./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX --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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:50:48,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:50:48,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:50:48,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:50:48,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:50:48,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:50:48,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:50:48,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:50:48,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:50:48,643 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:50:48,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:50:48,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:50:48,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:50:48,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:50:48,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:50:48,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:50:48,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:50:48,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:50:48,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:50:48,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:50:48,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:50:48,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:50:48,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:50:48,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:50:48,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:50:48,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:50:48,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:50:48,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:50:48,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:50:48,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:50:48,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:50:48,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:50:48,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:48,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:50:48,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:50:48,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:50:48,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:50:48,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:50:48,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:50:48,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:50:48,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:50:48,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:50:48,660 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-11-08 18:50:48,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:50:48,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:50:48,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:50:48,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:50:48,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:50:48,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i Unable to find full path for "g++" [2024-11-08 18:50:50,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:50:51,235 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:50:51,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-11-08 18:50:51,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/data/cdbc70c26/821ca7f875334933a9780ab9335286f0/FLAG2e2860c0c [2024-11-08 18:50:51,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/data/cdbc70c26/821ca7f875334933a9780ab9335286f0 [2024-11-08 18:50:51,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:50:51,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:50:51,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:51,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:50:51,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:50:51,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:51" (1/1) ... [2024-11-08 18:50:51,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37434ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:51, skipping insertion in model container [2024-11-08 18:50:51,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:51" (1/1) ... [2024-11-08 18:50:51,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:50:52,145 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_353474aa-ab34-4203-8ed0-3d3b9cdd5015/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2024-11-08 18:50:52,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:52,494 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:50:52,542 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_353474aa-ab34-4203-8ed0-3d3b9cdd5015/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2024-11-08 18:50:52,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:52,670 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:50:52,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52 WrapperNode [2024-11-08 18:50:52,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:52,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:52,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:50:52,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:50:52,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,855 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1783 [2024-11-08 18:50:52,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:52,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:50:52,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:50:52,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:50:52,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,924 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 2, 5, 259, 5, 1280, 14, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 0, 5, 256, 5, 1280, 0, 0]. The 11 writes are split as follows [0, 1, 0, 1, 0, 0, 8, 1]. [2024-11-08 18:50:52,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:52,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:53,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:53,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:50:53,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:50:53,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:50:53,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:50:53,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (1/1) ... [2024-11-08 18:50:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:53,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:50:53,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:50:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:50:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 18:50:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 18:50:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 18:50:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-08 18:50:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-08 18:50:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-08 18:50:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-08 18:50:53,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-08 18:50:53,108 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-08 18:50:53,108 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-08 18:50:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:50:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 18:50:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 18:50:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 18:50:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-08 18:50:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-08 18:50:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-08 18:50:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-08 18:50:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-08 18:50:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:50:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:50:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 18:50:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-08 18:50:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 18:50:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:50:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-08 18:50:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 18:50:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 18:50:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 18:50:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 18:50:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 18:50:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:50:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:50:53,123 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:50:53,430 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:50:53,432 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:50:55,780 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:50:55,781 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:51:41,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:51:41,329 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-08 18:51:41,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:51:41 BoogieIcfgContainer [2024-11-08 18:51:41,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:51:41,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:51:41,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:51:41,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:51:41,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:50:51" (1/3) ... [2024-11-08 18:51:41,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f3217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:51:41, skipping insertion in model container [2024-11-08 18:51:41,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:52" (2/3) ... [2024-11-08 18:51:41,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f3217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:51:41, skipping insertion in model container [2024-11-08 18:51:41,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:51:41" (3/3) ... [2024-11-08 18:51:41,339 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-11-08 18:51:41,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:51:41,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:51:41,359 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:51:41,503 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:51:41,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 92 transitions, 204 flow [2024-11-08 18:51:41,727 INFO L124 PetriNetUnfolderBase]: 52/202 cut-off events. [2024-11-08 18:51:41,727 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 18:51:41,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 202 events. 52/202 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 776 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2024-11-08 18:51:41,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 92 transitions, 204 flow [2024-11-08 18:51:41,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 90 transitions, 194 flow [2024-11-08 18:51:41,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:51:41,762 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;@77bddda0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:51:41,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 18:51:41,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:51:41,867 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2024-11-08 18:51:41,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:51:41,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:41,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:41,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:51:41,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1462581208, now seen corresponding path program 1 times [2024-11-08 18:51:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939263145] [2024-11-08 18:51:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939263145] [2024-11-08 18:51:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939263145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:42,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:51:42,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:51:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453290935] [2024-11-08 18:51:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:42,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:51:42,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:51:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:51:42,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2024-11-08 18:51:42,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-08 18:51:42,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:42,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2024-11-08 18:51:42,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:44,427 INFO L124 PetriNetUnfolderBase]: 2382/4625 cut-off events. [2024-11-08 18:51:44,427 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-08 18:51:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8449 conditions, 4625 events. 2382/4625 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32316 event pairs, 2178 based on Foata normal form. 407/4815 useless extension candidates. Maximal degree in co-relation 7180. Up to 3754 conditions per place. [2024-11-08 18:51:44,463 INFO L140 encePairwiseOnDemand]: 76/92 looper letters, 49 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-08 18:51:44,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 274 flow [2024-11-08 18:51:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:51:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:51:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-08 18:51:44,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5398550724637681 [2024-11-08 18:51:44,480 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 194 flow. Second operand 3 states and 149 transitions. [2024-11-08 18:51:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 274 flow [2024-11-08 18:51:44,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:51:44,493 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 184 flow [2024-11-08 18:51:44,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-11-08 18:51:44,501 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-08 18:51:44,502 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 184 flow [2024-11-08 18:51:44,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-08 18:51:44,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:44,502 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:44,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:51:44,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:51:44,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash -528639897, now seen corresponding path program 1 times [2024-11-08 18:51:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215318334] [2024-11-08 18:51:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:45,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215318334] [2024-11-08 18:51:45,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215318334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379261631] [2024-11-08 18:51:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:45,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:45,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:45,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:45,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:51:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:46,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 3767 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 18:51:46,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:46,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:46,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379261631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:46,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 18:51:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483325689] [2024-11-08 18:51:46,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:46,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:51:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:51:46,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:51:46,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-08 18:51:46,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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) [2024-11-08 18:51:46,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:46,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-08 18:51:46,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:47,278 INFO L124 PetriNetUnfolderBase]: 2381/4629 cut-off events. [2024-11-08 18:51:47,279 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-08 18:51:47,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 4629 events. 2381/4629 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32300 event pairs, 2178 based on Foata normal form. 3/4416 useless extension candidates. Maximal degree in co-relation 8453. Up to 3752 conditions per place. [2024-11-08 18:51:47,311 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 51 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-11-08 18:51:47,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 310 flow [2024-11-08 18:51:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:51:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:51:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-08 18:51:47,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2024-11-08 18:51:47,314 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 184 flow. Second operand 6 states and 225 transitions. [2024-11-08 18:51:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 310 flow [2024-11-08 18:51:47,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:47,318 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 218 flow [2024-11-08 18:51:47,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-08 18:51:47,319 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-08 18:51:47,319 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 218 flow [2024-11-08 18:51:47,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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) [2024-11-08 18:51:47,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:47,320 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:47,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:51:47,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:47,525 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:51:47,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash 962268052, now seen corresponding path program 2 times [2024-11-08 18:51:47,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:47,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068700985] [2024-11-08 18:51:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:47,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068700985] [2024-11-08 18:51:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068700985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050075509] [2024-11-08 18:51:48,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:51:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:48,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:48,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:51:49,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:51:49,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:51:49,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 3923 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:51:49,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:49,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050075509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:49,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 18:51:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426157005] [2024-11-08 18:51:49,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:49,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:51:49,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:51:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:51:49,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-08 18:51:49,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 29.076923076923077) internal successors, (378), 13 states have internal predecessors, (378), 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) [2024-11-08 18:51:49,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:49,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-08 18:51:49,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:50,593 INFO L124 PetriNetUnfolderBase]: 2381/4641 cut-off events. [2024-11-08 18:51:50,593 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-08 18:51:50,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8542 conditions, 4641 events. 2381/4641 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32332 event pairs, 2178 based on Foata normal form. 6/4431 useless extension candidates. Maximal degree in co-relation 8439. Up to 3752 conditions per place. [2024-11-08 18:51:50,625 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 57 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-11-08 18:51:50,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 452 flow [2024-11-08 18:51:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:51:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:51:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2024-11-08 18:51:50,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36141304347826086 [2024-11-08 18:51:50,628 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 218 flow. Second operand 12 states and 399 transitions. [2024-11-08 18:51:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 452 flow [2024-11-08 18:51:50,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 432 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:50,634 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 306 flow [2024-11-08 18:51:50,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-11-08 18:51:50,635 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 28 predicate places. [2024-11-08 18:51:50,635 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 306 flow [2024-11-08 18:51:50,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.076923076923077) internal successors, (378), 13 states have internal predecessors, (378), 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) [2024-11-08 18:51:50,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:50,636 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:50,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:51:50,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:50,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:51:50,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash 803193006, now seen corresponding path program 3 times [2024-11-08 18:51:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752398551] [2024-11-08 18:51:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752398551] [2024-11-08 18:51:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752398551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299790354] [2024-11-08 18:51:52,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:51:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:52,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:52,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:52:28,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 18:52:28,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:52:28,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 4235 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:52:28,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:52:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:29,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:52:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299790354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:52:29,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:52:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-08 18:52:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871528158] [2024-11-08 18:52:29,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:52:29,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:52:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:52:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:52:29,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-08 18:52:29,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 306 flow. Second operand has 25 states, 25 states have (on average 29.04) internal successors, (726), 25 states have internal predecessors, (726), 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) [2024-11-08 18:52:29,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:52:29,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-08 18:52:29,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:52:30,596 INFO L124 PetriNetUnfolderBase]: 2381/4665 cut-off events. [2024-11-08 18:52:30,596 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-11-08 18:52:30,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 4665 events. 2381/4665 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32314 event pairs, 2178 based on Foata normal form. 12/4461 useless extension candidates. Maximal degree in co-relation 8445. Up to 3752 conditions per place. [2024-11-08 18:52:30,637 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 69 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-11-08 18:52:30,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 784 flow [2024-11-08 18:52:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:52:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 18:52:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 753 transitions. [2024-11-08 18:52:30,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34103260869565216 [2024-11-08 18:52:30,641 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 306 flow. Second operand 24 states and 753 transitions. [2024-11-08 18:52:30,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 784 flow [2024-11-08 18:52:30,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 778 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:52:30,650 INFO L231 Difference]: Finished difference. Result has 134 places, 101 transitions, 532 flow [2024-11-08 18:52:30,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=532, PETRI_PLACES=134, PETRI_TRANSITIONS=101} [2024-11-08 18:52:30,651 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 61 predicate places. [2024-11-08 18:52:30,651 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 101 transitions, 532 flow [2024-11-08 18:52:30,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 29.04) internal successors, (726), 25 states have internal predecessors, (726), 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) [2024-11-08 18:52:30,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:52:30,652 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:52:30,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:52:30,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:30,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:52:30,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1691802142, now seen corresponding path program 4 times [2024-11-08 18:52:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:30,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401913399] [2024-11-08 18:52:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:30,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:33,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401913399] [2024-11-08 18:52:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401913399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:52:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833517607] [2024-11-08 18:52:33,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:52:33,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:52:33,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:52:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:52:34,769 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:52:34,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:52:34,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 4859 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:52:34,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:52:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:34,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:52:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833517607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:52:35,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:52:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-08 18:52:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916040912] [2024-11-08 18:52:35,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:52:35,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 18:52:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 18:52:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:52:35,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-08 18:52:35,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 101 transitions, 532 flow. Second operand has 49 states, 49 states have (on average 29.020408163265305) internal successors, (1422), 49 states have internal predecessors, (1422), 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) [2024-11-08 18:52:35,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:52:35,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-08 18:52:35,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:52:37,684 INFO L124 PetriNetUnfolderBase]: 2381/4713 cut-off events. [2024-11-08 18:52:37,685 INFO L125 PetriNetUnfolderBase]: For 4453/4453 co-relation queries the response was YES. [2024-11-08 18:52:37,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9171 conditions, 4713 events. 2381/4713 cut-off events. For 4453/4453 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32301 event pairs, 2178 based on Foata normal form. 24/4521 useless extension candidates. Maximal degree in co-relation 8457. Up to 3752 conditions per place. [2024-11-08 18:52:37,748 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 93 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2024-11-08 18:52:37,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 168 transitions, 1670 flow [2024-11-08 18:52:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 18:52:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-08 18:52:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1461 transitions. [2024-11-08 18:52:37,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33084239130434784 [2024-11-08 18:52:37,757 INFO L175 Difference]: Start difference. First operand has 134 places, 101 transitions, 532 flow. Second operand 48 states and 1461 transitions. [2024-11-08 18:52:37,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 168 transitions, 1670 flow [2024-11-08 18:52:37,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 168 transitions, 1652 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-08 18:52:37,777 INFO L231 Difference]: Finished difference. Result has 197 places, 126 transitions, 1062 flow [2024-11-08 18:52:37,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1062, PETRI_PLACES=197, PETRI_TRANSITIONS=126} [2024-11-08 18:52:37,779 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 124 predicate places. [2024-11-08 18:52:37,781 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 126 transitions, 1062 flow [2024-11-08 18:52:37,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 29.020408163265305) internal successors, (1422), 49 states have internal predecessors, (1422), 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) [2024-11-08 18:52:37,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:52:37,783 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 46, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:52:37,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:52:37,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:37,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:52:37,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1788992586, now seen corresponding path program 5 times [2024-11-08 18:52:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373831250] [2024-11-08 18:52:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:37,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:52:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373831250] [2024-11-08 18:52:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373831250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:52:44,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922040505] [2024-11-08 18:52:44,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:52:44,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:52:44,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:52:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353474aa-ab34-4203-8ed0-3d3b9cdd5015/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process