./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.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_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/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_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/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_3e9177db-8462-4426-b2cb-de81c16fe0a0/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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:29:39,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:29:39,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:29:39,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:29:39,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:29:39,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:29:39,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:29:39,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:29:39,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:29:39,530 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:29:39,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:29:39,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:29:39,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:29:39,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:29:39,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:29:39,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:29:39,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:29:39,534 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:39,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:39,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:29:39,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:29:39,536 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:29:39,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:29:39,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:29:39,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:29:39,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:29:39,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:29:39,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:29:39,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:29:39,537 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_3e9177db-8462-4426-b2cb-de81c16fe0a0/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 -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-11-28 04:29:39,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:29:39,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:29:39,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:29:39,873 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:29:39,874 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:29:39,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-28 04:29:42,811 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb84f0f90/a9b55ce21b3341c78b4de789a9b2067f/FLAGf1feccaa4 [2024-11-28 04:29:43,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:29:43,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-28 04:29:43,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb84f0f90/a9b55ce21b3341c78b4de789a9b2067f/FLAGf1feccaa4 [2024-11-28 04:29:43,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb84f0f90/a9b55ce21b3341c78b4de789a9b2067f [2024-11-28 04:29:43,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:29:43,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:29:43,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:29:43,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:29:43,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:29:43,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a473614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43, skipping insertion in model container [2024-11-28 04:29:43,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:29:43,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:29:43,514 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:29:43,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:29:43,571 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:29:43,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43 WrapperNode [2024-11-28 04:29:43,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:29:43,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:29:43,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:29:43,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:29:43,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,615 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 127 [2024-11-28 04:29:43,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:29:43,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:29:43,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:29:43,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:29:43,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,646 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 04:29:43,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,661 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:29:43,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:29:43,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:29:43,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:29:43,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (1/1) ... [2024-11-28 04:29:43,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:43,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:29:43,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:29:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:29:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:29:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:29:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:29:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:29:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:29:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:29:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:29:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:29:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:29:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:29:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:29:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:29:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:29:43,755 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:29:43,896 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:29:43,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:29:44,358 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:29:44,358 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:29:44,711 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:29:44,711 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:29:44,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:29:44 BoogieIcfgContainer [2024-11-28 04:29:44,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:29:44,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:29:44,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:29:44,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:29:44,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:29:43" (1/3) ... [2024-11-28 04:29:44,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2249bd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:29:44, skipping insertion in model container [2024-11-28 04:29:44,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:43" (2/3) ... [2024-11-28 04:29:44,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2249bd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:29:44, skipping insertion in model container [2024-11-28 04:29:44,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:29:44" (3/3) ... [2024-11-28 04:29:44,727 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-11-28 04:29:44,745 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:29:44,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-symm.wvr.c that has 3 procedures, 51 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2024-11-28 04:29:44,747 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:29:44,822 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:29:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 60 transitions, 134 flow [2024-11-28 04:29:44,924 INFO L124 PetriNetUnfolderBase]: 10/58 cut-off events. [2024-11-28 04:29:44,926 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:29:44,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 58 events. 10/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-11-28 04:29:44,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 60 transitions, 134 flow [2024-11-28 04:29:44,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 56 transitions, 121 flow [2024-11-28 04:29:44,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:29:44,971 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;@21d8778f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:29:44,971 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 04:29:44,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:29:44,977 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:29:44,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:29:44,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:44,978 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:29:44,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:44,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 585335, now seen corresponding path program 1 times [2024-11-28 04:29:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423532513] [2024-11-28 04:29:44,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:45,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423532513] [2024-11-28 04:29:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423532513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599244495] [2024-11-28 04:29:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:45,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:45,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:45,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:45,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:45,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:45,776 INFO L124 PetriNetUnfolderBase]: 313/670 cut-off events. [2024-11-28 04:29:45,776 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-28 04:29:45,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 670 events. 313/670 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3557 event pairs, 182 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 1066. Up to 452 conditions per place. [2024-11-28 04:29:45,790 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 35 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-11-28 04:29:45,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 217 flow [2024-11-28 04:29:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-28 04:29:45,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-28 04:29:45,811 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 121 flow. Second operand 4 states and 134 transitions. [2024-11-28 04:29:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 217 flow [2024-11-28 04:29:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:29:45,827 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 176 flow [2024-11-28 04:29:45,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-11-28 04:29:45,835 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-11-28 04:29:45,836 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 176 flow [2024-11-28 04:29:45,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:45,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:45,836 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:29:45,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:29:45,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:45,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 258438824, now seen corresponding path program 1 times [2024-11-28 04:29:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381644432] [2024-11-28 04:29:45,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381644432] [2024-11-28 04:29:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381644432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:46,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297603450] [2024-11-28 04:29:46,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:46,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:46,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:46,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:29:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:46,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:29:46,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:46,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297603450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:46,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:29:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:29:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010279073] [2024-11-28 04:29:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:46,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:29:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:46,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:29:46,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:46,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:46,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:46,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:46,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:46,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:46,600 INFO L124 PetriNetUnfolderBase]: 313/668 cut-off events. [2024-11-28 04:29:46,600 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 04:29:46,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 668 events. 313/668 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3562 event pairs, 182 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 1116. Up to 442 conditions per place. [2024-11-28 04:29:46,610 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 28 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-11-28 04:29:46,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 248 flow [2024-11-28 04:29:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:29:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:29:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-11-28 04:29:46,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-28 04:29:46,616 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 176 flow. Second operand 6 states and 174 transitions. [2024-11-28 04:29:46,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 248 flow [2024-11-28 04:29:46,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:29:46,621 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 192 flow [2024-11-28 04:29:46,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-28 04:29:46,623 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-28 04:29:46,623 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 192 flow [2024-11-28 04:29:46,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:46,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:46,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:29:46,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:46,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:46,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash -578330451, now seen corresponding path program 1 times [2024-11-28 04:29:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:46,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850960679] [2024-11-28 04:29:46,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:46,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850960679] [2024-11-28 04:29:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850960679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637439966] [2024-11-28 04:29:46,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:46,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:46,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:46,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:29:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:47,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:29:47,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:47,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637439966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:47,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:29:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531969310] [2024-11-28 04:29:47,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:47,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:29:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:47,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:29:47,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:29:47,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:47,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:47,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:47,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:47,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:47,570 INFO L124 PetriNetUnfolderBase]: 319/692 cut-off events. [2024-11-28 04:29:47,570 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-28 04:29:47,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 692 events. 319/692 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3763 event pairs, 182 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 1118. Up to 453 conditions per place. [2024-11-28 04:29:47,577 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 33 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-11-28 04:29:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 422 flow [2024-11-28 04:29:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:29:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:29:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-11-28 04:29:47,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-11-28 04:29:47,582 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 192 flow. Second operand 10 states and 284 transitions. [2024-11-28 04:29:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 422 flow [2024-11-28 04:29:47,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 364 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-28 04:29:47,589 INFO L231 Difference]: Finished difference. Result has 66 places, 78 transitions, 332 flow [2024-11-28 04:29:47,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=78} [2024-11-28 04:29:47,590 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-11-28 04:29:47,590 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 78 transitions, 332 flow [2024-11-28 04:29:47,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:47,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:47,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:47,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:29:47,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:47,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:47,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -196415420, now seen corresponding path program 1 times [2024-11-28 04:29:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527107044] [2024-11-28 04:29:47,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527107044] [2024-11-28 04:29:47,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527107044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:47,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662076617] [2024-11-28 04:29:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:47,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:47,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:47,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:47,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-11-28 04:29:47,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 78 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:47,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:47,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-11-28 04:29:47,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:48,259 INFO L124 PetriNetUnfolderBase]: 558/1013 cut-off events. [2024-11-28 04:29:48,260 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-28 04:29:48,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1013 events. 558/1013 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4867 event pairs, 254 based on Foata normal form. 18/769 useless extension candidates. Maximal degree in co-relation 1911. Up to 633 conditions per place. [2024-11-28 04:29:48,269 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 87 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-28 04:29:48,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 582 flow [2024-11-28 04:29:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-28 04:29:48,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-11-28 04:29:48,273 INFO L175 Difference]: Start difference. First operand has 66 places, 78 transitions, 332 flow. Second operand 4 states and 161 transitions. [2024-11-28 04:29:48,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 582 flow [2024-11-28 04:29:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 558 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 04:29:48,280 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 337 flow [2024-11-28 04:29:48,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-11-28 04:29:48,281 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-11-28 04:29:48,281 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 337 flow [2024-11-28 04:29:48,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:48,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:48,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:48,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:29:48,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:48,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1793878343, now seen corresponding path program 1 times [2024-11-28 04:29:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367767138] [2024-11-28 04:29:48,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367767138] [2024-11-28 04:29:48,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367767138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:48,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:48,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:48,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306818372] [2024-11-28 04:29:48,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:48,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:48,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:48,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:48,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:48,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:48,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:48,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:48,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:48,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:48,881 INFO L124 PetriNetUnfolderBase]: 1206/2270 cut-off events. [2024-11-28 04:29:48,882 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2024-11-28 04:29:48,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 2270 events. 1206/2270 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13537 event pairs, 680 based on Foata normal form. 16/1764 useless extension candidates. Maximal degree in co-relation 4433. Up to 862 conditions per place. [2024-11-28 04:29:48,902 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 81 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-28 04:29:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 595 flow [2024-11-28 04:29:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:29:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:29:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-11-28 04:29:48,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-28 04:29:48,904 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 337 flow. Second operand 5 states and 178 transitions. [2024-11-28 04:29:48,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 595 flow [2024-11-28 04:29:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:29:48,913 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 378 flow [2024-11-28 04:29:48,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-11-28 04:29:48,914 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-11-28 04:29:48,914 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 378 flow [2024-11-28 04:29:48,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:48,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:48,915 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:48,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:29:48,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:48,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 409419407, now seen corresponding path program 1 times [2024-11-28 04:29:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122291183] [2024-11-28 04:29:48,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:49,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122291183] [2024-11-28 04:29:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122291183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:49,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792019327] [2024-11-28 04:29:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:49,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:49,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:49,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:49,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-11-28 04:29:49,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:49,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:49,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-11-28 04:29:49,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:49,472 INFO L124 PetriNetUnfolderBase]: 1703/2931 cut-off events. [2024-11-28 04:29:49,472 INFO L125 PetriNetUnfolderBase]: For 513/553 co-relation queries the response was YES. [2024-11-28 04:29:49,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 2931 events. 1703/2931 cut-off events. For 513/553 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16055 event pairs, 770 based on Foata normal form. 50/2444 useless extension candidates. Maximal degree in co-relation 6036. Up to 1824 conditions per place. [2024-11-28 04:29:49,499 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 91 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-11-28 04:29:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 662 flow [2024-11-28 04:29:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-28 04:29:49,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-28 04:29:49,502 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 378 flow. Second operand 4 states and 159 transitions. [2024-11-28 04:29:49,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 662 flow [2024-11-28 04:29:49,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 117 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:29:49,509 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 406 flow [2024-11-28 04:29:49,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-11-28 04:29:49,513 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-11-28 04:29:49,513 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 406 flow [2024-11-28 04:29:49,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:49,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:49,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:49,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:29:49,513 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:49,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 224346854, now seen corresponding path program 1 times [2024-11-28 04:29:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:49,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718012225] [2024-11-28 04:29:49,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718012225] [2024-11-28 04:29:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718012225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253883641] [2024-11-28 04:29:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:49,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:49,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:49,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:49,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:49,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:49,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:49,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:49,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:50,425 INFO L124 PetriNetUnfolderBase]: 3198/5792 cut-off events. [2024-11-28 04:29:50,425 INFO L125 PetriNetUnfolderBase]: For 2142/2150 co-relation queries the response was YES. [2024-11-28 04:29:50,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12907 conditions, 5792 events. 3198/5792 cut-off events. For 2142/2150 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 38319 event pairs, 1820 based on Foata normal form. 102/5158 useless extension candidates. Maximal degree in co-relation 12806. Up to 2199 conditions per place. [2024-11-28 04:29:50,485 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 105 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-11-28 04:29:50,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 825 flow [2024-11-28 04:29:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:29:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:29:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-11-28 04:29:50,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-11-28 04:29:50,488 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 406 flow. Second operand 5 states and 184 transitions. [2024-11-28 04:29:50,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 825 flow [2024-11-28 04:29:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:29:50,504 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 470 flow [2024-11-28 04:29:50,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-28 04:29:50,507 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-11-28 04:29:50,507 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 470 flow [2024-11-28 04:29:50,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:50,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:50,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:50,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:29:50,508 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:50,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 161104218, now seen corresponding path program 1 times [2024-11-28 04:29:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376905613] [2024-11-28 04:29:50,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:50,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376905613] [2024-11-28 04:29:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376905613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365462809] [2024-11-28 04:29:50,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:50,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:50,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:50,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:29:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:50,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:29:50,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:29:50,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365462809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:50,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:29:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-28 04:29:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299595485] [2024-11-28 04:29:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:50,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:29:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:50,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:29:50,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:50,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2024-11-28 04:29:50,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:50,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:50,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2024-11-28 04:29:50,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:51,472 INFO L124 PetriNetUnfolderBase]: 2858/5340 cut-off events. [2024-11-28 04:29:51,472 INFO L125 PetriNetUnfolderBase]: For 1973/1981 co-relation queries the response was YES. [2024-11-28 04:29:51,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11528 conditions, 5340 events. 2858/5340 cut-off events. For 1973/1981 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 35862 event pairs, 1674 based on Foata normal form. 100/4782 useless extension candidates. Maximal degree in co-relation 11425. Up to 3910 conditions per place. [2024-11-28 04:29:51,538 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 61 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-28 04:29:51,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 566 flow [2024-11-28 04:29:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:29:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:29:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-28 04:29:51,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-28 04:29:51,540 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 470 flow. Second operand 3 states and 106 transitions. [2024-11-28 04:29:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 566 flow [2024-11-28 04:29:51,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 546 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 04:29:51,556 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 424 flow [2024-11-28 04:29:51,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-28 04:29:51,558 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-11-28 04:29:51,560 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 424 flow [2024-11-28 04:29:51,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:51,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:51,560 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:51,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:51,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:51,761 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:51,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -96776578, now seen corresponding path program 1 times [2024-11-28 04:29:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089132978] [2024-11-28 04:29:51,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:29:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089132978] [2024-11-28 04:29:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089132978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:51,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618439216] [2024-11-28 04:29:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:51,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:51,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:51,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:51,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-28 04:29:51,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:51,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:51,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-28 04:29:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:52,442 INFO L124 PetriNetUnfolderBase]: 2242/4134 cut-off events. [2024-11-28 04:29:52,443 INFO L125 PetriNetUnfolderBase]: For 1007/1019 co-relation queries the response was YES. [2024-11-28 04:29:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9108 conditions, 4134 events. 2242/4134 cut-off events. For 1007/1019 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 25727 event pairs, 1242 based on Foata normal form. 0/3716 useless extension candidates. Maximal degree in co-relation 9087. Up to 2113 conditions per place. [2024-11-28 04:29:52,482 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 109 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-11-28 04:29:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 138 transitions, 849 flow [2024-11-28 04:29:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:29:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:29:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-11-28 04:29:52,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-28 04:29:52,484 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 424 flow. Second operand 6 states and 228 transitions. [2024-11-28 04:29:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 138 transitions, 849 flow [2024-11-28 04:29:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 138 transitions, 848 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:29:52,493 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 457 flow [2024-11-28 04:29:52,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-28 04:29:52,495 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-11-28 04:29:52,496 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 457 flow [2024-11-28 04:29:52,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:52,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:52,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:52,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:29:52,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:52,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1697707497, now seen corresponding path program 1 times [2024-11-28 04:29:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853854447] [2024-11-28 04:29:52,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:52,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853854447] [2024-11-28 04:29:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853854447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077495893] [2024-11-28 04:29:52,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:52,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:52,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:29:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:52,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:29:52,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:29:52,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:52,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077495893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:52,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:29:52,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-28 04:29:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484154827] [2024-11-28 04:29:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:52,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:52,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:52,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:52,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2024-11-28 04:29:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:52,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2024-11-28 04:29:52,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:53,253 INFO L124 PetriNetUnfolderBase]: 2048/3876 cut-off events. [2024-11-28 04:29:53,253 INFO L125 PetriNetUnfolderBase]: For 1711/1715 co-relation queries the response was YES. [2024-11-28 04:29:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8547 conditions, 3876 events. 2048/3876 cut-off events. For 1711/1715 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 24173 event pairs, 1240 based on Foata normal form. 124/3670 useless extension candidates. Maximal degree in co-relation 8523. Up to 2875 conditions per place. [2024-11-28 04:29:53,289 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 57 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-11-28 04:29:53,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 557 flow [2024-11-28 04:29:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-28 04:29:53,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 04:29:53,291 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 457 flow. Second operand 4 states and 130 transitions. [2024-11-28 04:29:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 557 flow [2024-11-28 04:29:53,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 531 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 04:29:53,298 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 417 flow [2024-11-28 04:29:53,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-11-28 04:29:53,300 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-11-28 04:29:53,300 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 417 flow [2024-11-28 04:29:53,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:53,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:53,300 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:53,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:53,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:29:53,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:53,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash -5609400, now seen corresponding path program 1 times [2024-11-28 04:29:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:53,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908677480] [2024-11-28 04:29:53,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:29:53,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908677480] [2024-11-28 04:29:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908677480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157195228] [2024-11-28 04:29:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:53,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:53,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:53,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:53,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-28 04:29:53,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:53,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:53,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-28 04:29:53,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:54,146 INFO L124 PetriNetUnfolderBase]: 1840/3398 cut-off events. [2024-11-28 04:29:54,147 INFO L125 PetriNetUnfolderBase]: For 1122/1126 co-relation queries the response was YES. [2024-11-28 04:29:54,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7614 conditions, 3398 events. 1840/3398 cut-off events. For 1122/1126 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 19994 event pairs, 1072 based on Foata normal form. 0/3118 useless extension candidates. Maximal degree in co-relation 7593. Up to 2151 conditions per place. [2024-11-28 04:29:54,170 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 68 selfloop transitions, 4 changer transitions 32/122 dead transitions. [2024-11-28 04:29:54,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 769 flow [2024-11-28 04:29:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:29:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:29:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-11-28 04:29:54,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-11-28 04:29:54,172 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 417 flow. Second operand 6 states and 219 transitions. [2024-11-28 04:29:54,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 769 flow [2024-11-28 04:29:54,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:29:54,179 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 398 flow [2024-11-28 04:29:54,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-28 04:29:54,180 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-11-28 04:29:54,180 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 398 flow [2024-11-28 04:29:54,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:54,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:54,181 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:29:54,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:29:54,181 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:54,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1971243522, now seen corresponding path program 2 times [2024-11-28 04:29:54,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:54,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116663520] [2024-11-28 04:29:54,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:54,199 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:29:54,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:29:54,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116663520] [2024-11-28 04:29:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116663520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567295027] [2024-11-28 04:29:54,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:54,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:54,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:54,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:54,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:29:54,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:29:54,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:54,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:29:54,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:29:54,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:29:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567295027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:54,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:29:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287369429] [2024-11-28 04:29:54,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:54,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:54,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:54,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:54,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:54,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:54,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:54,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:54,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:54,703 INFO L124 PetriNetUnfolderBase]: 1458/2750 cut-off events. [2024-11-28 04:29:54,704 INFO L125 PetriNetUnfolderBase]: For 1011/1015 co-relation queries the response was YES. [2024-11-28 04:29:54,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 2750 events. 1458/2750 cut-off events. For 1011/1015 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 16165 event pairs, 878 based on Foata normal form. 1/2624 useless extension candidates. Maximal degree in co-relation 6275. Up to 2055 conditions per place. [2024-11-28 04:29:54,726 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 46 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-11-28 04:29:54,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 512 flow [2024-11-28 04:29:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-28 04:29:54,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-28 04:29:54,730 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 398 flow. Second operand 4 states and 122 transitions. [2024-11-28 04:29:54,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 512 flow [2024-11-28 04:29:54,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 497 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 04:29:54,738 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 405 flow [2024-11-28 04:29:54,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-28 04:29:54,741 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-11-28 04:29:54,741 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 405 flow [2024-11-28 04:29:54,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:54,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:54,741 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:54,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:54,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:29:54,942 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:54,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -355070609, now seen corresponding path program 1 times [2024-11-28 04:29:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:54,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228606169] [2024-11-28 04:29:54,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:29:55,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228606169] [2024-11-28 04:29:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228606169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:55,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:55,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:29:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37901351] [2024-11-28 04:29:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:55,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:55,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:55,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:55,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-28 04:29:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:55,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:55,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-28 04:29:55,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:55,447 INFO L124 PetriNetUnfolderBase]: 1155/2161 cut-off events. [2024-11-28 04:29:55,447 INFO L125 PetriNetUnfolderBase]: For 681/685 co-relation queries the response was YES. [2024-11-28 04:29:55,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4848 conditions, 2161 events. 1155/2161 cut-off events. For 681/685 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11756 event pairs, 662 based on Foata normal form. 0/1953 useless extension candidates. Maximal degree in co-relation 4827. Up to 1166 conditions per place. [2024-11-28 04:29:55,461 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 92 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-11-28 04:29:55,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 119 transitions, 727 flow [2024-11-28 04:29:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:29:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:29:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-28 04:29:55,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6566666666666666 [2024-11-28 04:29:55,464 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 405 flow. Second operand 5 states and 197 transitions. [2024-11-28 04:29:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 119 transitions, 727 flow [2024-11-28 04:29:55,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 695 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:29:55,470 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 414 flow [2024-11-28 04:29:55,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2024-11-28 04:29:55,471 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-11-28 04:29:55,472 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 414 flow [2024-11-28 04:29:55,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:55,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:55,472 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-28 04:29:55,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:29:55,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:55,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1049072785, now seen corresponding path program 1 times [2024-11-28 04:29:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553449523] [2024-11-28 04:29:55,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:55,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553449523] [2024-11-28 04:29:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553449523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791850267] [2024-11-28 04:29:55,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:55,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:55,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:55,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:29:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:55,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:29:55,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:55,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791850267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:56,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:56,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 04:29:56,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330741712] [2024-11-28 04:29:56,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:56,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:29:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:56,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:29:56,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:29:56,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:29:56,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 414 flow. Second operand has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:56,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:56,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:29:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:56,728 INFO L124 PetriNetUnfolderBase]: 1092/2136 cut-off events. [2024-11-28 04:29:56,728 INFO L125 PetriNetUnfolderBase]: For 1154/1154 co-relation queries the response was YES. [2024-11-28 04:29:56,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4925 conditions, 2136 events. 1092/2136 cut-off events. For 1154/1154 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11817 event pairs, 662 based on Foata normal form. 12/1968 useless extension candidates. Maximal degree in co-relation 4903. Up to 1539 conditions per place. [2024-11-28 04:29:56,743 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 37 selfloop transitions, 62 changer transitions 0/118 dead transitions. [2024-11-28 04:29:56,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 118 transitions, 864 flow [2024-11-28 04:29:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:29:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:29:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 583 transitions. [2024-11-28 04:29:56,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-28 04:29:56,749 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 414 flow. Second operand 22 states and 583 transitions. [2024-11-28 04:29:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 118 transitions, 864 flow [2024-11-28 04:29:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 835 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 04:29:56,757 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 807 flow [2024-11-28 04:29:56,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=807, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2024-11-28 04:29:56,759 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-11-28 04:29:56,759 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 807 flow [2024-11-28 04:29:56,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:56,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:56,760 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:56,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:29:56,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:29:56,961 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:56,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:56,962 INFO L85 PathProgramCache]: Analyzing trace with hash 881929977, now seen corresponding path program 1 times [2024-11-28 04:29:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:56,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942183393] [2024-11-28 04:29:56,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:29:57,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942183393] [2024-11-28 04:29:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942183393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:57,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:29:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062432117] [2024-11-28 04:29:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:57,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:57,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:57,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-28 04:29:57,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:57,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:57,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-28 04:29:57,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:57,467 INFO L124 PetriNetUnfolderBase]: 989/1901 cut-off events. [2024-11-28 04:29:57,467 INFO L125 PetriNetUnfolderBase]: For 1050/1052 co-relation queries the response was YES. [2024-11-28 04:29:57,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4569 conditions, 1901 events. 989/1901 cut-off events. For 1050/1052 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9933 event pairs, 578 based on Foata normal form. 0/1766 useless extension candidates. Maximal degree in co-relation 4540. Up to 1229 conditions per place. [2024-11-28 04:29:57,480 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 85 selfloop transitions, 13 changer transitions 28/143 dead transitions. [2024-11-28 04:29:57,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 1124 flow [2024-11-28 04:29:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:29:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:29:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-11-28 04:29:57,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-28 04:29:57,482 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 807 flow. Second operand 5 states and 188 transitions. [2024-11-28 04:29:57,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 1124 flow [2024-11-28 04:29:57,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 143 transitions, 966 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-11-28 04:29:57,490 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 655 flow [2024-11-28 04:29:57,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=655, PETRI_PLACES=106, PETRI_TRANSITIONS=115} [2024-11-28 04:29:57,491 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-11-28 04:29:57,491 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 655 flow [2024-11-28 04:29:57,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:57,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:57,491 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:57,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:29:57,491 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:57,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1518885972, now seen corresponding path program 1 times [2024-11-28 04:29:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041684601] [2024-11-28 04:29:57,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:29:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:57,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041684601] [2024-11-28 04:29:57,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041684601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:57,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877747275] [2024-11-28 04:29:57,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:57,583 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:57,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:29:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:57,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:29:57,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:29:57,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:29:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877747275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:57,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:57,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 04:29:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756444996] [2024-11-28 04:29:57,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:57,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:29:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:57,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:29:57,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:29:58,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:29:58,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 115 transitions, 655 flow. Second operand has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:58,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:58,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:29:58,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:59,658 INFO L124 PetriNetUnfolderBase]: 1460/2591 cut-off events. [2024-11-28 04:29:59,658 INFO L125 PetriNetUnfolderBase]: For 1375/1419 co-relation queries the response was YES. [2024-11-28 04:29:59,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6430 conditions, 2591 events. 1460/2591 cut-off events. For 1375/1419 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13833 event pairs, 416 based on Foata normal form. 52/2557 useless extension candidates. Maximal degree in co-relation 6400. Up to 541 conditions per place. [2024-11-28 04:29:59,673 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 160 selfloop transitions, 68 changer transitions 10/252 dead transitions. [2024-11-28 04:29:59,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 252 transitions, 1587 flow [2024-11-28 04:29:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:29:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:29:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 433 transitions. [2024-11-28 04:29:59,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154761904761904 [2024-11-28 04:29:59,676 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 655 flow. Second operand 14 states and 433 transitions. [2024-11-28 04:29:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 252 transitions, 1587 flow [2024-11-28 04:29:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 252 transitions, 1509 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-11-28 04:29:59,690 INFO L231 Difference]: Finished difference. Result has 108 places, 119 transitions, 777 flow [2024-11-28 04:29:59,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=777, PETRI_PLACES=108, PETRI_TRANSITIONS=119} [2024-11-28 04:29:59,691 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-11-28 04:29:59,691 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 119 transitions, 777 flow [2024-11-28 04:29:59,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:59,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:59,692 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:59,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:59,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:29:59,892 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:29:59,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash -853136906, now seen corresponding path program 1 times [2024-11-28 04:29:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441799916] [2024-11-28 04:29:59,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:29:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441799916] [2024-11-28 04:29:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441799916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519859215] [2024-11-28 04:29:59,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:59,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:59,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:59,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:00,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:30:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:00,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:30:00,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:30:00,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:30:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519859215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:00,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 04:30:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494373835] [2024-11-28 04:30:00,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:00,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:30:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:00,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:30:00,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:30:00,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:30:00,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 777 flow. Second operand has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:00,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:00,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:30:00,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:01,727 INFO L124 PetriNetUnfolderBase]: 1351/2420 cut-off events. [2024-11-28 04:30:01,728 INFO L125 PetriNetUnfolderBase]: For 1688/1704 co-relation queries the response was YES. [2024-11-28 04:30:01,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 2420 events. 1351/2420 cut-off events. For 1688/1704 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12564 event pairs, 400 based on Foata normal form. 25/2280 useless extension candidates. Maximal degree in co-relation 6006. Up to 559 conditions per place. [2024-11-28 04:30:01,742 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 96 selfloop transitions, 62 changer transitions 67/238 dead transitions. [2024-11-28 04:30:01,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 238 transitions, 1647 flow [2024-11-28 04:30:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:30:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:30:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 426 transitions. [2024-11-28 04:30:01,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-28 04:30:01,746 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 777 flow. Second operand 14 states and 426 transitions. [2024-11-28 04:30:01,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 238 transitions, 1647 flow [2024-11-28 04:30:01,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 238 transitions, 1562 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 04:30:01,758 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 831 flow [2024-11-28 04:30:01,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=831, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2024-11-28 04:30:01,758 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-28 04:30:01,758 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 831 flow [2024-11-28 04:30:01,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:01,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:30:01,759 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:01,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:01,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:30:01,959 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:30:01,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash -792787956, now seen corresponding path program 1 times [2024-11-28 04:30:01,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:01,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091523744] [2024-11-28 04:30:01,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:30:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091523744] [2024-11-28 04:30:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091523744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865010247] [2024-11-28 04:30:02,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:02,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:02,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:02,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:02,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:30:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:02,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:30:02,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:30:02,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:30:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865010247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:02,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-28 04:30:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313161695] [2024-11-28 04:30:02,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:02,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:30:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:02,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:30:02,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:30:02,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:30:02,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 831 flow. Second operand has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:02,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:02,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:30:02,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:03,767 INFO L124 PetriNetUnfolderBase]: 1651/2877 cut-off events. [2024-11-28 04:30:03,767 INFO L125 PetriNetUnfolderBase]: For 2410/2430 co-relation queries the response was YES. [2024-11-28 04:30:03,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7607 conditions, 2877 events. 1651/2877 cut-off events. For 2410/2430 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14892 event pairs, 554 based on Foata normal form. 52/2869 useless extension candidates. Maximal degree in co-relation 7579. Up to 872 conditions per place. [2024-11-28 04:30:03,780 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 207 selfloop transitions, 61 changer transitions 10/291 dead transitions. [2024-11-28 04:30:03,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 291 transitions, 2260 flow [2024-11-28 04:30:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:30:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 04:30:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 505 transitions. [2024-11-28 04:30:03,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-11-28 04:30:03,782 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 831 flow. Second operand 17 states and 505 transitions. [2024-11-28 04:30:03,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 291 transitions, 2260 flow [2024-11-28 04:30:03,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 291 transitions, 2074 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-28 04:30:03,797 INFO L231 Difference]: Finished difference. Result has 121 places, 144 transitions, 1295 flow [2024-11-28 04:30:03,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1295, PETRI_PLACES=121, PETRI_TRANSITIONS=144} [2024-11-28 04:30:03,797 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-11-28 04:30:03,797 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 144 transitions, 1295 flow [2024-11-28 04:30:03,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:03,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:30:03,798 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:03,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:04,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:30:04,003 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:30:04,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash -686535723, now seen corresponding path program 1 times [2024-11-28 04:30:04,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877766905] [2024-11-28 04:30:04,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:30:04,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877766905] [2024-11-28 04:30:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877766905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829640432] [2024-11-28 04:30:04,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:04,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:30:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:04,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:30:04,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:30:04,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:30:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829640432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:04,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:04,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-28 04:30:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394235524] [2024-11-28 04:30:04,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:04,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:30:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:04,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:30:04,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:30:04,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:30:04,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 144 transitions, 1295 flow. Second operand has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:04,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:04,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:30:04,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:05,896 INFO L124 PetriNetUnfolderBase]: 1874/3255 cut-off events. [2024-11-28 04:30:05,896 INFO L125 PetriNetUnfolderBase]: For 3482/3518 co-relation queries the response was YES. [2024-11-28 04:30:05,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8651 conditions, 3255 events. 1874/3255 cut-off events. For 3482/3518 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16493 event pairs, 653 based on Foata normal form. 33/3086 useless extension candidates. Maximal degree in co-relation 8619. Up to 1163 conditions per place. [2024-11-28 04:30:05,917 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 144 selfloop transitions, 56 changer transitions 75/289 dead transitions. [2024-11-28 04:30:05,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 289 transitions, 2453 flow [2024-11-28 04:30:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:30:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 04:30:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 498 transitions. [2024-11-28 04:30:05,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48823529411764705 [2024-11-28 04:30:05,919 INFO L175 Difference]: Start difference. First operand has 121 places, 144 transitions, 1295 flow. Second operand 17 states and 498 transitions. [2024-11-28 04:30:05,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 289 transitions, 2453 flow [2024-11-28 04:30:05,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 289 transitions, 2365 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-28 04:30:05,940 INFO L231 Difference]: Finished difference. Result has 134 places, 142 transitions, 1363 flow [2024-11-28 04:30:05,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1363, PETRI_PLACES=134, PETRI_TRANSITIONS=142} [2024-11-28 04:30:05,940 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-11-28 04:30:05,941 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 142 transitions, 1363 flow [2024-11-28 04:30:05,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:05,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:30:05,941 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:05,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:30:06,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:06,146 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:30:06,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash -554631229, now seen corresponding path program 2 times [2024-11-28 04:30:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628128450] [2024-11-28 04:30:06,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:06,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:06,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628128450] [2024-11-28 04:30:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628128450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032577299] [2024-11-28 04:30:06,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:06,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:06,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:06,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:30:06,339 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:06,340 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:06,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:30:06,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:06,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032577299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:06,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 04:30:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157693843] [2024-11-28 04:30:06,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:06,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:30:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:06,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:30:06,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:06,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:30:06,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 142 transitions, 1363 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:06,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:06,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:30:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:06,982 INFO L124 PetriNetUnfolderBase]: 1514/2651 cut-off events. [2024-11-28 04:30:06,982 INFO L125 PetriNetUnfolderBase]: For 3722/3734 co-relation queries the response was YES. [2024-11-28 04:30:07,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7785 conditions, 2651 events. 1514/2651 cut-off events. For 3722/3734 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12850 event pairs, 498 based on Foata normal form. 34/2640 useless extension candidates. Maximal degree in co-relation 7750. Up to 1340 conditions per place. [2024-11-28 04:30:07,010 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 145 selfloop transitions, 12 changer transitions 7/179 dead transitions. [2024-11-28 04:30:07,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 179 transitions, 1861 flow [2024-11-28 04:30:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:30:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:30:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-28 04:30:07,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-11-28 04:30:07,011 INFO L175 Difference]: Start difference. First operand has 134 places, 142 transitions, 1363 flow. Second operand 5 states and 158 transitions. [2024-11-28 04:30:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 179 transitions, 1861 flow [2024-11-28 04:30:07,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 179 transitions, 1764 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-11-28 04:30:07,030 INFO L231 Difference]: Finished difference. Result has 119 places, 143 transitions, 1343 flow [2024-11-28 04:30:07,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1343, PETRI_PLACES=119, PETRI_TRANSITIONS=143} [2024-11-28 04:30:07,030 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-11-28 04:30:07,031 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 143 transitions, 1343 flow [2024-11-28 04:30:07,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:07,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:30:07,031 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:07,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:30:07,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:07,235 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:30:07,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -634967251, now seen corresponding path program 2 times [2024-11-28 04:30:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:07,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101510977] [2024-11-28 04:30:07,236 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:07,251 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:07,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101510977] [2024-11-28 04:30:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101510977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423566438] [2024-11-28 04:30:07,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:07,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:07,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:07,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:07,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:30:07,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:07,428 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:07,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:30:07,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:07,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:30:07,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423566438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:07,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:07,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 04:30:07,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525859203] [2024-11-28 04:30:07,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:07,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:30:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:07,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:30:07,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:07,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-28 04:30:07,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 143 transitions, 1343 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:07,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:07,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-28 04:30:07,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:08,012 INFO L124 PetriNetUnfolderBase]: 1516/2645 cut-off events. [2024-11-28 04:30:08,012 INFO L125 PetriNetUnfolderBase]: For 4523/4523 co-relation queries the response was YES. [2024-11-28 04:30:08,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2645 events. 1516/2645 cut-off events. For 4523/4523 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12687 event pairs, 484 based on Foata normal form. 37/2532 useless extension candidates. Maximal degree in co-relation 8018. Up to 1299 conditions per place. [2024-11-28 04:30:08,032 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 80 selfloop transitions, 1 changer transitions 96/180 dead transitions. [2024-11-28 04:30:08,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 180 transitions, 1868 flow [2024-11-28 04:30:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:30:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:30:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-28 04:30:08,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-28 04:30:08,033 INFO L175 Difference]: Start difference. First operand has 119 places, 143 transitions, 1343 flow. Second operand 5 states and 155 transitions. [2024-11-28 04:30:08,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 180 transitions, 1868 flow [2024-11-28 04:30:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 180 transitions, 1845 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 04:30:08,048 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 1049 flow [2024-11-28 04:30:08,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1049, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2024-11-28 04:30:08,049 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-11-28 04:30:08,049 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 1049 flow [2024-11-28 04:30:08,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:08,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:30:08,050 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-28 04:30:08,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:08,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:08,250 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 04:30:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -244082831, now seen corresponding path program 2 times [2024-11-28 04:30:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:08,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661948200] [2024-11-28 04:30:08,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:08,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:08,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:08,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:30:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661948200] [2024-11-28 04:30:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661948200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319831213] [2024-11-28 04:30:08,344 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:08,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:08,346 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:08,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:30:08,457 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:08,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:08,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:30:08,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:30:08,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:30:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319831213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:08,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:30:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272631622] [2024-11-28 04:30:08,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:08,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:30:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:08,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:30:08,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:30:08,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-28 04:30:08,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 1049 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:08,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:08,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-28 04:30:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:30:08,647 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2024-11-28 04:30:08,647 INFO L125 PetriNetUnfolderBase]: For 736/736 co-relation queries the response was YES. [2024-11-28 04:30:08,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 144 events. 12/144 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 357 event pairs, 0 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 766. Up to 56 conditions per place. [2024-11-28 04:30:08,648 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-11-28 04:30:08,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 1189 flow [2024-11-28 04:30:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:30:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:30:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-28 04:30:08,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-11-28 04:30:08,650 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 1049 flow. Second operand 4 states and 95 transitions. [2024-11-28 04:30:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 1189 flow [2024-11-28 04:30:08,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 1004 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-11-28 04:30:08,655 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-11-28 04:30:08,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-11-28 04:30:08,656 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-11-28 04:30:08,656 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-11-28 04:30:08,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:08,659 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2024-11-28 04:30:08,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-11-28 04:30:08,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-11-28 04:30:08,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-11-28 04:30:08,664 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-11-28 04:30:08,664 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-11-28 04:30:08,664 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-11-28 04:30:08,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:08,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:30:08,865 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:08,871 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:30:08,871 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:30:08,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:30:08 BasicIcfg [2024-11-28 04:30:08,880 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:30:08,881 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:30:08,881 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:30:08,881 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:30:08,882 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:29:44" (3/4) ... [2024-11-28 04:30:08,883 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:30:08,886 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 04:30:08,887 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 04:30:08,892 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 136 nodes and edges [2024-11-28 04:30:08,892 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-11-28 04:30:08,893 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-28 04:30:08,893 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 04:30:09,003 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:30:09,003 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:30:09,003 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:30:09,006 INFO L158 Benchmark]: Toolchain (without parser) took 25781.04ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 93.8MB in the beginning and 173.3MB in the end (delta: -79.5MB). Peak memory consumption was 228.6MB. Max. memory is 16.1GB. [2024-11-28 04:30:09,007 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:30:09,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.46ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 81.6MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:30:09,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.95ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:30:09,008 INFO L158 Benchmark]: Boogie Preprocessor took 60.49ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:30:09,011 INFO L158 Benchmark]: RCFGBuilder took 1034.16ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 80.3MB in the end (delta: -2.5MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2024-11-28 04:30:09,011 INFO L158 Benchmark]: TraceAbstraction took 24162.43ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 79.7MB in the beginning and 177.6MB in the end (delta: -97.9MB). Peak memory consumption was 215.4MB. Max. memory is 16.1GB. [2024-11-28 04:30:09,011 INFO L158 Benchmark]: Witness Printer took 122.99ms. Allocated memory is still 427.8MB. Free memory was 177.6MB in the beginning and 173.3MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:30:09,013 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.46ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 81.6MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.95ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.49ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1034.16ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 80.3MB in the end (delta: -2.5MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * TraceAbstraction took 24162.43ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 79.7MB in the beginning and 177.6MB in the end (delta: -97.9MB). Peak memory consumption was 215.4MB. Max. memory is 16.1GB. * Witness Printer took 122.99ms. Allocated memory is still 427.8MB. Free memory was 177.6MB in the beginning and 173.3MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.0s, OverallIterations: 22, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2767 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2527 mSDsluCounter, 2076 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2011 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9614 IncrementalHoareTripleChecker+Invalid, 9779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 65 mSDtfsCounter, 9614 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 389 SyntacticMatches, 11 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=19, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 622 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 2593 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2018 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 45 InterpolantComputations, 12 PerfectInterpolantSequences, 730/975 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:30:09,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e9177db-8462-4426-b2cb-de81c16fe0a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE