./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:38:55,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:38:55,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 23:38:55,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:38:55,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:38:55,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:38:55,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:38:55,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:38:55,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:38:55,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:38:55,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:38:55,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:38:55,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:38:55,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:38:55,408 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:38:55,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:38:55,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:38:55,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:38:55,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:38:55,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:38:55,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:38:55,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:38:55,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:38:55,410 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:38:55,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:38:55,411 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:38:55,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:55,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:55,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:55,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:55,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:38:55,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:55,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:55,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:55,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:55,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:38:55,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:38:55,413 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:38:55,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:38:55,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:38:55,415 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_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC 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 ! overflow) ) 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 -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-23 23:38:55,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:38:55,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:38:55,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:38:55,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:38:55,796 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:38:55,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-23 23:38:59,085 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/data/df05f8ee2/de74e115e3d34409ad12c57dc123ce94/FLAG9920d3271 [2024-11-23 23:38:59,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:38:59,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-23 23:38:59,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/data/df05f8ee2/de74e115e3d34409ad12c57dc123ce94/FLAG9920d3271 [2024-11-23 23:38:59,644 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/data/df05f8ee2/de74e115e3d34409ad12c57dc123ce94 [2024-11-23 23:38:59,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:38:59,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:38:59,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:38:59,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:38:59,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:38:59,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:59" (1/1) ... [2024-11-23 23:38:59,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba29c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:59, skipping insertion in model container [2024-11-23 23:38:59,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:59" (1/1) ... [2024-11-23 23:38:59,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:39:00,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:00,602 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:39:00,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:00,822 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:39:00,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00 WrapperNode [2024-11-23 23:39:00,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:39:00,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:00,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:39:00,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:39:00,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,876 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2024-11-23 23:39:00,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:00,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:39:00,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:39:00,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:39:00,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,911 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [1, 5, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 5, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [1, 0, 1, 1, 1, 1, 1, 1, 1]. [2024-11-23 23:39:00,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,923 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:39:00,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:39:00,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:39:00,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:39:00,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (1/1) ... [2024-11-23 23:39:00,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:00,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:39:00,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:39:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-23 23:39:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-23 23:39:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-23 23:39:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-23 23:39:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 23:39:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:39:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:39:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:39:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:39:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:39:01,020 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:39:01,395 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:39:01,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:39:01,895 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:39:01,895 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:39:02,173 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:39:02,173 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-23 23:39:02,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:02 BoogieIcfgContainer [2024-11-23 23:39:02,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:39:02,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:39:02,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:39:02,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:39:02,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:38:59" (1/3) ... [2024-11-23 23:39:02,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6608ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:02, skipping insertion in model container [2024-11-23 23:39:02,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:00" (2/3) ... [2024-11-23 23:39:02,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6608ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:02, skipping insertion in model container [2024-11-23 23:39:02,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:02" (3/3) ... [2024-11-23 23:39:02,185 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-23 23:39:02,202 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:39:02,203 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_36-trylock_nr.i that has 3 procedures, 81 locations, 1 initial locations, 11 loop locations, and 10 error locations. [2024-11-23 23:39:02,203 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:39:02,278 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 23:39:02,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2024-11-23 23:39:02,383 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2024-11-23 23:39:02,385 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 23:39:02,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 31/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2024-11-23 23:39:02,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2024-11-23 23:39:02,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2024-11-23 23:39:02,409 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:39:02,427 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;@42ef2b35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:39:02,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-23 23:39:02,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:39:02,433 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-23 23:39:02,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:39:02,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:02,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 23:39:02,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:02,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash 631742, now seen corresponding path program 1 times [2024-11-23 23:39:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103334128] [2024-11-23 23:39:02,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:02,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103334128] [2024-11-23 23:39:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103334128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:02,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:02,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:39:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137308079] [2024-11-23 23:39:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:02,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:02,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:02,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:02,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 23:39:02,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-23 23:39:02,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:02,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 23:39:02,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:03,248 INFO L124 PetriNetUnfolderBase]: 627/1435 cut-off events. [2024-11-23 23:39:03,249 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-23 23:39:03,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 1435 events. 627/1435 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8963 event pairs, 498 based on Foata normal form. 285/1434 useless extension candidates. Maximal degree in co-relation 2351. Up to 966 conditions per place. [2024-11-23 23:39:03,268 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-23 23:39:03,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 211 flow [2024-11-23 23:39:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-23 23:39:03,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-11-23 23:39:03,285 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 192 transitions. [2024-11-23 23:39:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 211 flow [2024-11-23 23:39:03,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 23:39:03,294 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2024-11-23 23:39:03,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-23 23:39:03,300 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-23 23:39:03,300 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2024-11-23 23:39:03,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-23 23:39:03,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:03,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 23:39:03,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:39:03,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:03,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash 19584659, now seen corresponding path program 1 times [2024-11-23 23:39:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:03,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864293061] [2024-11-23 23:39:03,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864293061] [2024-11-23 23:39:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864293061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107367932] [2024-11-23 23:39:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:03,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:03,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:03,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:03,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 23:39:03,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-23 23:39:03,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:03,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 23:39:03,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:03,683 INFO L124 PetriNetUnfolderBase]: 627/1434 cut-off events. [2024-11-23 23:39:03,683 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-23 23:39:03,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 1434 events. 627/1434 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8968 event pairs, 498 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 2425. Up to 965 conditions per place. [2024-11-23 23:39:03,693 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-23 23:39:03,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 206 flow [2024-11-23 23:39:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-23 23:39:03,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-23 23:39:03,698 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 173 transitions. [2024-11-23 23:39:03,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 206 flow [2024-11-23 23:39:03,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:03,699 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2024-11-23 23:39:03,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-23 23:39:03,700 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-23 23:39:03,700 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2024-11-23 23:39:03,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-23 23:39:03,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:03,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:03,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:39:03,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:03,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1313237703, now seen corresponding path program 1 times [2024-11-23 23:39:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:03,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031873530] [2024-11-23 23:39:03,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:04,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:04,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031873530] [2024-11-23 23:39:04,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031873530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176811627] [2024-11-23 23:39:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:04,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:04,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:04,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:04,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:04,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 23:39:04,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-23 23:39:04,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:04,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 23:39:04,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:04,631 INFO L124 PetriNetUnfolderBase]: 1740/3794 cut-off events. [2024-11-23 23:39:04,632 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-23 23:39:04,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3794 events. 1740/3794 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 26040 event pairs, 434 based on Foata normal form. 50/3178 useless extension candidates. Maximal degree in co-relation 6643. Up to 1124 conditions per place. [2024-11-23 23:39:04,657 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 107 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-23 23:39:04,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 517 flow [2024-11-23 23:39:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-11-23 23:39:04,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2024-11-23 23:39:04,660 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 342 transitions. [2024-11-23 23:39:04,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 517 flow [2024-11-23 23:39:04,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:04,667 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2024-11-23 23:39:04,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-23 23:39:04,669 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-23 23:39:04,669 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2024-11-23 23:39:04,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-23 23:39:04,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:04,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:04,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:39:04,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:04,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 698976764, now seen corresponding path program 1 times [2024-11-23 23:39:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:04,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690788984] [2024-11-23 23:39:04,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690788984] [2024-11-23 23:39:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690788984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:04,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076050394] [2024-11-23 23:39:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:04,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:04,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:04,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:04,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 23:39:04,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-23 23:39:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 23:39:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:05,428 INFO L124 PetriNetUnfolderBase]: 1759/3801 cut-off events. [2024-11-23 23:39:05,428 INFO L125 PetriNetUnfolderBase]: For 199/225 co-relation queries the response was YES. [2024-11-23 23:39:05,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 3801 events. 1759/3801 cut-off events. For 199/225 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 25793 event pairs, 1243 based on Foata normal form. 143/3444 useless extension candidates. Maximal degree in co-relation 7182. Up to 2305 conditions per place. [2024-11-23 23:39:05,487 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 71 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-23 23:39:05,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 404 flow [2024-11-23 23:39:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:39:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-23 23:39:05,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-23 23:39:05,490 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 4 states and 258 transitions. [2024-11-23 23:39:05,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 404 flow [2024-11-23 23:39:05,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:39:05,494 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 202 flow [2024-11-23 23:39:05,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-23 23:39:05,496 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-23 23:39:05,497 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 202 flow [2024-11-23 23:39:05,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-23 23:39:05,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:05,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:05,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:39:05,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:05,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash -997830137, now seen corresponding path program 1 times [2024-11-23 23:39:05,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:05,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704112195] [2024-11-23 23:39:05,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:05,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704112195] [2024-11-23 23:39:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704112195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:05,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:05,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:05,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18446817] [2024-11-23 23:39:05,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:05,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:05,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:05,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:05,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 23:39:05,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-23 23:39:05,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:05,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 23:39:05,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:07,169 INFO L124 PetriNetUnfolderBase]: 4209/8910 cut-off events. [2024-11-23 23:39:07,169 INFO L125 PetriNetUnfolderBase]: For 3216/3731 co-relation queries the response was YES. [2024-11-23 23:39:07,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18053 conditions, 8910 events. 4209/8910 cut-off events. For 3216/3731 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 69045 event pairs, 1527 based on Foata normal form. 244/8030 useless extension candidates. Maximal degree in co-relation 18041. Up to 2742 conditions per place. [2024-11-23 23:39:07,250 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 117 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2024-11-23 23:39:07,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 152 transitions, 705 flow [2024-11-23 23:39:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-23 23:39:07,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609009009009009 [2024-11-23 23:39:07,259 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 202 flow. Second operand 5 states and 338 transitions. [2024-11-23 23:39:07,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 152 transitions, 705 flow [2024-11-23 23:39:07,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 152 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:07,275 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 224 flow [2024-11-23 23:39:07,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-23 23:39:07,276 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-11-23 23:39:07,279 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 224 flow [2024-11-23 23:39:07,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-23 23:39:07,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:07,280 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:07,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:39:07,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:07,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1216086534, now seen corresponding path program 1 times [2024-11-23 23:39:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:07,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577104746] [2024-11-23 23:39:07,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577104746] [2024-11-23 23:39:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577104746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962183353] [2024-11-23 23:39:07,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:07,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:07,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:07,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:07,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:39:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:07,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:39:07,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:07,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:39:07,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962183353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:07,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:39:07,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:39:07,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840073002] [2024-11-23 23:39:07,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:07,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:07,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:07,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:07,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:39:07,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 23:39:07,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-23 23:39:07,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:07,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 23:39:07,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:09,688 INFO L124 PetriNetUnfolderBase]: 4222/9091 cut-off events. [2024-11-23 23:39:09,688 INFO L125 PetriNetUnfolderBase]: For 3291/3492 co-relation queries the response was YES. [2024-11-23 23:39:09,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18913 conditions, 9091 events. 4222/9091 cut-off events. For 3291/3492 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 71165 event pairs, 827 based on Foata normal form. 403/8552 useless extension candidates. Maximal degree in co-relation 18900. Up to 3273 conditions per place. [2024-11-23 23:39:09,849 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-23 23:39:09,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 662 flow [2024-11-23 23:39:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:39:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-23 23:39:09,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-23 23:39:09,852 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 224 flow. Second operand 6 states and 378 transitions. [2024-11-23 23:39:09,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 662 flow [2024-11-23 23:39:09,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:39:09,865 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2024-11-23 23:39:09,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-11-23 23:39:09,866 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-23 23:39:09,867 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2024-11-23 23:39:09,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-23 23:39:09,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:09,867 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:09,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:10,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:10,068 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:10,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -956022350, now seen corresponding path program 1 times [2024-11-23 23:39:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:10,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333684899] [2024-11-23 23:39:10,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:10,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333684899] [2024-11-23 23:39:10,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333684899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784640097] [2024-11-23 23:39:10,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:10,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:10,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:10,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:10,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:39:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:10,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:39:10,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:10,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784640097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:10,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:10,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 23:39:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691974717] [2024-11-23 23:39:10,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:10,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:39:10,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:10,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:39:10,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:39:10,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 23:39:10,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-23 23:39:10,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:10,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 23:39:10,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:13,043 INFO L124 PetriNetUnfolderBase]: 7378/16237 cut-off events. [2024-11-23 23:39:13,043 INFO L125 PetriNetUnfolderBase]: For 7216/7541 co-relation queries the response was YES. [2024-11-23 23:39:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34013 conditions, 16237 events. 7378/16237 cut-off events. For 7216/7541 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 139255 event pairs, 827 based on Foata normal form. 742/15392 useless extension candidates. Maximal degree in co-relation 33998. Up to 2517 conditions per place. [2024-11-23 23:39:13,156 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 250 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-11-23 23:39:13,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 1398 flow [2024-11-23 23:39:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:39:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 23:39:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 732 transitions. [2024-11-23 23:39:13,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5995085995085995 [2024-11-23 23:39:13,164 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 732 transitions. [2024-11-23 23:39:13,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 1398 flow [2024-11-23 23:39:13,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 294 transitions, 1391 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:39:13,184 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-23 23:39:13,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-23 23:39:13,186 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 23:39:13,187 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-23 23:39:13,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-23 23:39:13,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:13,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:13,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:13,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:13,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:13,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 428078985, now seen corresponding path program 1 times [2024-11-23 23:39:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714142116] [2024-11-23 23:39:13,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714142116] [2024-11-23 23:39:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714142116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226840100] [2024-11-23 23:39:13,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:13,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:13,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:13,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:13,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:39:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:13,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:39:13,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:13,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:39:13,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226840100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:13,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:39:13,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 23:39:13,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250256550] [2024-11-23 23:39:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:13,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:13,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:13,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:13,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:39:13,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 23:39:13,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-23 23:39:13,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:13,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 23:39:13,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:15,517 INFO L124 PetriNetUnfolderBase]: 7861/16464 cut-off events. [2024-11-23 23:39:15,517 INFO L125 PetriNetUnfolderBase]: For 11764/12134 co-relation queries the response was YES. [2024-11-23 23:39:15,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37338 conditions, 16464 events. 7861/16464 cut-off events. For 11764/12134 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 135326 event pairs, 776 based on Foata normal form. 219/14852 useless extension candidates. Maximal degree in co-relation 37317. Up to 7995 conditions per place. [2024-11-23 23:39:15,620 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-23 23:39:15,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2024-11-23 23:39:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:39:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-23 23:39:15,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-23 23:39:15,622 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2024-11-23 23:39:15,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2024-11-23 23:39:15,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-23 23:39:15,672 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-23 23:39:15,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-23 23:39:15,673 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 23:39:15,673 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-23 23:39:15,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-23 23:39:15,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:15,674 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:15,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:39:15,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:15,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:15,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 385547414, now seen corresponding path program 1 times [2024-11-23 23:39:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415091020] [2024-11-23 23:39:15,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:39:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415091020] [2024-11-23 23:39:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415091020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:15,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:15,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873742736] [2024-11-23 23:39:15,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:15,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:15,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:15,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:15,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:15,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-23 23:39:15,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-23 23:39:15,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:15,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-23 23:39:15,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:17,949 INFO L124 PetriNetUnfolderBase]: 7681/16175 cut-off events. [2024-11-23 23:39:17,950 INFO L125 PetriNetUnfolderBase]: For 13519/13789 co-relation queries the response was YES. [2024-11-23 23:39:18,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36721 conditions, 16175 events. 7681/16175 cut-off events. For 13519/13789 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 135461 event pairs, 4904 based on Foata normal form. 237/14746 useless extension candidates. Maximal degree in co-relation 36701. Up to 8680 conditions per place. [2024-11-23 23:39:18,115 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-11-23 23:39:18,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2024-11-23 23:39:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:39:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-23 23:39:18,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-23 23:39:18,121 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2024-11-23 23:39:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2024-11-23 23:39:18,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 23:39:18,238 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2024-11-23 23:39:18,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-23 23:39:18,240 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-23 23:39:18,240 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2024-11-23 23:39:18,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-23 23:39:18,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:18,241 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:18,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:39:18,242 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:18,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1410598508, now seen corresponding path program 1 times [2024-11-23 23:39:18,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:18,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085683898] [2024-11-23 23:39:18,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:18,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:18,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085683898] [2024-11-23 23:39:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085683898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548042130] [2024-11-23 23:39:18,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:18,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:18,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:18,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:39:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:18,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:39:18,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:18,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:39:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548042130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:18,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:39:18,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 23:39:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490220904] [2024-11-23 23:39:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:18,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:18,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:18,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:39:18,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 23:39:18,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-23 23:39:18,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:18,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 23:39:18,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:20,740 INFO L124 PetriNetUnfolderBase]: 7598/15430 cut-off events. [2024-11-23 23:39:20,740 INFO L125 PetriNetUnfolderBase]: For 18644/19399 co-relation queries the response was YES. [2024-11-23 23:39:20,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36152 conditions, 15430 events. 7598/15430 cut-off events. For 18644/19399 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 124665 event pairs, 309 based on Foata normal form. 692/14301 useless extension candidates. Maximal degree in co-relation 36132. Up to 4193 conditions per place. [2024-11-23 23:39:20,828 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 196 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-23 23:39:20,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1666 flow [2024-11-23 23:39:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:39:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-23 23:39:20,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2024-11-23 23:39:20,830 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 398 transitions. [2024-11-23 23:39:20,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1666 flow [2024-11-23 23:39:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 228 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:39:20,856 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2024-11-23 23:39:20,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-11-23 23:39:20,859 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-23 23:39:20,859 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2024-11-23 23:39:20,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-23 23:39:20,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:20,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:20,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:21,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:39:21,061 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:21,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -778880064, now seen corresponding path program 1 times [2024-11-23 23:39:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:21,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743070877] [2024-11-23 23:39:21,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:21,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:21,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743070877] [2024-11-23 23:39:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743070877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825214533] [2024-11-23 23:39:21,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:21,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:21,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:21,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:39:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:21,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:39:21,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:21,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825214533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:21,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:21,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 23:39:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348024128] [2024-11-23 23:39:21,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:21,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:39:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:21,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:39:21,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:39:21,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 23:39:21,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-23 23:39:21,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:21,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 23:39:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:24,529 INFO L124 PetriNetUnfolderBase]: 12595/25565 cut-off events. [2024-11-23 23:39:24,529 INFO L125 PetriNetUnfolderBase]: For 24251/25520 co-relation queries the response was YES. [2024-11-23 23:39:24,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58652 conditions, 25565 events. 12595/25565 cut-off events. For 24251/25520 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 218064 event pairs, 662 based on Foata normal form. 941/23614 useless extension candidates. Maximal degree in co-relation 58631. Up to 3648 conditions per place. [2024-11-23 23:39:24,665 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 372 selfloop transitions, 11 changer transitions 0/411 dead transitions. [2024-11-23 23:39:24,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 411 transitions, 2924 flow [2024-11-23 23:39:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:39:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 23:39:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2024-11-23 23:39:24,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2024-11-23 23:39:24,668 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 733 transitions. [2024-11-23 23:39:24,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 411 transitions, 2924 flow [2024-11-23 23:39:24,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 411 transitions, 2917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:39:24,704 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2024-11-23 23:39:24,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2024-11-23 23:39:24,705 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-11-23 23:39:24,705 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2024-11-23 23:39:24,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-23 23:39:24,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:24,705 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:24,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:24,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 23:39:24,906 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:24,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1830278303, now seen corresponding path program 2 times [2024-11-23 23:39:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769005813] [2024-11-23 23:39:24,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:24,937 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:24,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:25,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769005813] [2024-11-23 23:39:25,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769005813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:25,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952759596] [2024-11-23 23:39:25,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:25,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:25,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:25,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:39:25,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:25,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:25,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:39:25,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:25,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:25,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952759596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:25,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:25,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-23 23:39:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559122502] [2024-11-23 23:39:25,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:25,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:39:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:25,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:39:25,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:39:26,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 23:39:26,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-23 23:39:26,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:26,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 23:39:26,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:34,446 INFO L124 PetriNetUnfolderBase]: 27757/59703 cut-off events. [2024-11-23 23:39:34,447 INFO L125 PetriNetUnfolderBase]: For 97443/97864 co-relation queries the response was YES. [2024-11-23 23:39:34,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139945 conditions, 59703 events. 27757/59703 cut-off events. For 97443/97864 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 576273 event pairs, 1398 based on Foata normal form. 2377/56175 useless extension candidates. Maximal degree in co-relation 139921. Up to 8480 conditions per place. [2024-11-23 23:39:34,762 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 660 selfloop transitions, 43 changer transitions 0/730 dead transitions. [2024-11-23 23:39:34,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 730 transitions, 4500 flow [2024-11-23 23:39:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:39:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 23:39:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1551 transitions. [2024-11-23 23:39:34,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075205640423031 [2024-11-23 23:39:34,768 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1551 transitions. [2024-11-23 23:39:34,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 730 transitions, 4500 flow [2024-11-23 23:39:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 730 transitions, 4060 flow, removed 132 selfloop flow, removed 4 redundant places. [2024-11-23 23:39:34,853 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2024-11-23 23:39:34,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-11-23 23:39:34,854 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-23 23:39:34,854 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2024-11-23 23:39:34,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-23 23:39:34,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:34,855 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:34,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:39:35,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:39:35,059 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:35,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1326547693, now seen corresponding path program 2 times [2024-11-23 23:39:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:35,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955135127] [2024-11-23 23:39:35,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:35,098 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:35,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955135127] [2024-11-23 23:39:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955135127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290095070] [2024-11-23 23:39:35,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:35,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:35,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:35,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:35,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:39:35,636 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:35,637 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:35,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:39:35,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:35,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290095070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:35,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-23 23:39:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189341942] [2024-11-23 23:39:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:35,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:39:35,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:35,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:39:35,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:39:35,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-23 23:39:35,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-23 23:39:35,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:35,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-23 23:39:35,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:54,100 INFO L124 PetriNetUnfolderBase]: 62365/125369 cut-off events. [2024-11-23 23:39:54,100 INFO L125 PetriNetUnfolderBase]: For 257443/263668 co-relation queries the response was YES. [2024-11-23 23:39:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304866 conditions, 125369 events. 62365/125369 cut-off events. For 257443/263668 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 1229169 event pairs, 1538 based on Foata normal form. 6803/118938 useless extension candidates. Maximal degree in co-relation 304829. Up to 18204 conditions per place. [2024-11-23 23:39:55,268 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1338 selfloop transitions, 23 changer transitions 0/1389 dead transitions. [2024-11-23 23:39:55,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1389 transitions, 14369 flow [2024-11-23 23:39:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:39:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 23:39:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1546 transitions. [2024-11-23 23:39:55,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6055620838229534 [2024-11-23 23:39:55,275 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1546 transitions. [2024-11-23 23:39:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1389 transitions, 14369 flow [2024-11-23 23:39:55,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1389 transitions, 11991 flow, removed 264 selfloop flow, removed 10 redundant places. [2024-11-23 23:39:55,589 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2024-11-23 23:39:55,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=759, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2024-11-23 23:39:55,590 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-23 23:39:55,590 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2024-11-23 23:39:55,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-23 23:39:55,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:55,591 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:55,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:39:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:39:55,791 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:39:55,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1547575233, now seen corresponding path program 3 times [2024-11-23 23:39:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082410756] [2024-11-23 23:39:55,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:55,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-23 23:39:55,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:56,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082410756] [2024-11-23 23:39:56,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082410756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225076261] [2024-11-23 23:39:56,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:56,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:56,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f92e6-c0d9-4ebc-b7f1-75616c203738/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:39:56,869 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-23 23:39:56,870 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:56,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:39:56,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:57,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225076261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:57,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:57,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-23 23:39:57,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566407978] [2024-11-23 23:39:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-23 23:39:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:57,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-23 23:39:57,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:39:57,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-23 23:39:57,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 46.875) internal successors, (2250), 48 states have internal predecessors, (2250), 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) [2024-11-23 23:39:57,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:57,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-23 23:39:57,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand