./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-theta/exponential-nondet.i --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_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/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_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/exponential-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/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_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/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 f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:06:59,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:07:00,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:07:00,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:07:00,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:07:00,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:07:00,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:07:00,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:07:00,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:07:00,078 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:07:00,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:07:00,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:07:00,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:07:00,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:07:00,080 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:07:00,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:07:00,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:07:00,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:07:00,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:07:00,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:00,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:07:00,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:07:00,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:07:00,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:07:00,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:00,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:07:00,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:07:00,085 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:07:00,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:07:00,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:07:00,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:07:00,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:07:00,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:07:00,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:07:00,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:07:00,087 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_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/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 -> f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae [2024-11-28 05:07:00,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:07:00,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:07:00,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:07:00,411 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:07:00,411 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:07:00,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-28 05:07:03,435 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/data/87ec08515/72fc474e66944a2da949e688d4063754/FLAGd3604fec0 [2024-11-28 05:07:03,873 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:07:03,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-28 05:07:03,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/data/87ec08515/72fc474e66944a2da949e688d4063754/FLAGd3604fec0 [2024-11-28 05:07:03,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/data/87ec08515/72fc474e66944a2da949e688d4063754 [2024-11-28 05:07:03,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:07:03,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:07:03,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:07:03,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:07:03,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:07:03,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:07:03" (1/1) ... [2024-11-28 05:07:03,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f39bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:03, skipping insertion in model container [2024-11-28 05:07:03,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:07:03" (1/1) ... [2024-11-28 05:07:03,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:07:04,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:07:04,356 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:07:04,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:07:04,443 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:07:04,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04 WrapperNode [2024-11-28 05:07:04,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:07:04,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:07:04,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:07:04,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:07:04,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,500 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-11-28 05:07:04,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:07:04,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:07:04,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:07:04,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:07:04,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,524 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 05:07:04,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,529 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:07:04,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:07:04,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:07:04,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:07:04,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (1/1) ... [2024-11-28 05:07:04,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:04,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:07:04,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:07:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:07:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-28 05:07:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-28 05:07:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-28 05:07:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-28 05:07:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:07:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:07:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:07:04,605 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 05:07:04,725 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:07:04,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:07:04,987 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:07:04,990 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:07:05,161 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:07:05,165 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:07:05,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:05 BoogieIcfgContainer [2024-11-28 05:07:05,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:07:05,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:07:05,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:07:05,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:07:05,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:07:03" (1/3) ... [2024-11-28 05:07:05,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dab7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:05, skipping insertion in model container [2024-11-28 05:07:05,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:04" (2/3) ... [2024-11-28 05:07:05,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dab7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:05, skipping insertion in model container [2024-11-28 05:07:05,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:05" (3/3) ... [2024-11-28 05:07:05,181 INFO L128 eAbstractionObserver]: Analyzing ICFG exponential-nondet.i [2024-11-28 05:07:05,195 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:07:05,197 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG exponential-nondet.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-28 05:07:05,197 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:07:05,262 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:07:05,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-11-28 05:07:05,363 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-28 05:07:05,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:05,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 2/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-28 05:07:05,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-11-28 05:07:05,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 53 flow [2024-11-28 05:07:05,382 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:05,426 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;@c4816d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:05,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:07:05,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:07:05,431 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 05:07:05,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:05,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:05,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:07:05,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:05,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash 7447609, now seen corresponding path program 1 times [2024-11-28 05:07:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595581841] [2024-11-28 05:07:05,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:05,706 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 05:07:05,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:05,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595581841] [2024-11-28 05:07:05,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595581841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:05,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207495268] [2024-11-28 05:07:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:05,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:05,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:05,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:05,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:05,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-28 05:07:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 05:07:05,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:05,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-28 05:07:05,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:05,932 INFO L124 PetriNetUnfolderBase]: 44/128 cut-off events. [2024-11-28 05:07:05,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:05,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 128 events. 44/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 551 event pairs, 31 based on Foata normal form. 5/116 useless extension candidates. Maximal degree in co-relation 202. Up to 79 conditions per place. [2024-11-28 05:07:05,940 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-11-28 05:07:05,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 105 flow [2024-11-28 05:07:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-28 05:07:05,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-28 05:07:05,961 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 53 flow. Second operand 4 states and 62 transitions. [2024-11-28 05:07:05,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 105 flow [2024-11-28 05:07:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:05,972 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 74 flow [2024-11-28 05:07:05,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-11-28 05:07:05,983 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-28 05:07:05,985 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 74 flow [2024-11-28 05:07:05,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 05:07:05,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:05,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:05,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:07:05,987 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:05,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1475260452, now seen corresponding path program 1 times [2024-11-28 05:07:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834976911] [2024-11-28 05:07:05,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:06,097 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 05:07:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834976911] [2024-11-28 05:07:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834976911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:06,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833438176] [2024-11-28 05:07:06,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:06,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:06,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:06,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:06,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-28 05:07:06,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 05:07:06,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:06,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-28 05:07:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:06,179 INFO L124 PetriNetUnfolderBase]: 40/118 cut-off events. [2024-11-28 05:07:06,181 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 05:07:06,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 118 events. 40/118 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 482 event pairs, 17 based on Foata normal form. 4/117 useless extension candidates. Maximal degree in co-relation 220. Up to 70 conditions per place. [2024-11-28 05:07:06,184 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-28 05:07:06,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 110 flow [2024-11-28 05:07:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-28 05:07:06,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-28 05:07:06,188 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 74 flow. Second operand 4 states and 56 transitions. [2024-11-28 05:07:06,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 110 flow [2024-11-28 05:07:06,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:06,191 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 76 flow [2024-11-28 05:07:06,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-28 05:07:06,193 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-11-28 05:07:06,194 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 76 flow [2024-11-28 05:07:06,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 05:07:06,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:06,195 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:07:06,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:07:06,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:06,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1466348213, now seen corresponding path program 1 times [2024-11-28 05:07:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712483101] [2024-11-28 05:07:06,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:07:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:06,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712483101] [2024-11-28 05:07:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712483101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:06,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:06,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:06,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905459544] [2024-11-28 05:07:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:06,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:06,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:06,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:06,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2024-11-28 05:07:06,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 05:07:06,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:06,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2024-11-28 05:07:06,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:06,474 INFO L124 PetriNetUnfolderBase]: 35/108 cut-off events. [2024-11-28 05:07:06,475 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-28 05:07:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 108 events. 35/108 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 417 event pairs, 7 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 214. Up to 53 conditions per place. [2024-11-28 05:07:06,478 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 15 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2024-11-28 05:07:06,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 122 flow [2024-11-28 05:07:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-28 05:07:06,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-28 05:07:06,480 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 76 flow. Second operand 4 states and 65 transitions. [2024-11-28 05:07:06,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 122 flow [2024-11-28 05:07:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:06,482 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 80 flow [2024-11-28 05:07:06,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-11-28 05:07:06,483 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-11-28 05:07:06,483 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 80 flow [2024-11-28 05:07:06,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 05:07:06,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:06,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:06,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:07:06,484 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:06,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1511566493, now seen corresponding path program 1 times [2024-11-28 05:07:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:06,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51825376] [2024-11-28 05:07:06,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:06,583 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 05:07:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:06,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51825376] [2024-11-28 05:07:06,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51825376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:06,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:06,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248533308] [2024-11-28 05:07:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:06,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:06,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:06,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:06,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-28 05:07:06,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 05:07:06,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-28 05:07:06,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:06,692 INFO L124 PetriNetUnfolderBase]: 35/101 cut-off events. [2024-11-28 05:07:06,692 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 05:07:06,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 101 events. 35/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 361 event pairs, 3 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 216. Up to 53 conditions per place. [2024-11-28 05:07:06,694 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 16 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-28 05:07:06,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 126 flow [2024-11-28 05:07:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-28 05:07:06,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-28 05:07:06,695 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 80 flow. Second operand 4 states and 58 transitions. [2024-11-28 05:07:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 126 flow [2024-11-28 05:07:06,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 120 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:06,699 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 78 flow [2024-11-28 05:07:06,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-28 05:07:06,700 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-11-28 05:07:06,700 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 78 flow [2024-11-28 05:07:06,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 05:07:06,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:06,701 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:06,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:07:06,701 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:06,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 916461391, now seen corresponding path program 1 times [2024-11-28 05:07:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321491683] [2024-11-28 05:07:06,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:06,726 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:07:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:06,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:07:06,761 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:07:06,762 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 05:07:06,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-28 05:07:06,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-28 05:07:06,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-28 05:07:06,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-28 05:07:06,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:07:06,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:07:06,766 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 05:07:06,770 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:07:06,770 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 05:07:06,816 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:07:06,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 86 flow [2024-11-28 05:07:06,844 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2024-11-28 05:07:06,847 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:07:06,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 54 events. 3/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-11-28 05:07:06,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 33 transitions, 86 flow [2024-11-28 05:07:06,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 80 flow [2024-11-28 05:07:06,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:06,850 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;@c4816d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:06,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:07:06,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:07:06,857 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 05:07:06,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:06,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:06,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:07:06,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:06,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 8463481, now seen corresponding path program 1 times [2024-11-28 05:07:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135154008] [2024-11-28 05:07:06,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:06,927 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 05:07:06,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135154008] [2024-11-28 05:07:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135154008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:06,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115117466] [2024-11-28 05:07:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:06,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:06,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:06,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-28 05:07:06,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 05:07:06,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:06,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-28 05:07:06,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:07,190 INFO L124 PetriNetUnfolderBase]: 392/768 cut-off events. [2024-11-28 05:07:07,191 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 05:07:07,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 768 events. 392/768 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4410 event pairs, 299 based on Foata normal form. 21/708 useless extension candidates. Maximal degree in co-relation 592. Up to 507 conditions per place. [2024-11-28 05:07:07,202 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-28 05:07:07,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 156 flow [2024-11-28 05:07:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-28 05:07:07,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-28 05:07:07,205 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 80 flow. Second operand 4 states and 86 transitions. [2024-11-28 05:07:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 156 flow [2024-11-28 05:07:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:07,207 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 101 flow [2024-11-28 05:07:07,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-11-28 05:07:07,208 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-28 05:07:07,208 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 101 flow [2024-11-28 05:07:07,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 05:07:07,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:07,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:07,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:07:07,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:07,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1270608150, now seen corresponding path program 1 times [2024-11-28 05:07:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203150828] [2024-11-28 05:07:07,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:07,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:07,293 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 05:07:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:07,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203150828] [2024-11-28 05:07:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203150828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587234229] [2024-11-28 05:07:07,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:07,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:07,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:07,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:07,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-28 05:07:07,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 05:07:07,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:07,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-28 05:07:07,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:07,482 INFO L124 PetriNetUnfolderBase]: 356/698 cut-off events. [2024-11-28 05:07:07,482 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-28 05:07:07,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 698 events. 356/698 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3905 event pairs, 165 based on Foata normal form. 20/689 useless extension candidates. Maximal degree in co-relation 855. Up to 450 conditions per place. [2024-11-28 05:07:07,491 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 20 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-28 05:07:07,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 153 flow [2024-11-28 05:07:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-28 05:07:07,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-28 05:07:07,495 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 101 flow. Second operand 4 states and 78 transitions. [2024-11-28 05:07:07,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 153 flow [2024-11-28 05:07:07,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:07,502 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 103 flow [2024-11-28 05:07:07,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-28 05:07:07,504 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-28 05:07:07,506 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 103 flow [2024-11-28 05:07:07,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 05:07:07,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:07,506 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:07:07,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:07:07,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:07,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1267243764, now seen corresponding path program 1 times [2024-11-28 05:07:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293198882] [2024-11-28 05:07:07,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:07:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293198882] [2024-11-28 05:07:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293198882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:07,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:07,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487501810] [2024-11-28 05:07:07,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:07,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:07,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:07,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:07,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-28 05:07:07,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 05:07:07,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:07,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-28 05:07:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:07,806 INFO L124 PetriNetUnfolderBase]: 319/668 cut-off events. [2024-11-28 05:07:07,806 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-28 05:07:07,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 668 events. 319/668 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3731 event pairs, 131 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 818. Up to 481 conditions per place. [2024-11-28 05:07:07,812 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 22 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2024-11-28 05:07:07,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 173 flow [2024-11-28 05:07:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-28 05:07:07,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 05:07:07,813 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 103 flow. Second operand 4 states and 88 transitions. [2024-11-28 05:07:07,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 173 flow [2024-11-28 05:07:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:07,817 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 111 flow [2024-11-28 05:07:07,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-28 05:07:07,817 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-28 05:07:07,818 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 111 flow [2024-11-28 05:07:07,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 05:07:07,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:07,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:07,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:07:07,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:07,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash -734146704, now seen corresponding path program 1 times [2024-11-28 05:07:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:07,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952436141] [2024-11-28 05:07:07,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:07,863 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 05:07:07,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952436141] [2024-11-28 05:07:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952436141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:07,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:07,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:07,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413248993] [2024-11-28 05:07:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:07,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:07,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:07,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:07,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-28 05:07:07,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 05:07:07,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:07,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-28 05:07:07,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:08,035 INFO L124 PetriNetUnfolderBase]: 351/695 cut-off events. [2024-11-28 05:07:08,036 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-28 05:07:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 695 events. 351/695 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3816 event pairs, 143 based on Foata normal form. 4/686 useless extension candidates. Maximal degree in co-relation 895. Up to 529 conditions per place. [2024-11-28 05:07:08,043 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-28 05:07:08,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 179 flow [2024-11-28 05:07:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-28 05:07:08,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-28 05:07:08,046 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 111 flow. Second operand 4 states and 82 transitions. [2024-11-28 05:07:08,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 179 flow [2024-11-28 05:07:08,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:08,050 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 123 flow [2024-11-28 05:07:08,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-11-28 05:07:08,052 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-28 05:07:08,053 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 123 flow [2024-11-28 05:07:08,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 05:07:08,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:08,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:08,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:07:08,055 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:08,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:08,055 INFO L85 PathProgramCache]: Analyzing trace with hash 575027625, now seen corresponding path program 1 times [2024-11-28 05:07:08,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:08,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374139804] [2024-11-28 05:07:08,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:08,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:08,225 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 05:07:08,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374139804] [2024-11-28 05:07:08,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374139804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579318872] [2024-11-28 05:07:08,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:08,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:08,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:08,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:07:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:08,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:07:08,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:08,499 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 05:07:08,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579318872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2024-11-28 05:07:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083007404] [2024-11-28 05:07:08,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:08,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:08,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:08,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:07:08,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-28 05:07:08,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 05:07:08,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:08,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-28 05:07:08,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:08,888 INFO L124 PetriNetUnfolderBase]: 407/735 cut-off events. [2024-11-28 05:07:08,888 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-11-28 05:07:08,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 735 events. 407/735 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3881 event pairs, 47 based on Foata normal form. 4/710 useless extension candidates. Maximal degree in co-relation 940. Up to 401 conditions per place. [2024-11-28 05:07:08,900 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 4 changer transitions 9/54 dead transitions. [2024-11-28 05:07:08,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 259 flow [2024-11-28 05:07:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:07:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-28 05:07:08,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-28 05:07:08,902 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 123 flow. Second operand 8 states and 138 transitions. [2024-11-28 05:07:08,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 259 flow [2024-11-28 05:07:08,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:08,906 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 137 flow [2024-11-28 05:07:08,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=137, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2024-11-28 05:07:08,908 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-11-28 05:07:08,908 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 137 flow [2024-11-28 05:07:08,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 05:07:08,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:08,908 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:08,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:07:09,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:09,109 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:09,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:09,110 INFO L85 PathProgramCache]: Analyzing trace with hash 570350449, now seen corresponding path program 1 times [2024-11-28 05:07:09,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:09,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577301623] [2024-11-28 05:07:09,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:09,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:09,246 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 05:07:09,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577301623] [2024-11-28 05:07:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577301623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:09,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501418332] [2024-11-28 05:07:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:09,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:09,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:09,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:07:09,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-28 05:07:09,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:07:09,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:09,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-28 05:07:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:09,449 INFO L124 PetriNetUnfolderBase]: 299/587 cut-off events. [2024-11-28 05:07:09,452 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-11-28 05:07:09,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 587 events. 299/587 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3027 event pairs, 15 based on Foata normal form. 16/598 useless extension candidates. Maximal degree in co-relation 1136. Up to 305 conditions per place. [2024-11-28 05:07:09,458 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 30 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-11-28 05:07:09,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 233 flow [2024-11-28 05:07:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:07:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-28 05:07:09,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2024-11-28 05:07:09,460 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 137 flow. Second operand 6 states and 118 transitions. [2024-11-28 05:07:09,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 233 flow [2024-11-28 05:07:09,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 217 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-28 05:07:09,465 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 127 flow [2024-11-28 05:07:09,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2024-11-28 05:07:09,466 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2024-11-28 05:07:09,466 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 127 flow [2024-11-28 05:07:09,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:07:09,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:09,466 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:09,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:07:09,466 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:09,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1649023671, now seen corresponding path program 1 times [2024-11-28 05:07:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:09,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97473915] [2024-11-28 05:07:09,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:09,486 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:07:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:09,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:07:09,505 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-28 05:07:09,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:07:09,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:07:09,505 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:09,506 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:07:09,506 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 05:07:09,549 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:07:09,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 118 flow [2024-11-28 05:07:09,562 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-11-28 05:07:09,562 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 05:07:09,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 76 events. 4/76 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2024-11-28 05:07:09,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 118 flow [2024-11-28 05:07:09,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 111 flow [2024-11-28 05:07:09,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:09,565 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;@c4816d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:09,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:07:09,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:07:09,568 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 05:07:09,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:09,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:09,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:07:09,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:09,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 9725625, now seen corresponding path program 1 times [2024-11-28 05:07:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694491184] [2024-11-28 05:07:09,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:09,617 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 05:07:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694491184] [2024-11-28 05:07:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694491184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:09,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:09,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727419885] [2024-11-28 05:07:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:09,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:09,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:09,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:09,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:09,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 05:07:09,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:10,179 INFO L124 PetriNetUnfolderBase]: 2488/4032 cut-off events. [2024-11-28 05:07:10,179 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-28 05:07:10,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7694 conditions, 4032 events. 2488/4032 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25572 event pairs, 1947 based on Foata normal form. 85/3779 useless extension candidates. Maximal degree in co-relation 3368. Up to 2795 conditions per place. [2024-11-28 05:07:10,217 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 33 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-28 05:07:10,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 211 flow [2024-11-28 05:07:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-28 05:07:10,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-28 05:07:10,219 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 111 flow. Second operand 4 states and 110 transitions. [2024-11-28 05:07:10,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 211 flow [2024-11-28 05:07:10,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 206 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:10,222 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 128 flow [2024-11-28 05:07:10,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2024-11-28 05:07:10,223 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-28 05:07:10,223 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 128 flow [2024-11-28 05:07:10,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 05:07:10,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:10,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:10,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:07:10,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:10,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1975773952, now seen corresponding path program 1 times [2024-11-28 05:07:10,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:10,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119332478] [2024-11-28 05:07:10,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:10,263 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 05:07:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119332478] [2024-11-28 05:07:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119332478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492354561] [2024-11-28 05:07:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:10,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:10,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:10,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:10,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:10,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 05:07:10,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:10,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:10,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:10,731 INFO L124 PetriNetUnfolderBase]: 2260/3678 cut-off events. [2024-11-28 05:07:10,731 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-11-28 05:07:10,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 3678 events. 2260/3678 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23137 event pairs, 1237 based on Foata normal form. 84/3636 useless extension candidates. Maximal degree in co-relation 4667. Up to 2482 conditions per place. [2024-11-28 05:07:10,764 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-28 05:07:10,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 196 flow [2024-11-28 05:07:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-28 05:07:10,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-28 05:07:10,766 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 128 flow. Second operand 4 states and 100 transitions. [2024-11-28 05:07:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 196 flow [2024-11-28 05:07:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:10,784 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 130 flow [2024-11-28 05:07:10,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-11-28 05:07:10,786 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-28 05:07:10,786 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 130 flow [2024-11-28 05:07:10,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 05:07:10,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:10,787 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:07:10,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:07:10,787 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:10,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1973590485, now seen corresponding path program 1 times [2024-11-28 05:07:10,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:10,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662469093] [2024-11-28 05:07:10,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:10,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:07:10,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:10,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662469093] [2024-11-28 05:07:10,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662469093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:10,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:10,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:10,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818973453] [2024-11-28 05:07:10,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:10,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:10,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:10,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:10,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-11-28 05:07:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 05:07:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-11-28 05:07:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:11,383 INFO L124 PetriNetUnfolderBase]: 2031/3484 cut-off events. [2024-11-28 05:07:11,383 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-28 05:07:11,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7312 conditions, 3484 events. 2031/3484 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22295 event pairs, 1203 based on Foata normal form. 1/3401 useless extension candidates. Maximal degree in co-relation 4338. Up to 2769 conditions per place. [2024-11-28 05:07:11,410 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2024-11-28 05:07:11,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 208 flow [2024-11-28 05:07:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-28 05:07:11,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-28 05:07:11,412 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 130 flow. Second operand 4 states and 108 transitions. [2024-11-28 05:07:11,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 208 flow [2024-11-28 05:07:11,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:11,419 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 138 flow [2024-11-28 05:07:11,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2024-11-28 05:07:11,420 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-28 05:07:11,420 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 138 flow [2024-11-28 05:07:11,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 05:07:11,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:11,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:11,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:07:11,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1119450691, now seen corresponding path program 1 times [2024-11-28 05:07:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737922795] [2024-11-28 05:07:11,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:11,458 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 05:07:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737922795] [2024-11-28 05:07:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737922795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802255064] [2024-11-28 05:07:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:11,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:11,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:11,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:11,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:11,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 05:07:11,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:11,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:11,899 INFO L124 PetriNetUnfolderBase]: 2255/3701 cut-off events. [2024-11-28 05:07:11,899 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2024-11-28 05:07:11,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 3701 events. 2255/3701 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22948 event pairs, 1343 based on Foata normal form. 4/3623 useless extension candidates. Maximal degree in co-relation 4861. Up to 3073 conditions per place. [2024-11-28 05:07:11,936 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 28 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-28 05:07:11,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 214 flow [2024-11-28 05:07:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-28 05:07:11,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-28 05:07:11,938 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 138 flow. Second operand 4 states and 102 transitions. [2024-11-28 05:07:11,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 214 flow [2024-11-28 05:07:11,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:11,947 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 150 flow [2024-11-28 05:07:11,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-11-28 05:07:11,948 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-28 05:07:11,948 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 150 flow [2024-11-28 05:07:11,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 05:07:11,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:11,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:11,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:07:11,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:11,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1258558052, now seen corresponding path program 1 times [2024-11-28 05:07:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486694941] [2024-11-28 05:07:11,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:12,028 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 05:07:12,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486694941] [2024-11-28 05:07:12,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486694941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698957575] [2024-11-28 05:07:12,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:12,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:12,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:12,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:12,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:07:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:12,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:07:12,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:12,281 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 05:07:12,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698957575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2024-11-28 05:07:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382102816] [2024-11-28 05:07:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:12,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:12,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:07:12,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-28 05:07:12,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 150 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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 05:07:12,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:12,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-28 05:07:12,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:12,929 INFO L124 PetriNetUnfolderBase]: 2695/4125 cut-off events. [2024-11-28 05:07:12,929 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2024-11-28 05:07:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9015 conditions, 4125 events. 2695/4125 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 24158 event pairs, 735 based on Foata normal form. 4/3967 useless extension candidates. Maximal degree in co-relation 5034. Up to 3457 conditions per place. [2024-11-28 05:07:12,967 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 38 selfloop transitions, 4 changer transitions 9/66 dead transitions. [2024-11-28 05:07:12,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 316 flow [2024-11-28 05:07:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:07:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-11-28 05:07:12,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2024-11-28 05:07:12,970 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 150 flow. Second operand 8 states and 178 transitions. [2024-11-28 05:07:12,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 316 flow [2024-11-28 05:07:12,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:12,978 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 170 flow [2024-11-28 05:07:12,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=170, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2024-11-28 05:07:12,979 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-28 05:07:12,979 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 170 flow [2024-11-28 05:07:12,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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 05:07:12,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:12,980 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:12,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:07:13,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:07:13,184 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:13,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash -264247206, now seen corresponding path program 1 times [2024-11-28 05:07:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659365316] [2024-11-28 05:07:13,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:13,253 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 05:07:13,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:13,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659365316] [2024-11-28 05:07:13,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659365316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:13,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:13,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:13,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269614755] [2024-11-28 05:07:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:13,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:13,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:13,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:13,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:07:13,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:13,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 05:07:13,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:13,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:13,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:13,810 INFO L124 PetriNetUnfolderBase]: 2203/3601 cut-off events. [2024-11-28 05:07:13,811 INFO L125 PetriNetUnfolderBase]: For 1102/1102 co-relation queries the response was YES. [2024-11-28 05:07:13,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 3601 events. 2203/3601 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22229 event pairs, 575 based on Foata normal form. 16/3543 useless extension candidates. Maximal degree in co-relation 6774. Up to 2849 conditions per place. [2024-11-28 05:07:13,844 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 38 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-11-28 05:07:13,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 292 flow [2024-11-28 05:07:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:07:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-11-28 05:07:13,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-28 05:07:13,848 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 170 flow. Second operand 6 states and 150 transitions. [2024-11-28 05:07:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 292 flow [2024-11-28 05:07:13,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 278 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-28 05:07:13,865 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 178 flow [2024-11-28 05:07:13,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2024-11-28 05:07:13,866 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-28 05:07:13,866 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 178 flow [2024-11-28 05:07:13,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 05:07:13,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:13,867 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:13,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:07:13,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:13,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -317443469, now seen corresponding path program 1 times [2024-11-28 05:07:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421302550] [2024-11-28 05:07:13,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:13,992 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 05:07:13,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421302550] [2024-11-28 05:07:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421302550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281803771] [2024-11-28 05:07:13,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:13,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:13,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:07:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:14,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:07:14,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:14,124 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 05:07:14,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281803771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 05:07:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855517787] [2024-11-28 05:07:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:14,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:14,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:14,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:07:14,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:14,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 05:07:14,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:14,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:14,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:14,654 INFO L124 PetriNetUnfolderBase]: 2235/3555 cut-off events. [2024-11-28 05:07:14,655 INFO L125 PetriNetUnfolderBase]: For 958/958 co-relation queries the response was YES. [2024-11-28 05:07:14,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8044 conditions, 3555 events. 2235/3555 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21540 event pairs, 1035 based on Foata normal form. 80/3471 useless extension candidates. Maximal degree in co-relation 4796. Up to 1458 conditions per place. [2024-11-28 05:07:14,688 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 46 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-28 05:07:14,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 324 flow [2024-11-28 05:07:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:07:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-28 05:07:14,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-28 05:07:14,690 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 178 flow. Second operand 6 states and 156 transitions. [2024-11-28 05:07:14,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 324 flow [2024-11-28 05:07:14,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 314 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 05:07:14,699 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 174 flow [2024-11-28 05:07:14,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2024-11-28 05:07:14,701 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-28 05:07:14,701 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 174 flow [2024-11-28 05:07:14,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 05:07:14,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:14,703 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:14,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:07:14,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:14,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:14,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1125807263, now seen corresponding path program 1 times [2024-11-28 05:07:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806821343] [2024-11-28 05:07:14,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:14,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:15,026 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 05:07:15,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:15,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806821343] [2024-11-28 05:07:15,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806821343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:15,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:15,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:07:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406598418] [2024-11-28 05:07:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:15,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:15,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:15,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:15,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:07:15,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:15,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 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 05:07:15,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:15,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:15,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:15,488 INFO L124 PetriNetUnfolderBase]: 2011/3259 cut-off events. [2024-11-28 05:07:15,488 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-11-28 05:07:15,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 3259 events. 2011/3259 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19500 event pairs, 63 based on Foata normal form. 64/3281 useless extension candidates. Maximal degree in co-relation 4635. Up to 1601 conditions per place. [2024-11-28 05:07:15,515 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 53 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-28 05:07:15,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 382 flow [2024-11-28 05:07:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:07:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-28 05:07:15,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-11-28 05:07:15,517 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 174 flow. Second operand 8 states and 201 transitions. [2024-11-28 05:07:15,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 382 flow [2024-11-28 05:07:15,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 350 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 05:07:15,527 INFO L231 Difference]: Finished difference. Result has 67 places, 42 transitions, 164 flow [2024-11-28 05:07:15,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=42} [2024-11-28 05:07:15,528 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-11-28 05:07:15,528 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 42 transitions, 164 flow [2024-11-28 05:07:15,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 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 05:07:15,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:15,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:07:15,529 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:15,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1250812640, now seen corresponding path program 1 times [2024-11-28 05:07:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612433859] [2024-11-28 05:07:15,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:15,611 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 05:07:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612433859] [2024-11-28 05:07:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612433859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353900227] [2024-11-28 05:07:15,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:15,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:15,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:15,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:15,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:07:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:15,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:07:15,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:15,732 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 05:07:15,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:15,789 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 05:07:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353900227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:15,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:15,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 05:07:15,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366937308] [2024-11-28 05:07:15,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:15,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:07:15,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:15,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:07:15,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:07:15,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-28 05:07:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 42 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 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 05:07:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-28 05:07:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:16,521 INFO L124 PetriNetUnfolderBase]: 3579/5555 cut-off events. [2024-11-28 05:07:16,521 INFO L125 PetriNetUnfolderBase]: For 2380/2380 co-relation queries the response was YES. [2024-11-28 05:07:16,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12165 conditions, 5555 events. 3579/5555 cut-off events. For 2380/2380 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 33785 event pairs, 1707 based on Foata normal form. 240/5711 useless extension candidates. Maximal degree in co-relation 5420. Up to 2450 conditions per place. [2024-11-28 05:07:16,558 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 72 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2024-11-28 05:07:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 446 flow [2024-11-28 05:07:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:07:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:07:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-11-28 05:07:16,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-28 05:07:16,560 INFO L175 Difference]: Start difference. First operand has 67 places, 42 transitions, 164 flow. Second operand 10 states and 260 transitions. [2024-11-28 05:07:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 446 flow [2024-11-28 05:07:16,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 424 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-28 05:07:16,566 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 200 flow [2024-11-28 05:07:16,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2024-11-28 05:07:16,566 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-28 05:07:16,566 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 200 flow [2024-11-28 05:07:16,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 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 05:07:16,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:16,567 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:16,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:07:16,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:16,771 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:16,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash 430988895, now seen corresponding path program 1 times [2024-11-28 05:07:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288282549] [2024-11-28 05:07:16,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:16,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:16,785 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:07:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:16,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:07:16,798 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:07:16,798 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 05:07:16,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-28 05:07:16,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-28 05:07:16,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-28 05:07:16,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-28 05:07:16,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:07:16,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:07:16,799 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:16,800 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:07:16,800 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 05:07:16,840 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:07:16,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 49 transitions, 154 flow [2024-11-28 05:07:16,851 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2024-11-28 05:07:16,851 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-28 05:07:16,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 98 events. 5/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 166 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2024-11-28 05:07:16,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 49 transitions, 154 flow [2024-11-28 05:07:16,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 47 transitions, 146 flow [2024-11-28 05:07:16,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:16,854 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;@c4816d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:16,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:07:16,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:07:16,855 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 05:07:16,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:16,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:16,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:07:16,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:16,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 11234041, now seen corresponding path program 1 times [2024-11-28 05:07:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783976670] [2024-11-28 05:07:16,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:16,910 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 05:07:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783976670] [2024-11-28 05:07:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783976670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:16,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843032859] [2024-11-28 05:07:16,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:16,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:16,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:16,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:16,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:16,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 05:07:16,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:16,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:16,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:18,562 INFO L124 PetriNetUnfolderBase]: 13688/19904 cut-off events. [2024-11-28 05:07:18,562 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-28 05:07:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 19904 events. 13688/19904 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 131084 event pairs, 10843 based on Foata normal form. 341/18884 useless extension candidates. Maximal degree in co-relation 17384. Up to 14251 conditions per place. [2024-11-28 05:07:18,706 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-28 05:07:18,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 270 flow [2024-11-28 05:07:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-28 05:07:18,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-28 05:07:18,712 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 146 flow. Second operand 4 states and 134 transitions. [2024-11-28 05:07:18,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 270 flow [2024-11-28 05:07:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 257 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:18,724 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 155 flow [2024-11-28 05:07:18,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-11-28 05:07:18,725 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-28 05:07:18,725 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 155 flow [2024-11-28 05:07:18,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 05:07:18,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:18,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:18,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:07:18,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:18,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -326048738, now seen corresponding path program 1 times [2024-11-28 05:07:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249178919] [2024-11-28 05:07:18,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:18,770 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 05:07:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249178919] [2024-11-28 05:07:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249178919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394070671] [2024-11-28 05:07:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:18,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:18,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:18,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:18,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:18,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 05:07:18,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:18,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:18,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:20,880 INFO L124 PetriNetUnfolderBase]: 12436/18312 cut-off events. [2024-11-28 05:07:20,880 INFO L125 PetriNetUnfolderBase]: For 2683/2683 co-relation queries the response was YES. [2024-11-28 05:07:20,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37997 conditions, 18312 events. 12436/18312 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 121657 event pairs, 9591 based on Foata normal form. 340/18143 useless extension candidates. Maximal degree in co-relation 23653. Up to 12658 conditions per place. [2024-11-28 05:07:21,012 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-28 05:07:21,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 56 transitions, 239 flow [2024-11-28 05:07:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-28 05:07:21,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-28 05:07:21,013 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 155 flow. Second operand 4 states and 122 transitions. [2024-11-28 05:07:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 56 transitions, 239 flow [2024-11-28 05:07:21,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 56 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:21,115 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 157 flow [2024-11-28 05:07:21,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-28 05:07:21,116 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-28 05:07:21,116 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 157 flow [2024-11-28 05:07:21,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 05:07:21,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:21,117 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 05:07:21,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:07:21,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:21,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash -333780058, now seen corresponding path program 1 times [2024-11-28 05:07:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529066768] [2024-11-28 05:07:21,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:07:21,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529066768] [2024-11-28 05:07:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529066768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:21,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257718202] [2024-11-28 05:07:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:21,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:21,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:21,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-11-28 05:07:21,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 157 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 05:07:21,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:21,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-11-28 05:07:21,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:22,790 INFO L124 PetriNetUnfolderBase]: 11183/17052 cut-off events. [2024-11-28 05:07:22,791 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-28 05:07:22,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35474 conditions, 17052 events. 11183/17052 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 116067 event pairs, 7795 based on Foata normal form. 1/16718 useless extension candidates. Maximal degree in co-relation 21490. Up to 14225 conditions per place. [2024-11-28 05:07:22,916 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 2 changer transitions 1/55 dead transitions. [2024-11-28 05:07:22,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 55 transitions, 243 flow [2024-11-28 05:07:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-28 05:07:22,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-28 05:07:22,918 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 157 flow. Second operand 4 states and 128 transitions. [2024-11-28 05:07:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 55 transitions, 243 flow [2024-11-28 05:07:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:22,995 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 165 flow [2024-11-28 05:07:22,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2024-11-28 05:07:22,996 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2024-11-28 05:07:22,996 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 165 flow [2024-11-28 05:07:22,996 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 05:07:22,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:22,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:22,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 05:07:22,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:22,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:22,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1517575914, now seen corresponding path program 1 times [2024-11-28 05:07:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468845419] [2024-11-28 05:07:22,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:23,196 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 05:07:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468845419] [2024-11-28 05:07:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468845419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:23,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96006867] [2024-11-28 05:07:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:23,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:23,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:23,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:23,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:23,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 05:07:23,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:23,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:23,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:24,784 INFO L124 PetriNetUnfolderBase]: 12431/18293 cut-off events. [2024-11-28 05:07:24,784 INFO L125 PetriNetUnfolderBase]: For 3020/3020 co-relation queries the response was YES. [2024-11-28 05:07:24,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38643 conditions, 18293 events. 12431/18293 cut-off events. For 3020/3020 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 119166 event pairs, 8703 based on Foata normal form. 4/17964 useless extension candidates. Maximal degree in co-relation 24317. Up to 15809 conditions per place. [2024-11-28 05:07:24,913 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-28 05:07:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 56 transitions, 249 flow [2024-11-28 05:07:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-28 05:07:24,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-28 05:07:24,915 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 165 flow. Second operand 4 states and 122 transitions. [2024-11-28 05:07:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 56 transitions, 249 flow [2024-11-28 05:07:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 56 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:24,987 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 177 flow [2024-11-28 05:07:24,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2024-11-28 05:07:24,988 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2024-11-28 05:07:24,988 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 177 flow [2024-11-28 05:07:24,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 05:07:24,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:24,988 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:24,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 05:07:24,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:24,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash -399480689, now seen corresponding path program 1 times [2024-11-28 05:07:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807556347] [2024-11-28 05:07:24,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:25,074 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 05:07:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:25,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807556347] [2024-11-28 05:07:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807556347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:25,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165284607] [2024-11-28 05:07:25,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:25,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:25,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:25,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:25,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:07:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:25,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:07:25,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:25,299 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 05:07:25,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165284607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:25,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:25,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2024-11-28 05:07:25,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085538997] [2024-11-28 05:07:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:25,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:25,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:25,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:25,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:07:25,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-11-28 05:07:25,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 177 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 05:07:25,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:25,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-11-28 05:07:25,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:27,430 INFO L124 PetriNetUnfolderBase]: 14919/20767 cut-off events. [2024-11-28 05:07:27,430 INFO L125 PetriNetUnfolderBase]: For 3196/3196 co-relation queries the response was YES. [2024-11-28 05:07:27,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44603 conditions, 20767 events. 14919/20767 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 125970 event pairs, 6559 based on Foata normal form. 4/20118 useless extension candidates. Maximal degree in co-relation 25004. Up to 18753 conditions per place. [2024-11-28 05:07:27,731 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 42 selfloop transitions, 4 changer transitions 9/74 dead transitions. [2024-11-28 05:07:27,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 351 flow [2024-11-28 05:07:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:07:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-11-28 05:07:27,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-11-28 05:07:27,732 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 177 flow. Second operand 8 states and 214 transitions. [2024-11-28 05:07:27,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 351 flow [2024-11-28 05:07:27,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:07:27,771 INFO L231 Difference]: Finished difference. Result has 82 places, 51 transitions, 197 flow [2024-11-28 05:07:27,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2024-11-28 05:07:27,771 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2024-11-28 05:07:27,772 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 197 flow [2024-11-28 05:07:27,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 05:07:27,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:27,772 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:27,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:07:27,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:07:27,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:27,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 769330763, now seen corresponding path program 1 times [2024-11-28 05:07:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605946377] [2024-11-28 05:07:27,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:28,039 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 05:07:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605946377] [2024-11-28 05:07:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605946377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666437045] [2024-11-28 05:07:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:28,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:28,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:28,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:07:28,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 05:07:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:29,789 INFO L124 PetriNetUnfolderBase]: 12379/18187 cut-off events. [2024-11-28 05:07:29,789 INFO L125 PetriNetUnfolderBase]: For 5230/5230 co-relation queries the response was YES. [2024-11-28 05:07:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40451 conditions, 18187 events. 12379/18187 cut-off events. For 5230/5230 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 118147 event pairs, 5375 based on Foata normal form. 16/17894 useless extension candidates. Maximal degree in co-relation 33904. Up to 15585 conditions per place. [2024-11-28 05:07:29,941 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-28 05:07:29,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 68 transitions, 327 flow [2024-11-28 05:07:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:07:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-28 05:07:29,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-11-28 05:07:29,947 INFO L175 Difference]: Start difference. First operand has 82 places, 51 transitions, 197 flow. Second operand 6 states and 178 transitions. [2024-11-28 05:07:29,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 68 transitions, 327 flow [2024-11-28 05:07:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 313 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-28 05:07:30,320 INFO L231 Difference]: Finished difference. Result has 80 places, 52 transitions, 205 flow [2024-11-28 05:07:30,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=80, PETRI_TRANSITIONS=52} [2024-11-28 05:07:30,320 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2024-11-28 05:07:30,320 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 52 transitions, 205 flow [2024-11-28 05:07:30,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 05:07:30,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:30,321 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:30,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 05:07:30,321 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:30,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:30,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1272686076, now seen corresponding path program 1 times [2024-11-28 05:07:30,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:30,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117141798] [2024-11-28 05:07:30,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:30,393 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 05:07:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117141798] [2024-11-28 05:07:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117141798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092303045] [2024-11-28 05:07:30,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:30,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:30,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:30,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:30,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:07:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:30,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:07:30,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:30,518 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 05:07:30,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092303045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:30,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 05:07:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274870183] [2024-11-28 05:07:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:30,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:30,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:30,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:07:30,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:30,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 52 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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 05:07:30,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:30,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:30,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:32,139 INFO L124 PetriNetUnfolderBase]: 12411/17891 cut-off events. [2024-11-28 05:07:32,139 INFO L125 PetriNetUnfolderBase]: For 4446/4446 co-relation queries the response was YES. [2024-11-28 05:07:32,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39534 conditions, 17891 events. 12411/17891 cut-off events. For 4446/4446 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 114085 event pairs, 5835 based on Foata normal form. 336/17552 useless extension candidates. Maximal degree in co-relation 23484. Up to 7538 conditions per place. [2024-11-28 05:07:32,291 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 58 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-11-28 05:07:32,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 391 flow [2024-11-28 05:07:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:07:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-11-28 05:07:32,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-28 05:07:32,293 INFO L175 Difference]: Start difference. First operand has 80 places, 52 transitions, 205 flow. Second operand 6 states and 192 transitions. [2024-11-28 05:07:32,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 391 flow [2024-11-28 05:07:32,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 381 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 05:07:32,369 INFO L231 Difference]: Finished difference. Result has 80 places, 51 transitions, 201 flow [2024-11-28 05:07:32,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=80, PETRI_TRANSITIONS=51} [2024-11-28 05:07:32,370 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2024-11-28 05:07:32,370 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 51 transitions, 201 flow [2024-11-28 05:07:32,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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 05:07:32,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:32,371 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:32,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:07:32,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 05:07:32,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:32,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -501573516, now seen corresponding path program 1 times [2024-11-28 05:07:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266359436] [2024-11-28 05:07:32,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:32,655 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 05:07:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:32,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266359436] [2024-11-28 05:07:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266359436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:07:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289281892] [2024-11-28 05:07:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:32,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:32,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:07:32,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 51 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 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 05:07:32,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:32,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:34,647 INFO L124 PetriNetUnfolderBase]: 12187/17571 cut-off events. [2024-11-28 05:07:34,647 INFO L125 PetriNetUnfolderBase]: For 6684/6684 co-relation queries the response was YES. [2024-11-28 05:07:34,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40421 conditions, 17571 events. 12187/17571 cut-off events. For 6684/6684 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 110436 event pairs, 2303 based on Foata normal form. 64/17358 useless extension candidates. Maximal degree in co-relation 25859. Up to 14337 conditions per place. [2024-11-28 05:07:34,778 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 61 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-28 05:07:34,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 445 flow [2024-11-28 05:07:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:07:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-11-28 05:07:34,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6147959183673469 [2024-11-28 05:07:34,780 INFO L175 Difference]: Start difference. First operand has 80 places, 51 transitions, 201 flow. Second operand 8 states and 241 transitions. [2024-11-28 05:07:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 445 flow [2024-11-28 05:07:34,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 417 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 05:07:34,878 INFO L231 Difference]: Finished difference. Result has 84 places, 53 transitions, 223 flow [2024-11-28 05:07:34,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=84, PETRI_TRANSITIONS=53} [2024-11-28 05:07:34,879 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2024-11-28 05:07:34,879 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 53 transitions, 223 flow [2024-11-28 05:07:34,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 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 05:07:34,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:34,880 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:34,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 05:07:34,880 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:34,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -798562336, now seen corresponding path program 1 times [2024-11-28 05:07:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618886540] [2024-11-28 05:07:34,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:34,961 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 05:07:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618886540] [2024-11-28 05:07:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618886540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181542584] [2024-11-28 05:07:34,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:34,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:34,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:07:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:35,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:07:35,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:35,086 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 05:07:35,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:35,138 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 05:07:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181542584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:35,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 05:07:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324300953] [2024-11-28 05:07:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:35,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:07:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:35,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:07:35,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:07:35,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 53 transitions, 223 flow. Second operand has 12 states, 12 states have (on average 23.833333333333332) internal successors, (286), 12 states have internal predecessors, (286), 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 05:07:35,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:35,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:35,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:38,191 INFO L124 PetriNetUnfolderBase]: 19899/28339 cut-off events. [2024-11-28 05:07:38,191 INFO L125 PetriNetUnfolderBase]: For 11950/11950 co-relation queries the response was YES. [2024-11-28 05:07:38,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61727 conditions, 28339 events. 19899/28339 cut-off events. For 11950/11950 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 183269 event pairs, 9579 based on Foata normal form. 1008/29008 useless extension candidates. Maximal degree in co-relation 28150. Up to 12626 conditions per place. [2024-11-28 05:07:38,387 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2024-11-28 05:07:38,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 123 transitions, 581 flow [2024-11-28 05:07:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:07:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:07:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2024-11-28 05:07:38,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-28 05:07:38,389 INFO L175 Difference]: Start difference. First operand has 84 places, 53 transitions, 223 flow. Second operand 10 states and 320 transitions. [2024-11-28 05:07:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 123 transitions, 581 flow [2024-11-28 05:07:38,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 563 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 05:07:38,414 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 263 flow [2024-11-28 05:07:38,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2024-11-28 05:07:38,415 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2024-11-28 05:07:38,415 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 263 flow [2024-11-28 05:07:38,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.833333333333332) internal successors, (286), 12 states have internal predecessors, (286), 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 05:07:38,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:38,415 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:38,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:07:38,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43584c8d-6e4f-4189-abf6-5e0c4e2e7033/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:38,620 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:38,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1074705623, now seen corresponding path program 1 times [2024-11-28 05:07:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:38,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180484007] [2024-11-28 05:07:38,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:38,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:38,802 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 05:07:38,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:38,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180484007] [2024-11-28 05:07:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180484007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:38,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:07:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585725939] [2024-11-28 05:07:38,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:38,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:07:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:38,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:07:38,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:07:38,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-28 05:07:38,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 263 flow. Second operand has 10 states, 10 states have (on average 24.5) internal successors, (245), 10 states have internal predecessors, (245), 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 05:07:38,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:38,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-28 05:07:38,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:41,892 INFO L124 PetriNetUnfolderBase]: 18651/26699 cut-off events. [2024-11-28 05:07:41,892 INFO L125 PetriNetUnfolderBase]: For 17484/17484 co-relation queries the response was YES. [2024-11-28 05:07:42,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63105 conditions, 26699 events. 18651/26699 cut-off events. For 17484/17484 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 170269 event pairs, 255 based on Foata normal form. 256/26806 useless extension candidates. Maximal degree in co-relation 47531. Up to 15617 conditions per place. [2024-11-28 05:07:42,147 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 98 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2024-11-28 05:07:42,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 711 flow [2024-11-28 05:07:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:07:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:07:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-11-28 05:07:42,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6204081632653061 [2024-11-28 05:07:42,148 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 263 flow. Second operand 10 states and 304 transitions. [2024-11-28 05:07:42,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 711 flow [2024-11-28 05:07:42,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 127 transitions, 677 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-28 05:07:42,290 INFO L231 Difference]: Finished difference. Result has 95 places, 58 transitions, 259 flow [2024-11-28 05:07:42,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=95, PETRI_TRANSITIONS=58} [2024-11-28 05:07:42,291 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 31 predicate places. [2024-11-28 05:07:42,291 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 58 transitions, 259 flow [2024-11-28 05:07:42,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.5) internal successors, (245), 10 states have internal predecessors, (245), 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 05:07:42,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:42,292 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:42,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 05:07:42,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:42,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1999941043, now seen corresponding path program 1 times [2024-11-28 05:07:42,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:42,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500783134] [2024-11-28 05:07:42,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:42,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:42,310 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:07:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:07:42,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:07:42,328 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:07:42,328 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 05:07:42,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-28 05:07:42,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-28 05:07:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-28 05:07:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-28 05:07:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-28 05:07:42,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 05:07:42,329 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:42,330 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:07:42,330 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 05:07:42,373 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:07:42,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 57 transitions, 194 flow [2024-11-28 05:07:42,391 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-11-28 05:07:42,392 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-28 05:07:42,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 120 events. 6/120 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 194 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-11-28 05:07:42,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 57 transitions, 194 flow [2024-11-28 05:07:42,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 55 transitions, 185 flow [2024-11-28 05:07:42,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:42,397 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;@c4816d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:42,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:07:42,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:07:42,400 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 05:07:42,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:07:42,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:42,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:07:42,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:42,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash 12988729, now seen corresponding path program 1 times [2024-11-28 05:07:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:42,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756786889] [2024-11-28 05:07:42,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:42,437 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 05:07:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756786889] [2024-11-28 05:07:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756786889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:42,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952986340] [2024-11-28 05:07:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:42,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:42,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:42,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:42,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-28 05:07:42,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 05:07:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-28 05:07:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:51,142 INFO L124 PetriNetUnfolderBase]: 69752/94656 cut-off events. [2024-11-28 05:07:51,142 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-28 05:07:51,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185234 conditions, 94656 events. 69752/94656 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 3490. Compared 636548 event pairs, 55643 based on Foata normal form. 1365/90564 useless extension candidates. Maximal degree in co-relation 85096. Up to 69291 conditions per place. [2024-11-28 05:07:52,211 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 49 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-28 05:07:52,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 333 flow [2024-11-28 05:07:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-28 05:07:52,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-28 05:07:52,212 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 185 flow. Second operand 4 states and 158 transitions. [2024-11-28 05:07:52,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 333 flow [2024-11-28 05:07:52,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 308 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:52,296 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 182 flow [2024-11-28 05:07:52,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2024-11-28 05:07:52,296 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2024-11-28 05:07:52,296 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 182 flow [2024-11-28 05:07:52,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 05:07:52,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:52,296 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:52,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 05:07:52,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:52,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 413858372, now seen corresponding path program 1 times [2024-11-28 05:07:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:52,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572609635] [2024-11-28 05:07:52,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:52,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:52,325 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 05:07:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572609635] [2024-11-28 05:07:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572609635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:52,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772210027] [2024-11-28 05:07:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:52,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:52,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:52,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:52,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-28 05:07:52,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 05:07:52,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:52,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-28 05:07:52,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand