./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB --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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:21:15,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:21:15,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 23:21:15,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:21:15,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:21:15,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:21:15,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:21:15,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:21:15,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:21:15,388 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:21:15,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:21:15,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:21:15,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:21:15,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:21:15,389 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:21:15,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:21:15,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:21:15,391 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:21:15,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:15,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:15,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:15,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:21:15,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:21:15,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:21:15,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:21:15,394 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_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-27 23:21:15,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:21:15,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:21:15,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:21:15,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:21:15,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:21:15,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-27 23:21:18,978 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/data/6194687a6/15faca06c5894de0bbcc020645772a43/FLAGb148dc89a [2024-11-27 23:21:19,237 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:21:19,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-27 23:21:19,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/data/6194687a6/15faca06c5894de0bbcc020645772a43/FLAGb148dc89a [2024-11-27 23:21:19,263 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/data/6194687a6/15faca06c5894de0bbcc020645772a43 [2024-11-27 23:21:19,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:21:19,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:21:19,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:19,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:21:19,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:21:19,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64da7d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19, skipping insertion in model container [2024-11-27 23:21:19,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,300 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:21:19,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:19,535 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:21:19,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:19,576 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:21:19,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19 WrapperNode [2024-11-27 23:21:19,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:19,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:19,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:21:19,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:21:19,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,625 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-27 23:21:19,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:19,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:21:19,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:21:19,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:21:19,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,641 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,670 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:21:19,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,675 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:21:19,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:21:19,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:21:19,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:21:19,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (1/1) ... [2024-11-27 23:21:19,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:19,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:21:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:21:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:21:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 23:21:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 23:21:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 23:21:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 23:21:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:21:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:21:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:21:19,788 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:21:19,905 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:21:19,908 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:21:20,207 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:21:20,211 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:21:20,398 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:21:20,398 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:21:20,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:20 BoogieIcfgContainer [2024-11-27 23:21:20,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:21:20,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:21:20,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:21:20,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:21:20,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:21:19" (1/3) ... [2024-11-27 23:21:20,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f1eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:20, skipping insertion in model container [2024-11-27 23:21:20,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:19" (2/3) ... [2024-11-27 23:21:20,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f1eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:20, skipping insertion in model container [2024-11-27 23:21:20,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:20" (3/3) ... [2024-11-27 23:21:20,410 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-27 23:21:20,428 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:21:20,430 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-27 23:21:20,430 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:21:20,499 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:21:20,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2024-11-27 23:21:20,585 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-27 23:21:20,588 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:21:20,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 98 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-27 23:21:20,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2024-11-27 23:21:20,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 73 flow [2024-11-27 23:21:20,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:21:20,632 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;@6be6e327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:21:20,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-27 23:21:20,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:21:20,640 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-27 23:21:20,640 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:21:20,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:20,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:21:20,642 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:20,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 639212003, now seen corresponding path program 1 times [2024-11-27 23:21:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:20,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373522549] [2024-11-27 23:21:20,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373522549] [2024-11-27 23:21:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373522549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:20,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:21:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158619960] [2024-11-27 23:21:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:20,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:20,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:20,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:20,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:20,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-27 23:21:20,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:20,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:20,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:21,271 INFO L124 PetriNetUnfolderBase]: 478/740 cut-off events. [2024-11-27 23:21:21,272 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-27 23:21:21,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 740 events. 