,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:59:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:57,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:59:57,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:59:57,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-11-28 03:59:57,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-11-28 03:59:57,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:59:57,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-11-28 03:59:57,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:59:59,323 INFO L124 PetriNetUnfolderBase]: 117/357 cut-off events. [2024-11-28 03:59:59,323 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-28 03:59:59,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 357 events. 117/357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1365 event pairs, 95 based on Foata normal form. 19/322 useless extension candidates. Maximal degree in co-relation 564. Up to 237 conditions per place. [2024-11-28 03:59:59,327 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 32 selfloop transitions, 36 changer transitions 0/83 dead transitions. [2024-11-28 03:59:59,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 496 flow [2024-11-28 03:59:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:59:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 03:59:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 597 transitions. [2024-11-28 03:59:59,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2926470588235294 [2024-11-28 03:59:59,334 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 34 states and 597 transitions. [2024-11-28 03:59:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 496 flow [2024-11-28 03:59:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 454 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-28 03:59:59,339 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 452 flow [2024-11-28 03:59:59,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=452, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-11-28 03:59:59,340 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-11-28 03:59:59,340 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 452 flow [2024-11-28 03:59:59,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-11-28 03:59:59,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:59:59,341 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 03:59:59,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:59:59,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:59,545 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:59,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 87291303, now seen corresponding path program 3 times [2024-11-28 03:59:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849470319] [2024-11-28 03:59:59,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:59:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:16,985 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 04:00:16,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:00:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-28 04:00:17,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849470319] [2024-11-28 04:00:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849470319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582270882] [2024-11-28 04:00:17,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:00:17,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:17,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:17,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:17,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b67b20e-8fdc-4371-917a-af7020bbd650/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process