478/740 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3344 event pairs, 68 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1350. Up to 631 conditions per place. [2024-11-27 23:21:21,284 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-11-27 23:21:21,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2024-11-27 23:21:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:21:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-27 23:21:21,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-27 23:21:21,300 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2024-11-27 23:21:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2024-11-27 23:21:21,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:21:21,310 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 115 flow [2024-11-27 23:21:21,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-27 23:21:21,317 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-11-27 23:21:21,317 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 115 flow [2024-11-27 23:21:21,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-27 23:21:21,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:21,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:21,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:21:21,318 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:21,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728535, now seen corresponding path program 1 times [2024-11-27 23:21:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350958883] [2024-11-27 23:21:21,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:21,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350958883] [2024-11-27 23:21:21,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350958883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:21,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740002755] [2024-11-27 23:21:21,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:21,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:21,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:21,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:21:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:21,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:21:21,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:21,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740002755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:21:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-27 23:21:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265746695] [2024-11-27 23:21:21,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:21,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:21,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:21,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:21,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-27 23:21:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:21,917 INFO L124 PetriNetUnfolderBase]: 294/495 cut-off events. [2024-11-27 23:21:21,917 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-27 23:21:21,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 495 events. 294/495 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2342 event pairs, 137 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 488. Up to 432 conditions per place. [2024-11-27 23:21:21,923 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2024-11-27 23:21:21,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 155 flow [2024-11-27 23:21:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:21:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-27 23:21:21,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-27 23:21:21,925 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 115 flow. Second operand 3 states and 58 transitions. [2024-11-27 23:21:21,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 155 flow [2024-11-27 23:21:21,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:21,928 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2024-11-27 23:21:21,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-11-27 23:21:21,929 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-27 23:21:21,929 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2024-11-27 23:21:21,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-27 23:21:21,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:21,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:21,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:22,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 23:21:22,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:22,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728536, now seen corresponding path program 1 times [2024-11-27 23:21:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:22,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420554024] [2024-11-27 23:21:22,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:22,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420554024] [2024-11-27 23:21:22,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420554024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116808603] [2024-11-27 23:21:22,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:22,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:22,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:22,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:22,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:21:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:22,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:21:22,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:22,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116808603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:22,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-27 23:21:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412245567] [2024-11-27 23:21:22,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:22,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:22,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:22,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:22,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:22,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-27 23:21:22,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:22,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:22,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:23,002 INFO L124 PetriNetUnfolderBase]: 947/1628 cut-off events. [2024-11-27 23:21:23,003 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-27 23:21:23,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1628 events. 947/1628 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8008 event pairs, 29 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 3712. Up to 731 conditions per place. [2024-11-27 23:21:23,019 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-11-27 23:21:23,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 97 transitions, 469 flow [2024-11-27 23:21:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:21:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:21:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-27 23:21:23,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-27 23:21:23,026 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 7 states and 186 transitions. [2024-11-27 23:21:23,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 97 transitions, 469 flow [2024-11-27 23:21:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 97 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:23,031 INFO L231 Difference]: Finished difference. Result has 43 places, 54 transitions, 318 flow [2024-11-27 23:21:23,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=43, PETRI_TRANSITIONS=54} [2024-11-27 23:21:23,032 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-27 23:21:23,033 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 54 transitions, 318 flow [2024-11-27 23:21:23,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-27 23:21:23,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:23,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:23,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:21:23,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:23,238 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:23,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2061984144, now seen corresponding path program 1 times [2024-11-27 23:21:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:23,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564821896] [2024-11-27 23:21:23,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564821896] [2024-11-27 23:21:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564821896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:21:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401016567] [2024-11-27 23:21:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:23,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:23,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:23,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:23,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:23,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-27 23:21:23,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:23,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:23,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:23,829 INFO L124 PetriNetUnfolderBase]: 1512/2671 cut-off events. [2024-11-27 23:21:23,830 INFO L125 PetriNetUnfolderBase]: For 6560/6560 co-relation queries the response was YES. [2024-11-27 23:21:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8376 conditions, 2671 events. 1512/2671 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14712 event pairs, 98 based on Foata normal form. 131/2594 useless extension candidates. Maximal degree in co-relation 8363. Up to 1247 conditions per place. [2024-11-27 23:21:23,858 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 63 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-11-27 23:21:23,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 88 transitions, 675 flow [2024-11-27 23:21:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:21:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-27 23:21:23,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 23:21:23,862 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 318 flow. Second operand 4 states and 96 transitions. [2024-11-27 23:21:23,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 88 transitions, 675 flow [2024-11-27 23:21:23,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 650 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:23,885 INFO L231 Difference]: Finished difference. Result has 47 places, 64 transitions, 486 flow [2024-11-27 23:21:23,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=47, PETRI_TRANSITIONS=64} [2024-11-27 23:21:23,887 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-27 23:21:23,888 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 64 transitions, 486 flow [2024-11-27 23:21:23,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-27 23:21:23,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:23,888 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:23,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:21:23,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:23,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 373722710, now seen corresponding path program 1 times [2024-11-27 23:21:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042337353] [2024-11-27 23:21:23,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:24,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042337353] [2024-11-27 23:21:24,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042337353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029153789] [2024-11-27 23:21:24,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:24,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:24,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:24,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:24,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:21:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:24,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:21:24,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:24,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:24,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029153789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:24,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:24,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-27 23:21:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238099048] [2024-11-27 23:21:24,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:24,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:21:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:24,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:21:24,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:21:24,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:24,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 64 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-27 23:21:24,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:24,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:25,891 INFO L124 PetriNetUnfolderBase]: 5374/9675 cut-off events. [2024-11-27 23:21:25,892 INFO L125 PetriNetUnfolderBase]: For 41278/41278 co-relation queries the response was YES. [2024-11-27 23:21:25,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32642 conditions, 9675 events. 5374/9675 cut-off events. For 41278/41278 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 63583 event pairs, 322 based on Foata normal form. 683/9649 useless extension candidates. Maximal degree in co-relation 32626. Up to 3382 conditions per place. [2024-11-27 23:21:26,001 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 140 selfloop transitions, 99 changer transitions 0/249 dead transitions. [2024-11-27 23:21:26,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 249 transitions, 2350 flow [2024-11-27 23:21:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:21:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 23:21:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-27 23:21:26,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-27 23:21:26,012 INFO L175 Difference]: Start difference. First operand has 47 places, 64 transitions, 486 flow. Second operand 9 states and 246 transitions. [2024-11-27 23:21:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 249 transitions, 2350 flow [2024-11-27 23:21:26,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 249 transitions, 2345 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:26,129 INFO L231 Difference]: Finished difference. Result has 60 places, 161 transitions, 2029 flow [2024-11-27 23:21:26,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=60, PETRI_TRANSITIONS=161} [2024-11-27 23:21:26,133 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2024-11-27 23:21:26,133 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 161 transitions, 2029 flow [2024-11-27 23:21:26,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-27 23:21:26,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:26,134 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:26,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:26,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:26,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:26,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1092518769, now seen corresponding path program 1 times [2024-11-27 23:21:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216111612] [2024-11-27 23:21:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216111612] [2024-11-27 23:21:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216111612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:26,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:21:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124288174] [2024-11-27 23:21:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:26,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:26,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:26,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:26,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:26,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 161 transitions, 2029 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-27 23:21:26,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:26,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:26,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:28,451 INFO L124 PetriNetUnfolderBase]: 6672/12029 cut-off events. [2024-11-27 23:21:28,451 INFO L125 PetriNetUnfolderBase]: For 84855/84855 co-relation queries the response was YES. [2024-11-27 23:21:28,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47803 conditions, 12029 events. 6672/12029 cut-off events. For 84855/84855 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 82433 event pairs, 248 based on Foata normal form. 91/11310 useless extension candidates. Maximal degree in co-relation 47780. Up to 5722 conditions per place. [2024-11-27 23:21:28,554 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 149 selfloop transitions, 79 changer transitions 0/238 dead transitions. [2024-11-27 23:21:28,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 238 transitions, 3254 flow [2024-11-27 23:21:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:21:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-27 23:21:28,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-27 23:21:28,556 INFO L175 Difference]: Start difference. First operand has 60 places, 161 transitions, 2029 flow. Second operand 5 states and 119 transitions. [2024-11-27 23:21:28,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 238 transitions, 3254 flow [2024-11-27 23:21:28,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 238 transitions, 3189 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:28,707 INFO L231 Difference]: Finished difference. Result has 66 places, 200 transitions, 2859 flow [2024-11-27 23:21:28,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2859, PETRI_PLACES=66, PETRI_TRANSITIONS=200} [2024-11-27 23:21:28,712 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2024-11-27 23:21:28,712 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 200 transitions, 2859 flow [2024-11-27 23:21:28,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-27 23:21:28,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:28,713 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:28,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:21:28,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:28,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1316417993, now seen corresponding path program 1 times [2024-11-27 23:21:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111199455] [2024-11-27 23:21:28,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111199455] [2024-11-27 23:21:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111199455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708167903] [2024-11-27 23:21:28,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:28,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:28,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:28,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:21:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:28,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:21:28,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:28,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:29,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708167903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:29,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-27 23:21:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311822030] [2024-11-27 23:21:29,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:29,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:21:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:29,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:21:29,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:21:29,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 200 transitions, 2859 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-27 23:21:29,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:29,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:34,868 INFO L124 PetriNetUnfolderBase]: 23247/43152 cut-off events. [2024-11-27 23:21:34,868 INFO L125 PetriNetUnfolderBase]: For 404100/404100 co-relation queries the response was YES. [2024-11-27 23:21:34,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169868 conditions, 43152 events. 23247/43152 cut-off events. For 404100/404100 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 361532 event pairs, 1000 based on Foata normal form. 2512/42591 useless extension candidates. Maximal degree in co-relation 169841. Up to 13756 conditions per place. [2024-11-27 23:21:35,367 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 364 selfloop transitions, 459 changer transitions 0/833 dead transitions. [2024-11-27 23:21:35,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 833 transitions, 13135 flow [2024-11-27 23:21:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:21:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 23:21:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-27 23:21:35,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-27 23:21:35,370 INFO L175 Difference]: Start difference. First operand has 66 places, 200 transitions, 2859 flow. Second operand 9 states and 246 transitions. [2024-11-27 23:21:35,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 833 transitions, 13135 flow [2024-11-27 23:21:36,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 833 transitions, 12900 flow, removed 115 selfloop flow, removed 1 redundant places. [2024-11-27 23:21:36,677 INFO L231 Difference]: Finished difference. Result has 79 places, 641 transitions, 11458 flow [2024-11-27 23:21:36,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11458, PETRI_PLACES=79, PETRI_TRANSITIONS=641} [2024-11-27 23:21:36,678 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 44 predicate places. [2024-11-27 23:21:36,679 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 641 transitions, 11458 flow [2024-11-27 23:21:36,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2024-11-27 23:21:36,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:21:36,679 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:36,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:36,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:36,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:21:36,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1220458231, now seen corresponding path program 1 times [2024-11-27 23:21:36,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:36,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748850556] [2024-11-27 23:21:36,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:36,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748850556] [2024-11-27 23:21:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748850556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112324303] [2024-11-27 23:21:37,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:37,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:37,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:37,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:21:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:37,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:21:37,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:37,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112324303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:37,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:37,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-27 23:21:37,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259713449] [2024-11-27 23:21:37,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:37,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:21:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:37,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:21:37,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:21:37,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:21:37,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 641 transitions, 11458 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 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) [2024-11-27 23:21:37,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:21:37,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:21:37,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:21:55,075 INFO L124 PetriNetUnfolderBase]: 52776/99101 cut-off events. [2024-11-27 23:21:55,076 INFO L125 PetriNetUnfolderBase]: For 1495577/1495577 co-relation queries the response was YES. [2024-11-27 23:21:55,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416474 conditions, 99101 events. 52776/99101 cut-off events. For 1495577/1495577 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 953716 event pairs, 3039 based on Foata normal form. 5362/96194 useless extension candidates. Maximal degree in co-relation 416440. Up to 30314 conditions per place. [2024-11-27 23:21:56,043 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 312 selfloop transitions, 1559 changer transitions 0/1881 dead transitions. [2024-11-27 23:21:56,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 1881 transitions, 34045 flow [2024-11-27 23:21:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:21:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 23:21:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 426 transitions. [2024-11-27 23:21:56,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2024-11-27 23:21:56,046 INFO L175 Difference]: Start difference. First operand has 79 places, 641 transitions, 11458 flow. Second operand 15 states and 426 transitions. [2024-11-27 23:21:56,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 1881 transitions, 34045 flow [2024-11-27 23:22:03,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 1881 transitions, 33422 flow, removed 309 selfloop flow, removed 1 redundant places. [2024-11-27 23:22:03,930 INFO L231 Difference]: Finished difference. Result has 104 places, 1779 transitions, 36607 flow [2024-11-27 23:22:03,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11229, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=36607, PETRI_PLACES=104, PETRI_TRANSITIONS=1779} [2024-11-27 23:22:03,931 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2024-11-27 23:22:03,931 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 1779 transitions, 36607 flow [2024-11-27 23:22:03,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 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) [2024-11-27 23:22:03,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:22:03,932 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:03,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:04,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:04,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-27 23:22:04,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1027200250, now seen corresponding path program 1 times [2024-11-27 23:22:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939874243] [2024-11-27 23:22:04,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:04,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939874243] [2024-11-27 23:22:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939874243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461581021] [2024-11-27 23:22:04,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:04,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:04,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:04,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ba0963-4a92-4f47-bbac-a5ddbc6e9c98/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:22:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:04,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:22:04,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:04,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461581021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:04,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-27 23:22:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417446084] [2024-11-27 23:22:04,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:04,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:22:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:04,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:22:04,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:22:04,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-27 23:22:04,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 1779 transitions, 36607 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 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) [2024-11-27 23:22:04,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:22:04,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-27 23:22:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand