./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/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_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/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_2cedc2db-433b-4c58-9639-09f553c301dd/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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:14:30,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:14:30,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 23:14:30,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:14:30,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:14:31,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:14:31,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:14:31,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:14:31,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:14:31,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:14:31,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:14:31,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:14:31,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:14:31,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:14:31,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:14:31,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:14:31,010 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:14:31,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:14:31,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:14:31,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:14:31,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:14:31,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:14:31,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:14:31,012 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_2cedc2db-433b-4c58-9639-09f553c301dd/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 -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-11-27 23:14:31,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:14:31,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:14:31,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:14:31,317 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:14:31,317 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:14:31,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-27 23:14:34,355 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/data/7fb799050/4cf7db564ab64804a11aa2ef9aab241d/FLAGf0c98c16d [2024-11-27 23:14:34,735 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:14:34,736 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-27 23:14:34,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/data/7fb799050/4cf7db564ab64804a11aa2ef9aab241d/FLAGf0c98c16d [2024-11-27 23:14:34,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/data/7fb799050/4cf7db564ab64804a11aa2ef9aab241d [2024-11-27 23:14:34,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:14:34,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:14:34,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:14:34,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:14:34,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:14:34,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:14:34" (1/1) ... [2024-11-27 23:14:34,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390559c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:34, skipping insertion in model container [2024-11-27 23:14:34,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:14:34" (1/1) ... [2024-11-27 23:14:35,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:14:35,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:14:35,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:14:35,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:14:35,612 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:14:35,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35 WrapperNode [2024-11-27 23:14:35,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:14:35,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:14:35,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:14:35,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:14:35,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,658 INFO L138 Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2024-11-27 23:14:35,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:14:35,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:14:35,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:14:35,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:14:35,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,691 INFO L175 MemorySlicer]: Split 66 memory accesses to 1 slices as follows [66]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 3 writes are split as follows [3]. [2024-11-27 23:14:35,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,700 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:14:35,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:14:35,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:14:35,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:14:35,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (1/1) ... [2024-11-27 23:14:35,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:14:35,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:35,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:14:35,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:14:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:14:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:14:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:14:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:14:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:14:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-27 23:14:35,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-27 23:14:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:14:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:14:35,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:14:35,783 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:14:35,949 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:14:35,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:14:36,353 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:14:36,353 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:14:36,759 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:14:36,760 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 23:14:36,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:14:36 BoogieIcfgContainer [2024-11-27 23:14:36,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:14:36,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:14:36,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:14:36,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:14:36,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:14:34" (1/3) ... [2024-11-27 23:14:36,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50987523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:14:36, skipping insertion in model container [2024-11-27 23:14:36,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:14:35" (2/3) ... [2024-11-27 23:14:36,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50987523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:14:36, skipping insertion in model container [2024-11-27 23:14:36,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:14:36" (3/3) ... [2024-11-27 23:14:36,775 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-11-27 23:14:36,793 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:14:36,795 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_05-funloop_hard2.i that has 2 procedures, 45 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-27 23:14:36,796 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:14:36,858 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:14:36,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2024-11-27 23:14:36,952 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-11-27 23:14:36,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:14:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 3/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-27 23:14:36,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2024-11-27 23:14:36,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 95 flow [2024-11-27 23:14:36,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:14:37,005 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;@3deaca94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:14:37,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-27 23:14:37,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:14:37,012 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 23:14:37,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:14:37,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:37,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:14:37,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:37,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash 406949, now seen corresponding path program 1 times [2024-11-27 23:14:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159400000] [2024-11-27 23:14:37,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:37,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159400000] [2024-11-27 23:14:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159400000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:37,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:37,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:14:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330739863] [2024-11-27 23:14:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:14:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:37,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:14:37,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:14:37,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:37,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:37,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:37,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:37,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:37,757 INFO L124 PetriNetUnfolderBase]: 128/386 cut-off events. [2024-11-27 23:14:37,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:14:37,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 386 events. 128/386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2026 event pairs, 104 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 627. Up to 260 conditions per place. [2024-11-27 23:14:37,765 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 29 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-27 23:14:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 163 flow [2024-11-27 23:14:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:14:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:14:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-27 23:14:37,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-11-27 23:14:37,782 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 95 flow. Second operand 4 states and 103 transitions. [2024-11-27 23:14:37,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 163 flow [2024-11-27 23:14:37,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:37,791 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 118 flow [2024-11-27 23:14:37,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-27 23:14:37,797 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-27 23:14:37,798 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 118 flow [2024-11-27 23:14:37,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:37,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:37,798 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-27 23:14:37,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:14:37,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:37,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash -761097461, now seen corresponding path program 1 times [2024-11-27 23:14:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668499855] [2024-11-27 23:14:37,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:37,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668499855] [2024-11-27 23:14:38,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668499855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977274003] [2024-11-27 23:14:38,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:38,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:38,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:38,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:38,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:14:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:38,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:14:38,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:38,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:14:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977274003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:14:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:14:38,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545977241] [2024-11-27 23:14:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:38,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:14:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:38,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:14:38,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:14:38,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:38,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:38,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:38,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:38,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:38,523 INFO L124 PetriNetUnfolderBase]: 128/385 cut-off events. [2024-11-27 23:14:38,523 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:14:38,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 385 events. 128/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2024 event pairs, 104 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 644. Up to 255 conditions per place. [2024-11-27 23:14:38,528 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-11-27 23:14:38,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 176 flow [2024-11-27 23:14:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:14:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:14:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-27 23:14:38,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-11-27 23:14:38,550 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 118 flow. Second operand 6 states and 134 transitions. [2024-11-27 23:14:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 176 flow [2024-11-27 23:14:38,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:38,552 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 124 flow [2024-11-27 23:14:38,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-11-27 23:14:38,552 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2024-11-27 23:14:38,553 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 124 flow [2024-11-27 23:14:38,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:38,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:38,553 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 23:14:38,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:14:38,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 23:14:38,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:38,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2119184422, now seen corresponding path program 1 times [2024-11-27 23:14:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452052792] [2024-11-27 23:14:38,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:14:38,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:38,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452052792] [2024-11-27 23:14:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452052792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:14:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579991104] [2024-11-27 23:14:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:38,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:14:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:38,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:14:38,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:14:38,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:38,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:38,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:38,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:38,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:39,045 INFO L124 PetriNetUnfolderBase]: 128/384 cut-off events. [2024-11-27 23:14:39,045 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 23:14:39,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 384 events. 128/384 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2021 event pairs, 104 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 640. Up to 258 conditions per place. [2024-11-27 23:14:39,052 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-27 23:14:39,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 180 flow [2024-11-27 23:14:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:14:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:14:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-27 23:14:39,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-11-27 23:14:39,055 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 124 flow. Second operand 3 states and 80 transitions. [2024-11-27 23:14:39,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 180 flow [2024-11-27 23:14:39,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 158 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-27 23:14:39,057 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 106 flow [2024-11-27 23:14:39,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-11-27 23:14:39,061 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-27 23:14:39,061 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 106 flow [2024-11-27 23:14:39,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:39,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:39,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:39,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:14:39,062 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:39,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash 235075338, now seen corresponding path program 1 times [2024-11-27 23:14:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:39,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117836539] [2024-11-27 23:14:39,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117836539] [2024-11-27 23:14:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117836539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101817920] [2024-11-27 23:14:39,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:39,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:39,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:14:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:39,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:14:39,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:39,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:14:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101817920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:14:39,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:14:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-27 23:14:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095276796] [2024-11-27 23:14:39,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:14:39,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:14:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:39,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:14:39,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:14:39,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:39,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 106 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:39,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:39,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:39,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:39,695 INFO L124 PetriNetUnfolderBase]: 128/388 cut-off events. [2024-11-27 23:14:39,695 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-27 23:14:39,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 388 events. 128/388 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2018 event pairs, 104 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 633. Up to 256 conditions per place. [2024-11-27 23:14:39,698 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-11-27 23:14:39,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 187 flow [2024-11-27 23:14:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:14:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:14:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-11-27 23:14:39,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-11-27 23:14:39,701 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 106 flow. Second operand 7 states and 154 transitions. [2024-11-27 23:14:39,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 187 flow [2024-11-27 23:14:39,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:39,703 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 132 flow [2024-11-27 23:14:39,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-11-27 23:14:39,704 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2024-11-27 23:14:39,704 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 132 flow [2024-11-27 23:14:39,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:39,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:39,704 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:39,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:14:39,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:39,909 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:39,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1040845494, now seen corresponding path program 2 times [2024-11-27 23:14:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433958940] [2024-11-27 23:14:39,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:14:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:39,933 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:14:39,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:14:40,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433958940] [2024-11-27 23:14:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433958940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:40,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:14:40,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995041901] [2024-11-27 23:14:40,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:40,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:14:40,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:40,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:14:40,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:14:40,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:40,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:40,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:40,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:40,649 INFO L124 PetriNetUnfolderBase]: 235/591 cut-off events. [2024-11-27 23:14:40,649 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-27 23:14:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 591 events. 235/591 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3055 event pairs, 26 based on Foata normal form. 27/544 useless extension candidates. Maximal degree in co-relation 1058. Up to 341 conditions per place. [2024-11-27 23:14:40,654 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 92 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2024-11-27 23:14:40,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 120 transitions, 486 flow [2024-11-27 23:14:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:14:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:14:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-11-27 23:14:40,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-11-27 23:14:40,659 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 132 flow. Second operand 8 states and 244 transitions. [2024-11-27 23:14:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 120 transitions, 486 flow [2024-11-27 23:14:40,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 120 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:40,664 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 234 flow [2024-11-27 23:14:40,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-11-27 23:14:40,665 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-11-27 23:14:40,666 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 234 flow [2024-11-27 23:14:40,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:40,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:40,667 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:40,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:14:40,667 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:40,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1074286857, now seen corresponding path program 1 times [2024-11-27 23:14:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535793092] [2024-11-27 23:14:40,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:14:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535793092] [2024-11-27 23:14:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535793092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:40,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:40,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:14:40,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493567078] [2024-11-27 23:14:40,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:40,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:14:40,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:40,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:14:40,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:14:40,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:40,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:40,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:40,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:40,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:40,964 INFO L124 PetriNetUnfolderBase]: 229/645 cut-off events. [2024-11-27 23:14:40,964 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-27 23:14:40,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 645 events. 229/645 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3513 event pairs, 54 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1370. Up to 296 conditions per place. [2024-11-27 23:14:40,970 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 62 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-11-27 23:14:40,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 412 flow [2024-11-27 23:14:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:14:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:14:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-27 23:14:40,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-11-27 23:14:40,972 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 234 flow. Second operand 3 states and 102 transitions. [2024-11-27 23:14:40,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 412 flow [2024-11-27 23:14:40,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 408 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:40,978 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 220 flow [2024-11-27 23:14:40,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-27 23:14:40,979 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-11-27 23:14:40,979 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 220 flow [2024-11-27 23:14:40,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:40,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:40,979 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:40,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:14:40,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:40,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1074318837, now seen corresponding path program 1 times [2024-11-27 23:14:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:40,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886499117] [2024-11-27 23:14:40,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886499117] [2024-11-27 23:14:41,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886499117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670676667] [2024-11-27 23:14:41,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:41,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:41,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:14:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:41,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:14:41,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:41,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:14:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:41,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670676667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:14:41,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:14:41,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-27 23:14:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136313705] [2024-11-27 23:14:41,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:14:41,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:14:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:41,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:14:41,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:14:41,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:41,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 220 flow. Second operand has 18 states, 18 states have (on average 18.333333333333332) internal successors, (330), 18 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:41,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:41,910 INFO L124 PetriNetUnfolderBase]: 229/667 cut-off events. [2024-11-27 23:14:41,910 INFO L125 PetriNetUnfolderBase]: For 287/289 co-relation queries the response was YES. [2024-11-27 23:14:41,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 667 events. 229/667 cut-off events. For 287/289 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3608 event pairs, 128 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1443. Up to 456 conditions per place. [2024-11-27 23:14:41,916 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 37 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-11-27 23:14:41,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 372 flow [2024-11-27 23:14:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:14:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 23:14:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 300 transitions. [2024-11-27 23:14:41,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-27 23:14:41,918 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 220 flow. Second operand 15 states and 300 transitions. [2024-11-27 23:14:41,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 372 flow [2024-11-27 23:14:41,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:41,923 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 315 flow [2024-11-27 23:14:41,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=315, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-11-27 23:14:41,924 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-11-27 23:14:41,924 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 315 flow [2024-11-27 23:14:41,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.333333333333332) internal successors, (330), 18 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:41,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:41,925 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:41,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:14:42,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:42,125 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:42,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash -655745397, now seen corresponding path program 2 times [2024-11-27 23:14:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:42,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367689141] [2024-11-27 23:14:42,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:14:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:42,155 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:14:42,155 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 23:14:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367689141] [2024-11-27 23:14:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367689141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:14:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414681935] [2024-11-27 23:14:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:42,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:14:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:42,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:14:42,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:14:42,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:42,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:42,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:42,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:42,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:42,710 INFO L124 PetriNetUnfolderBase]: 273/738 cut-off events. [2024-11-27 23:14:42,710 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-11-27 23:14:42,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 738 events. 273/738 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4047 event pairs, 91 based on Foata normal form. 26/696 useless extension candidates. Maximal degree in co-relation 1614. Up to 492 conditions per place. [2024-11-27 23:14:42,716 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 70 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-11-27 23:14:42,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 596 flow [2024-11-27 23:14:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:14:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:14:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-11-27 23:14:42,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-11-27 23:14:42,718 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 315 flow. Second operand 7 states and 187 transitions. [2024-11-27 23:14:42,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 596 flow [2024-11-27 23:14:42,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 586 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-27 23:14:42,723 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 391 flow [2024-11-27 23:14:42,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-11-27 23:14:42,724 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 44 predicate places. [2024-11-27 23:14:42,724 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 391 flow [2024-11-27 23:14:42,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:42,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:42,725 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:42,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:14:42,725 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:42,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 50844544, now seen corresponding path program 1 times [2024-11-27 23:14:42,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:42,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906949726] [2024-11-27 23:14:42,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 23:14:42,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906949726] [2024-11-27 23:14:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906949726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:42,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:14:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206432085] [2024-11-27 23:14:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:42,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:14:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:42,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:14:42,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:14:42,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:42,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:42,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:42,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:42,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:43,059 INFO L124 PetriNetUnfolderBase]: 257/684 cut-off events. [2024-11-27 23:14:43,059 INFO L125 PetriNetUnfolderBase]: For 477/479 co-relation queries the response was YES. [2024-11-27 23:14:43,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 684 events. 257/684 cut-off events. For 477/479 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3556 event pairs, 66 based on Foata normal form. 22/664 useless extension candidates. Maximal degree in co-relation 1703. Up to 344 conditions per place. [2024-11-27 23:14:43,065 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 86 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-27 23:14:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 675 flow [2024-11-27 23:14:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:14:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:14:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-27 23:14:43,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-11-27 23:14:43,066 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 391 flow. Second operand 4 states and 125 transitions. [2024-11-27 23:14:43,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 675 flow [2024-11-27 23:14:43,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 104 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:43,072 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 403 flow [2024-11-27 23:14:43,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2024-11-27 23:14:43,073 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2024-11-27 23:14:43,075 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 403 flow [2024-11-27 23:14:43,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:43,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:43,075 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:43,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:14:43,075 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:43,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1787391219, now seen corresponding path program 1 times [2024-11-27 23:14:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307818845] [2024-11-27 23:14:43,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 23:14:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307818845] [2024-11-27 23:14:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307818845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:14:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969026136] [2024-11-27 23:14:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:43,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:14:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:43,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:14:43,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:14:43,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:43,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:43,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:43,522 INFO L124 PetriNetUnfolderBase]: 413/1102 cut-off events. [2024-11-27 23:14:43,522 INFO L125 PetriNetUnfolderBase]: For 935/969 co-relation queries the response was YES. [2024-11-27 23:14:43,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 1102 events. 413/1102 cut-off events. For 935/969 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6220 event pairs, 208 based on Foata normal form. 24/1064 useless extension candidates. Maximal degree in co-relation 2768. Up to 504 conditions per place. [2024-11-27 23:14:43,533 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 102 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-27 23:14:43,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 802 flow [2024-11-27 23:14:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:14:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:14:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-27 23:14:43,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-11-27 23:14:43,536 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 403 flow. Second operand 4 states and 136 transitions. [2024-11-27 23:14:43,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 802 flow [2024-11-27 23:14:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:43,544 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 424 flow [2024-11-27 23:14:43,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-11-27 23:14:43,547 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 51 predicate places. [2024-11-27 23:14:43,547 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 424 flow [2024-11-27 23:14:43,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:43,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:43,547 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:43,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:14:43,547 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:43,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1448001423, now seen corresponding path program 1 times [2024-11-27 23:14:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667305545] [2024-11-27 23:14:43,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:43,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:43,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667305545] [2024-11-27 23:14:43,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667305545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:43,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335064708] [2024-11-27 23:14:43,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:43,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:43,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:14:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:44,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:14:44,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:44,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:14:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:14:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335064708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:14:44,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:14:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-27 23:14:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683661161] [2024-11-27 23:14:44,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:14:44,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:14:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:44,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:14:44,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:14:44,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-27 23:14:44,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 424 flow. Second operand has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:44,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:44,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-27 23:14:44,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:44,935 INFO L124 PetriNetUnfolderBase]: 369/1055 cut-off events. [2024-11-27 23:14:44,935 INFO L125 PetriNetUnfolderBase]: For 1045/1071 co-relation queries the response was YES. [2024-11-27 23:14:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 1055 events. 369/1055 cut-off events. For 1045/1071 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6072 event pairs, 234 based on Foata normal form. 3/1038 useless extension candidates. Maximal degree in co-relation 2750. Up to 734 conditions per place. [2024-11-27 23:14:44,948 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 47 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2024-11-27 23:14:44,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 84 transitions, 614 flow [2024-11-27 23:14:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:14:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 23:14:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2024-11-27 23:14:44,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41236068895643363 [2024-11-27 23:14:44,951 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 424 flow. Second operand 21 states and 407 transitions. [2024-11-27 23:14:44,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 84 transitions, 614 flow [2024-11-27 23:14:44,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 84 transitions, 611 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:14:44,964 INFO L231 Difference]: Finished difference. Result has 120 places, 84 transitions, 532 flow [2024-11-27 23:14:44,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=532, PETRI_PLACES=120, PETRI_TRANSITIONS=84} [2024-11-27 23:14:44,966 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 73 predicate places. [2024-11-27 23:14:44,967 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 84 transitions, 532 flow [2024-11-27 23:14:44,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:44,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:44,968 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:44,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:14:45,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:45,169 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:45,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash -479263709, now seen corresponding path program 1 times [2024-11-27 23:14:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574092650] [2024-11-27 23:14:45,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:14:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:14:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:14:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574092650] [2024-11-27 23:14:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574092650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:45,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:45,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:14:45,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528140270] [2024-11-27 23:14:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:45,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:14:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:45,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:14:45,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:14:45,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:46,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 84 transitions, 532 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:46,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:46,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:46,587 INFO L124 PetriNetUnfolderBase]: 496/1391 cut-off events. [2024-11-27 23:14:46,587 INFO L125 PetriNetUnfolderBase]: For 1356/1375 co-relation queries the response was YES. [2024-11-27 23:14:46,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3920 conditions, 1391 events. 496/1391 cut-off events. For 1356/1375 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8601 event pairs, 213 based on Foata normal form. 14/1389 useless extension candidates. Maximal degree in co-relation 3745. Up to 511 conditions per place. [2024-11-27 23:14:46,601 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 144 selfloop transitions, 22 changer transitions 0/182 dead transitions. [2024-11-27 23:14:46,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 182 transitions, 1351 flow [2024-11-27 23:14:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:14:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:14:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-11-27 23:14:46,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6436170212765957 [2024-11-27 23:14:46,603 INFO L175 Difference]: Start difference. First operand has 120 places, 84 transitions, 532 flow. Second operand 8 states and 242 transitions. [2024-11-27 23:14:46,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 182 transitions, 1351 flow [2024-11-27 23:14:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 182 transitions, 1308 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-27 23:14:46,616 INFO L231 Difference]: Finished difference. Result has 119 places, 103 transitions, 698 flow [2024-11-27 23:14:46,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=119, PETRI_TRANSITIONS=103} [2024-11-27 23:14:46,617 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 72 predicate places. [2024-11-27 23:14:46,617 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 103 transitions, 698 flow [2024-11-27 23:14:46,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:46,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:46,617 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:46,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:14:46,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:46,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 394501037, now seen corresponding path program 2 times [2024-11-27 23:14:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199023518] [2024-11-27 23:14:46,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:14:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:46,641 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:14:46,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:14:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:47,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199023518] [2024-11-27 23:14:47,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199023518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:47,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:47,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:14:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997346656] [2024-11-27 23:14:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:47,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:14:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:47,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:14:47,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:14:47,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:47,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 103 transitions, 698 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:47,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:47,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:47,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:47,734 INFO L124 PetriNetUnfolderBase]: 555/1523 cut-off events. [2024-11-27 23:14:47,734 INFO L125 PetriNetUnfolderBase]: For 2684/2721 co-relation queries the response was YES. [2024-11-27 23:14:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5110 conditions, 1523 events. 555/1523 cut-off events. For 2684/2721 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9627 event pairs, 141 based on Foata normal form. 11/1509 useless extension candidates. Maximal degree in co-relation 4950. Up to 435 conditions per place. [2024-11-27 23:14:47,751 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 149 selfloop transitions, 27 changer transitions 0/192 dead transitions. [2024-11-27 23:14:47,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 192 transitions, 1570 flow [2024-11-27 23:14:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:14:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:14:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-11-27 23:14:47,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-27 23:14:47,753 INFO L175 Difference]: Start difference. First operand has 119 places, 103 transitions, 698 flow. Second operand 8 states and 240 transitions. [2024-11-27 23:14:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 192 transitions, 1570 flow [2024-11-27 23:14:47,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 192 transitions, 1553 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:47,770 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 885 flow [2024-11-27 23:14:47,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=885, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2024-11-27 23:14:47,771 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 82 predicate places. [2024-11-27 23:14:47,771 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 885 flow [2024-11-27 23:14:47,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:47,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:47,772 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:14:47,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -465586541, now seen corresponding path program 3 times [2024-11-27 23:14:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486083953] [2024-11-27 23:14:47,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:14:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:47,801 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:14:47,802 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:14:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:48,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486083953] [2024-11-27 23:14:48,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486083953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:48,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:14:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694787106] [2024-11-27 23:14:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:48,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:14:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:48,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:14:48,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:14:48,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:48,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 885 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:48,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:48,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:48,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:49,017 INFO L124 PetriNetUnfolderBase]: 650/1797 cut-off events. [2024-11-27 23:14:49,017 INFO L125 PetriNetUnfolderBase]: For 4883/4926 co-relation queries the response was YES. [2024-11-27 23:14:49,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6714 conditions, 1797 events. 650/1797 cut-off events. For 4883/4926 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11997 event pairs, 99 based on Foata normal form. 7/1784 useless extension candidates. Maximal degree in co-relation 6549. Up to 526 conditions per place. [2024-11-27 23:14:49,039 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 154 selfloop transitions, 68 changer transitions 0/238 dead transitions. [2024-11-27 23:14:49,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 238 transitions, 2219 flow [2024-11-27 23:14:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:14:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:14:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 334 transitions. [2024-11-27 23:14:49,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5921985815602837 [2024-11-27 23:14:49,041 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 885 flow. Second operand 12 states and 334 transitions. [2024-11-27 23:14:49,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 238 transitions, 2219 flow [2024-11-27 23:14:49,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 238 transitions, 2196 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:49,063 INFO L231 Difference]: Finished difference. Result has 145 places, 159 transitions, 1498 flow [2024-11-27 23:14:49,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1498, PETRI_PLACES=145, PETRI_TRANSITIONS=159} [2024-11-27 23:14:49,064 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 98 predicate places. [2024-11-27 23:14:49,065 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 159 transitions, 1498 flow [2024-11-27 23:14:49,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:49,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:49,066 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:49,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:14:49,066 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:49,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash -909439789, now seen corresponding path program 4 times [2024-11-27 23:14:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:49,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523952655] [2024-11-27 23:14:49,067 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:14:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:49,098 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:14:49,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:14:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523952655] [2024-11-27 23:14:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523952655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:14:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207117892] [2024-11-27 23:14:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:49,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:14:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:49,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:14:49,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:14:49,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:49,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 159 transitions, 1498 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:49,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:49,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:50,318 INFO L124 PetriNetUnfolderBase]: 670/1855 cut-off events. [2024-11-27 23:14:50,318 INFO L125 PetriNetUnfolderBase]: For 7543/7609 co-relation queries the response was YES. [2024-11-27 23:14:50,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7838 conditions, 1855 events. 670/1855 cut-off events. For 7543/7609 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12561 event pairs, 84 based on Foata normal form. 22/1854 useless extension candidates. Maximal degree in co-relation 7665. Up to 445 conditions per place. [2024-11-27 23:14:50,339 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 192 selfloop transitions, 71 changer transitions 0/279 dead transitions. [2024-11-27 23:14:50,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 279 transitions, 2962 flow [2024-11-27 23:14:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:14:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:14:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-11-27 23:14:50,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-11-27 23:14:50,342 INFO L175 Difference]: Start difference. First operand has 145 places, 159 transitions, 1498 flow. Second operand 10 states and 310 transitions. [2024-11-27 23:14:50,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 279 transitions, 2962 flow [2024-11-27 23:14:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 279 transitions, 2875 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:50,376 INFO L231 Difference]: Finished difference. Result has 158 places, 179 transitions, 1936 flow [2024-11-27 23:14:50,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=158, PETRI_TRANSITIONS=179} [2024-11-27 23:14:50,377 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 111 predicate places. [2024-11-27 23:14:50,377 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 179 transitions, 1936 flow [2024-11-27 23:14:50,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:50,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:50,377 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:50,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:14:50,377 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:50,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1437579729, now seen corresponding path program 2 times [2024-11-27 23:14:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402795582] [2024-11-27 23:14:50,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:14:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:50,395 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:14:50,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:14:50,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:50,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402795582] [2024-11-27 23:14:50,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402795582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:50,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:50,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:14:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200190799] [2024-11-27 23:14:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:50,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:14:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:50,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:14:50,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:14:50,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:50,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 179 transitions, 1936 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:50,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:50,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:50,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:51,366 INFO L124 PetriNetUnfolderBase]: 670/1890 cut-off events. [2024-11-27 23:14:51,367 INFO L125 PetriNetUnfolderBase]: For 10160/10211 co-relation queries the response was YES. [2024-11-27 23:14:51,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 1890 events. 670/1890 cut-off events. For 10160/10211 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12944 event pairs, 262 based on Foata normal form. 9/1873 useless extension candidates. Maximal degree in co-relation 8267. Up to 620 conditions per place. [2024-11-27 23:14:51,398 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 201 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-11-27 23:14:51,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 263 transitions, 3192 flow [2024-11-27 23:14:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:14:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:14:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-11-27 23:14:51,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-11-27 23:14:51,400 INFO L175 Difference]: Start difference. First operand has 158 places, 179 transitions, 1936 flow. Second operand 7 states and 217 transitions. [2024-11-27 23:14:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 263 transitions, 3192 flow [2024-11-27 23:14:51,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 3045 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:51,445 INFO L231 Difference]: Finished difference. Result has 167 places, 199 transitions, 2285 flow [2024-11-27 23:14:51,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2285, PETRI_PLACES=167, PETRI_TRANSITIONS=199} [2024-11-27 23:14:51,447 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 120 predicate places. [2024-11-27 23:14:51,448 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 199 transitions, 2285 flow [2024-11-27 23:14:51,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:51,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:51,448 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:51,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:14:51,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:51,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 67901587, now seen corresponding path program 3 times [2024-11-27 23:14:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:51,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516519148] [2024-11-27 23:14:51,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:14:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:51,471 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:14:51,472 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:14:51,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:51,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516519148] [2024-11-27 23:14:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516519148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:51,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:14:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799893064] [2024-11-27 23:14:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:51,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:14:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:51,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:14:51,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:14:51,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:51,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 199 transitions, 2285 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:51,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:51,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:51,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:52,334 INFO L124 PetriNetUnfolderBase]: 667/1890 cut-off events. [2024-11-27 23:14:52,334 INFO L125 PetriNetUnfolderBase]: For 10651/10705 co-relation queries the response was YES. [2024-11-27 23:14:52,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 1890 events. 667/1890 cut-off events. For 10651/10705 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12920 event pairs, 224 based on Foata normal form. 14/1874 useless extension candidates. Maximal degree in co-relation 8340. Up to 695 conditions per place. [2024-11-27 23:14:52,362 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 190 selfloop transitions, 65 changer transitions 0/271 dead transitions. [2024-11-27 23:14:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 271 transitions, 3423 flow [2024-11-27 23:14:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:14:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:14:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-11-27 23:14:52,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474164133738601 [2024-11-27 23:14:52,366 INFO L175 Difference]: Start difference. First operand has 167 places, 199 transitions, 2285 flow. Second operand 7 states and 213 transitions. [2024-11-27 23:14:52,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 271 transitions, 3423 flow [2024-11-27 23:14:52,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 271 transitions, 3345 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:52,420 INFO L231 Difference]: Finished difference. Result has 175 places, 214 transitions, 2666 flow [2024-11-27 23:14:52,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2666, PETRI_PLACES=175, PETRI_TRANSITIONS=214} [2024-11-27 23:14:52,421 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 128 predicate places. [2024-11-27 23:14:52,421 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 214 transitions, 2666 flow [2024-11-27 23:14:52,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:52,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:52,421 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:52,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:14:52,421 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:52,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1226227867, now seen corresponding path program 5 times [2024-11-27 23:14:52,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:52,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274613492] [2024-11-27 23:14:52,424 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:14:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:52,482 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:14:52,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-27 23:14:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274613492] [2024-11-27 23:14:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274613492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634193319] [2024-11-27 23:14:53,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:14:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:53,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:53,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:14:53,659 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:14:53,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:53,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:14:53,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:53,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:14:53,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-27 23:14:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:14:53,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:14:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634193319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:53,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:14:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2024-11-27 23:14:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137357702] [2024-11-27 23:14:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:53,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:14:53,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:53,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:14:53,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:14:54,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:14:54,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 214 transitions, 2666 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:54,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:54,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:14:54,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:55,737 INFO L124 PetriNetUnfolderBase]: 1304/3058 cut-off events. [2024-11-27 23:14:55,738 INFO L125 PetriNetUnfolderBase]: For 20830/20846 co-relation queries the response was YES. [2024-11-27 23:14:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14513 conditions, 3058 events. 1304/3058 cut-off events. For 20830/20846 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21375 event pairs, 412 based on Foata normal form. 49/3066 useless extension candidates. Maximal degree in co-relation 14326. Up to 936 conditions per place. [2024-11-27 23:14:55,783 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 358 selfloop transitions, 77 changer transitions 0/446 dead transitions. [2024-11-27 23:14:55,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 446 transitions, 5682 flow [2024-11-27 23:14:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:14:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:14:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 458 transitions. [2024-11-27 23:14:55,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-11-27 23:14:55,785 INFO L175 Difference]: Start difference. First operand has 175 places, 214 transitions, 2666 flow. Second operand 18 states and 458 transitions. [2024-11-27 23:14:55,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 446 transitions, 5682 flow [2024-11-27 23:14:55,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 446 transitions, 5514 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:55,874 INFO L231 Difference]: Finished difference. Result has 203 places, 262 transitions, 3452 flow [2024-11-27 23:14:55,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3452, PETRI_PLACES=203, PETRI_TRANSITIONS=262} [2024-11-27 23:14:55,875 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 156 predicate places. [2024-11-27 23:14:55,876 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 262 transitions, 3452 flow [2024-11-27 23:14:55,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:55,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:55,876 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:55,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:14:56,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:14:56,077 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:56,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1811864407, now seen corresponding path program 4 times [2024-11-27 23:14:56,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:56,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713974989] [2024-11-27 23:14:56,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:14:56,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:56,104 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:14:56,104 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:14:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713974989] [2024-11-27 23:14:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713974989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:56,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:14:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:14:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166624664] [2024-11-27 23:14:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:56,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:14:56,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:56,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:14:56,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:14:56,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 262 transitions, 3452 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:57,538 INFO L124 PetriNetUnfolderBase]: 825/2288 cut-off events. [2024-11-27 23:14:57,538 INFO L125 PetriNetUnfolderBase]: For 21094/21373 co-relation queries the response was YES. [2024-11-27 23:14:57,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12265 conditions, 2288 events. 825/2288 cut-off events. For 21094/21373 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16473 event pairs, 188 based on Foata normal form. 31/2274 useless extension candidates. Maximal degree in co-relation 12064. Up to 591 conditions per place. [2024-11-27 23:14:57,564 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 247 selfloop transitions, 106 changer transitions 0/374 dead transitions. [2024-11-27 23:14:57,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 374 transitions, 5355 flow [2024-11-27 23:14:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:14:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:14:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-11-27 23:14:57,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6510638297872341 [2024-11-27 23:14:57,565 INFO L175 Difference]: Start difference. First operand has 203 places, 262 transitions, 3452 flow. Second operand 10 states and 306 transitions. [2024-11-27 23:14:57,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 374 transitions, 5355 flow [2024-11-27 23:14:57,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 374 transitions, 5221 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-11-27 23:14:57,650 INFO L231 Difference]: Finished difference. Result has 214 places, 284 transitions, 3998 flow [2024-11-27 23:14:57,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3998, PETRI_PLACES=214, PETRI_TRANSITIONS=284} [2024-11-27 23:14:57,651 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 167 predicate places. [2024-11-27 23:14:57,651 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 284 transitions, 3998 flow [2024-11-27 23:14:57,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:57,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:57,652 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:57,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:14:57,652 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:14:57,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:14:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1891315995, now seen corresponding path program 5 times [2024-11-27 23:14:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:14:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612195662] [2024-11-27 23:14:57,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:14:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:14:57,690 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:14:57,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 23:14:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:14:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612195662] [2024-11-27 23:14:58,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612195662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:14:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755663824] [2024-11-27 23:14:58,396 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:14:58,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:14:58,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:14:58,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:14:58,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:14:58,568 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:14:58,568 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:14:58,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:14:58,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:14:58,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 23:14:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:14:58,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:14:58,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755663824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:14:58,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:14:58,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2024-11-27 23:14:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864347602] [2024-11-27 23:14:58,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:14:58,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:14:58,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:14:58,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:14:58,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:14:58,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:14:58,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 284 transitions, 3998 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:58,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:14:58,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:14:58,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:14:59,851 INFO L124 PetriNetUnfolderBase]: 813/2266 cut-off events. [2024-11-27 23:14:59,851 INFO L125 PetriNetUnfolderBase]: For 22495/22852 co-relation queries the response was YES. [2024-11-27 23:14:59,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 2266 events. 813/2266 cut-off events. For 22495/22852 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16399 event pairs, 283 based on Foata normal form. 36/2251 useless extension candidates. Maximal degree in co-relation 12197. Up to 765 conditions per place. [2024-11-27 23:14:59,880 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 250 selfloop transitions, 70 changer transitions 0/341 dead transitions. [2024-11-27 23:14:59,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 341 transitions, 5079 flow [2024-11-27 23:14:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:14:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:14:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 295 transitions. [2024-11-27 23:14:59,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-11-27 23:14:59,882 INFO L175 Difference]: Start difference. First operand has 214 places, 284 transitions, 3998 flow. Second operand 10 states and 295 transitions. [2024-11-27 23:14:59,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 341 transitions, 5079 flow [2024-11-27 23:14:59,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 341 transitions, 4903 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-11-27 23:14:59,948 INFO L231 Difference]: Finished difference. Result has 226 places, 284 transitions, 4069 flow [2024-11-27 23:14:59,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4069, PETRI_PLACES=226, PETRI_TRANSITIONS=284} [2024-11-27 23:14:59,949 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 179 predicate places. [2024-11-27 23:14:59,949 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 284 transitions, 4069 flow [2024-11-27 23:14:59,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:14:59,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:14:59,949 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:14:59,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:15:00,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:00,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:00,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2072066037, now seen corresponding path program 6 times [2024-11-27 23:15:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:00,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926949975] [2024-11-27 23:15:00,154 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:15:00,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:00,172 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:15:00,173 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926949975] [2024-11-27 23:15:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926949975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:15:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190582847] [2024-11-27 23:15:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:15:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:00,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:15:00,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:00,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:15:00,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 284 transitions, 4069 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:00,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:00,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:15:00,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:01,164 INFO L124 PetriNetUnfolderBase]: 810/2252 cut-off events. [2024-11-27 23:15:01,164 INFO L125 PetriNetUnfolderBase]: For 22671/23037 co-relation queries the response was YES. [2024-11-27 23:15:01,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 2252 events. 810/2252 cut-off events. For 22671/23037 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16204 event pairs, 251 based on Foata normal form. 36/2241 useless extension candidates. Maximal degree in co-relation 12185. Up to 987 conditions per place. [2024-11-27 23:15:01,197 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 262 selfloop transitions, 63 changer transitions 0/346 dead transitions. [2024-11-27 23:15:01,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 346 transitions, 5287 flow [2024-11-27 23:15:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:15:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:15:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-11-27 23:15:01,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.662613981762918 [2024-11-27 23:15:01,199 INFO L175 Difference]: Start difference. First operand has 226 places, 284 transitions, 4069 flow. Second operand 7 states and 218 transitions. [2024-11-27 23:15:01,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 346 transitions, 5287 flow [2024-11-27 23:15:01,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 346 transitions, 5166 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-27 23:15:01,309 INFO L231 Difference]: Finished difference. Result has 233 places, 295 transitions, 4339 flow [2024-11-27 23:15:01,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4339, PETRI_PLACES=233, PETRI_TRANSITIONS=295} [2024-11-27 23:15:01,310 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 186 predicate places. [2024-11-27 23:15:01,310 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 295 transitions, 4339 flow [2024-11-27 23:15:01,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:01,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:01,311 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:01,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:15:01,311 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:01,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1256829687, now seen corresponding path program 7 times [2024-11-27 23:15:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:01,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874345141] [2024-11-27 23:15:01,312 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:15:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:01,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874345141] [2024-11-27 23:15:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874345141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:15:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852062348] [2024-11-27 23:15:01,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:01,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:15:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:01,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:15:01,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:15:01,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:15:01,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 295 transitions, 4339 flow. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:01,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:01,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:15:01,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:02,624 INFO L124 PetriNetUnfolderBase]: 788/2208 cut-off events. [2024-11-27 23:15:02,625 INFO L125 PetriNetUnfolderBase]: For 23386/23724 co-relation queries the response was YES. [2024-11-27 23:15:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 2208 events. 788/2208 cut-off events. For 23386/23724 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15829 event pairs, 230 based on Foata normal form. 30/2200 useless extension candidates. Maximal degree in co-relation 12112. Up to 986 conditions per place. [2024-11-27 23:15:02,663 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 265 selfloop transitions, 59 changer transitions 0/345 dead transitions. [2024-11-27 23:15:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 345 transitions, 5388 flow [2024-11-27 23:15:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:15:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:15:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-11-27 23:15:02,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-27 23:15:02,664 INFO L175 Difference]: Start difference. First operand has 233 places, 295 transitions, 4339 flow. Second operand 8 states and 235 transitions. [2024-11-27 23:15:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 345 transitions, 5388 flow [2024-11-27 23:15:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 345 transitions, 5277 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:02,798 INFO L231 Difference]: Finished difference. Result has 240 places, 297 transitions, 4426 flow [2024-11-27 23:15:02,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4178, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4426, PETRI_PLACES=240, PETRI_TRANSITIONS=297} [2024-11-27 23:15:02,799 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 193 predicate places. [2024-11-27 23:15:02,799 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 297 transitions, 4426 flow [2024-11-27 23:15:02,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:02,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:02,799 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:02,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:15:02,800 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:02,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash 182027587, now seen corresponding path program 6 times [2024-11-27 23:15:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:02,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433332258] [2024-11-27 23:15:02,801 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:15:02,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:02,814 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:15:02,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433332258] [2024-11-27 23:15:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433332258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:02,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:02,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:15:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811232823] [2024-11-27 23:15:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:02,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:15:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:02,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:15:02,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:02,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:15:02,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 297 transitions, 4426 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:02,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:02,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:15:02,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:03,794 INFO L124 PetriNetUnfolderBase]: 762/2140 cut-off events. [2024-11-27 23:15:03,794 INFO L125 PetriNetUnfolderBase]: For 22334/22676 co-relation queries the response was YES. [2024-11-27 23:15:03,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11882 conditions, 2140 events. 762/2140 cut-off events. For 22334/22676 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15329 event pairs, 197 based on Foata normal form. 31/2133 useless extension candidates. Maximal degree in co-relation 11665. Up to 987 conditions per place. [2024-11-27 23:15:03,818 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 246 selfloop transitions, 66 changer transitions 0/333 dead transitions. [2024-11-27 23:15:03,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 333 transitions, 5288 flow [2024-11-27 23:15:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:15:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:15:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-11-27 23:15:03,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6413373860182371 [2024-11-27 23:15:03,820 INFO L175 Difference]: Start difference. First operand has 240 places, 297 transitions, 4426 flow. Second operand 7 states and 211 transitions. [2024-11-27 23:15:03,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 333 transitions, 5288 flow [2024-11-27 23:15:03,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 333 transitions, 5181 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-27 23:15:03,956 INFO L231 Difference]: Finished difference. Result has 242 places, 294 transitions, 4389 flow [2024-11-27 23:15:03,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4257, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4389, PETRI_PLACES=242, PETRI_TRANSITIONS=294} [2024-11-27 23:15:03,957 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 195 predicate places. [2024-11-27 23:15:03,957 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 294 transitions, 4389 flow [2024-11-27 23:15:03,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:03,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:03,957 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:03,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:15:03,958 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:03,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash -732102989, now seen corresponding path program 8 times [2024-11-27 23:15:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070770290] [2024-11-27 23:15:03,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:15:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:03,973 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:15:03,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:04,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070770290] [2024-11-27 23:15:04,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070770290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:04,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:04,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:15:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047165283] [2024-11-27 23:15:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:04,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:15:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:04,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:15:04,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:04,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-27 23:15:04,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 294 transitions, 4389 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:04,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:04,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-27 23:15:04,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:04,853 INFO L124 PetriNetUnfolderBase]: 711/2016 cut-off events. [2024-11-27 23:15:04,853 INFO L125 PetriNetUnfolderBase]: For 21614/21944 co-relation queries the response was YES. [2024-11-27 23:15:04,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11247 conditions, 2016 events. 711/2016 cut-off events. For 21614/21944 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 14053 event pairs, 253 based on Foata normal form. 31/2010 useless extension candidates. Maximal degree in co-relation 11031. Up to 957 conditions per place. [2024-11-27 23:15:04,874 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 222 selfloop transitions, 76 changer transitions 0/319 dead transitions. [2024-11-27 23:15:04,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 319 transitions, 5183 flow [2024-11-27 23:15:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:15:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:15:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-11-27 23:15:04,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6322188449848024 [2024-11-27 23:15:04,876 INFO L175 Difference]: Start difference. First operand has 242 places, 294 transitions, 4389 flow. Second operand 7 states and 208 transitions. [2024-11-27 23:15:04,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 319 transitions, 5183 flow [2024-11-27 23:15:04,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 319 transitions, 5003 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-27 23:15:04,989 INFO L231 Difference]: Finished difference. Result has 238 places, 289 transitions, 4348 flow [2024-11-27 23:15:04,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4348, PETRI_PLACES=238, PETRI_TRANSITIONS=289} [2024-11-27 23:15:04,990 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 191 predicate places. [2024-11-27 23:15:04,991 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 289 transitions, 4348 flow [2024-11-27 23:15:04,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:04,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:04,991 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:04,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:15:04,991 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:04,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1801807859, now seen corresponding path program 1 times [2024-11-27 23:15:04,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384649977] [2024-11-27 23:15:04,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384649977] [2024-11-27 23:15:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384649977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:05,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743380375] [2024-11-27 23:15:05,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:05,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:05,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:05,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-27 23:15:05,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 289 transitions, 4348 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:05,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:05,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-27 23:15:05,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:06,689 INFO L124 PetriNetUnfolderBase]: 1167/2850 cut-off events. [2024-11-27 23:15:06,689 INFO L125 PetriNetUnfolderBase]: For 27782/27801 co-relation queries the response was YES. [2024-11-27 23:15:06,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15508 conditions, 2850 events. 1167/2850 cut-off events. For 27782/27801 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 20404 event pairs, 493 based on Foata normal form. 28/2838 useless extension candidates. Maximal degree in co-relation 15297. Up to 1925 conditions per place. [2024-11-27 23:15:06,709 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 352 selfloop transitions, 43 changer transitions 0/408 dead transitions. [2024-11-27 23:15:06,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 408 transitions, 6678 flow [2024-11-27 23:15:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:15:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:15:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 305 transitions. [2024-11-27 23:15:06,710 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49918166939443537 [2024-11-27 23:15:06,711 INFO L175 Difference]: Start difference. First operand has 238 places, 289 transitions, 4348 flow. Second operand 13 states and 305 transitions. [2024-11-27 23:15:06,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 408 transitions, 6678 flow [2024-11-27 23:15:06,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 408 transitions, 6460 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-27 23:15:06,806 INFO L231 Difference]: Finished difference. Result has 254 places, 311 transitions, 4588 flow [2024-11-27 23:15:06,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4166, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4588, PETRI_PLACES=254, PETRI_TRANSITIONS=311} [2024-11-27 23:15:06,807 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 207 predicate places. [2024-11-27 23:15:06,807 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 311 transitions, 4588 flow [2024-11-27 23:15:06,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:06,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:06,808 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:06,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:15:06,808 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:06,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -232136673, now seen corresponding path program 1 times [2024-11-27 23:15:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303875605] [2024-11-27 23:15:06,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:06,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:07,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:07,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303875605] [2024-11-27 23:15:07,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303875605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:07,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:07,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318255360] [2024-11-27 23:15:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:07,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:07,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:07,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:07,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-27 23:15:07,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 311 transitions, 4588 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:07,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:07,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-27 23:15:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:08,871 INFO L124 PetriNetUnfolderBase]: 1303/3134 cut-off events. [2024-11-27 23:15:08,871 INFO L125 PetriNetUnfolderBase]: For 33917/33942 co-relation queries the response was YES. [2024-11-27 23:15:08,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18008 conditions, 3134 events. 1303/3134 cut-off events. For 33917/33942 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 22654 event pairs, 487 based on Foata normal form. 37/3131 useless extension candidates. Maximal degree in co-relation 17789. Up to 2003 conditions per place. [2024-11-27 23:15:08,917 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 382 selfloop transitions, 50 changer transitions 0/445 dead transitions. [2024-11-27 23:15:08,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 445 transitions, 7075 flow [2024-11-27 23:15:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:15:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:15:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 321 transitions. [2024-11-27 23:15:08,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5253682487725041 [2024-11-27 23:15:08,919 INFO L175 Difference]: Start difference. First operand has 254 places, 311 transitions, 4588 flow. Second operand 13 states and 321 transitions. [2024-11-27 23:15:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 445 transitions, 7075 flow [2024-11-27 23:15:09,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 445 transitions, 6993 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:09,062 INFO L231 Difference]: Finished difference. Result has 272 places, 333 transitions, 5034 flow [2024-11-27 23:15:09,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5034, PETRI_PLACES=272, PETRI_TRANSITIONS=333} [2024-11-27 23:15:09,063 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 225 predicate places. [2024-11-27 23:15:09,064 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 333 transitions, 5034 flow [2024-11-27 23:15:09,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:09,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:09,064 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:09,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:15:09,064 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:09,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash -363907669, now seen corresponding path program 2 times [2024-11-27 23:15:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:09,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153593741] [2024-11-27 23:15:09,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:15:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:09,081 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:15:09,081 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153593741] [2024-11-27 23:15:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153593741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916510566] [2024-11-27 23:15:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:09,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:09,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:09,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:09,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:09,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 333 transitions, 5034 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:09,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:09,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:11,055 INFO L124 PetriNetUnfolderBase]: 1572/3623 cut-off events. [2024-11-27 23:15:11,055 INFO L125 PetriNetUnfolderBase]: For 48180/48228 co-relation queries the response was YES. [2024-11-27 23:15:11,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22437 conditions, 3623 events. 1572/3623 cut-off events. For 48180/48228 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25912 event pairs, 521 based on Foata normal form. 38/3623 useless extension candidates. Maximal degree in co-relation 22210. Up to 1621 conditions per place. [2024-11-27 23:15:11,088 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 352 selfloop transitions, 144 changer transitions 0/507 dead transitions. [2024-11-27 23:15:11,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 507 transitions, 8000 flow [2024-11-27 23:15:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:15:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 23:15:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 414 transitions. [2024-11-27 23:15:11,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5181476846057572 [2024-11-27 23:15:11,091 INFO L175 Difference]: Start difference. First operand has 272 places, 333 transitions, 5034 flow. Second operand 17 states and 414 transitions. [2024-11-27 23:15:11,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 507 transitions, 8000 flow [2024-11-27 23:15:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 507 transitions, 7863 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:11,276 INFO L231 Difference]: Finished difference. Result has 298 places, 387 transitions, 6325 flow [2024-11-27 23:15:11,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6325, PETRI_PLACES=298, PETRI_TRANSITIONS=387} [2024-11-27 23:15:11,276 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 251 predicate places. [2024-11-27 23:15:11,276 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 387 transitions, 6325 flow [2024-11-27 23:15:11,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:11,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:11,277 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:11,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:15:11,277 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:11,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 549433877, now seen corresponding path program 3 times [2024-11-27 23:15:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789511088] [2024-11-27 23:15:11,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:15:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:11,290 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:15:11,290 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789511088] [2024-11-27 23:15:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789511088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31151314] [2024-11-27 23:15:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:11,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:11,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:11,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:11,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 387 transitions, 6325 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:13,354 INFO L124 PetriNetUnfolderBase]: 1864/4226 cut-off events. [2024-11-27 23:15:13,355 INFO L125 PetriNetUnfolderBase]: For 81126/81176 co-relation queries the response was YES. [2024-11-27 23:15:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29272 conditions, 4226 events. 1864/4226 cut-off events. For 81126/81176 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 31167 event pairs, 591 based on Foata normal form. 36/4213 useless extension candidates. Maximal degree in co-relation 29034. Up to 1862 conditions per place. [2024-11-27 23:15:13,392 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 421 selfloop transitions, 138 changer transitions 0/570 dead transitions. [2024-11-27 23:15:13,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 570 transitions, 9790 flow [2024-11-27 23:15:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:15:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:15:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 446 transitions. [2024-11-27 23:15:13,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-11-27 23:15:13,394 INFO L175 Difference]: Start difference. First operand has 298 places, 387 transitions, 6325 flow. Second operand 18 states and 446 transitions. [2024-11-27 23:15:13,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 570 transitions, 9790 flow [2024-11-27 23:15:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 570 transitions, 9529 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:13,679 INFO L231 Difference]: Finished difference. Result has 324 places, 442 transitions, 7589 flow [2024-11-27 23:15:13,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7589, PETRI_PLACES=324, PETRI_TRANSITIONS=442} [2024-11-27 23:15:13,680 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 277 predicate places. [2024-11-27 23:15:13,680 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 442 transitions, 7589 flow [2024-11-27 23:15:13,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:13,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:13,680 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:13,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 23:15:13,681 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:13,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 572865487, now seen corresponding path program 4 times [2024-11-27 23:15:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:13,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612154816] [2024-11-27 23:15:13,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:15:13,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:13,697 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:15:13,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612154816] [2024-11-27 23:15:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612154816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159829991] [2024-11-27 23:15:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:14,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:14,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:14,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:14,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:14,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 442 transitions, 7589 flow. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:14,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:14,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:16,123 INFO L124 PetriNetUnfolderBase]: 2011/4527 cut-off events. [2024-11-27 23:15:16,123 INFO L125 PetriNetUnfolderBase]: For 119326/119385 co-relation queries the response was YES. [2024-11-27 23:15:16,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34428 conditions, 4527 events. 2011/4527 cut-off events. For 119326/119385 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33655 event pairs, 654 based on Foata normal form. 38/4518 useless extension candidates. Maximal degree in co-relation 34179. Up to 2247 conditions per place. [2024-11-27 23:15:16,171 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 409 selfloop transitions, 174 changer transitions 0/594 dead transitions. [2024-11-27 23:15:16,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 594 transitions, 10877 flow [2024-11-27 23:15:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:15:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:15:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 423 transitions. [2024-11-27 23:15:16,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 23:15:16,173 INFO L175 Difference]: Start difference. First operand has 324 places, 442 transitions, 7589 flow. Second operand 18 states and 423 transitions. [2024-11-27 23:15:16,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 594 transitions, 10877 flow [2024-11-27 23:15:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 594 transitions, 10474 flow, removed 128 selfloop flow, removed 3 redundant places. [2024-11-27 23:15:16,672 INFO L231 Difference]: Finished difference. Result has 350 places, 476 transitions, 8621 flow [2024-11-27 23:15:16,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8621, PETRI_PLACES=350, PETRI_TRANSITIONS=476} [2024-11-27 23:15:16,672 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 303 predicate places. [2024-11-27 23:15:16,672 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 476 transitions, 8621 flow [2024-11-27 23:15:16,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:16,673 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:16,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:15:16,673 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:16,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash -286009043, now seen corresponding path program 5 times [2024-11-27 23:15:16,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:16,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369117201] [2024-11-27 23:15:16,674 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:15:16,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:16,838 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:15:16,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369117201] [2024-11-27 23:15:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369117201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:17,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:17,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671289728] [2024-11-27 23:15:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:17,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:17,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:17,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:17,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-27 23:15:17,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 476 transitions, 8621 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:17,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-27 23:15:17,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:19,702 INFO L124 PetriNetUnfolderBase]: 2008/4597 cut-off events. [2024-11-27 23:15:19,702 INFO L125 PetriNetUnfolderBase]: For 159771/159786 co-relation queries the response was YES. [2024-11-27 23:15:19,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37436 conditions, 4597 events. 2008/4597 cut-off events. For 159771/159786 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 35456 event pairs, 564 based on Foata normal form. 34/4568 useless extension candidates. Maximal degree in co-relation 37174. Up to 3062 conditions per place. [2024-11-27 23:15:19,760 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 511 selfloop transitions, 106 changer transitions 0/633 dead transitions. [2024-11-27 23:15:19,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 633 transitions, 12253 flow [2024-11-27 23:15:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:15:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 23:15:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 342 transitions. [2024-11-27 23:15:19,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-11-27 23:15:19,762 INFO L175 Difference]: Start difference. First operand has 350 places, 476 transitions, 8621 flow. Second operand 14 states and 342 transitions. [2024-11-27 23:15:19,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 633 transitions, 12253 flow [2024-11-27 23:15:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 633 transitions, 11773 flow, removed 195 selfloop flow, removed 3 redundant places. [2024-11-27 23:15:20,382 INFO L231 Difference]: Finished difference. Result has 369 places, 515 transitions, 9580 flow [2024-11-27 23:15:20,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8238, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9580, PETRI_PLACES=369, PETRI_TRANSITIONS=515} [2024-11-27 23:15:20,383 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 322 predicate places. [2024-11-27 23:15:20,383 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 515 transitions, 9580 flow [2024-11-27 23:15:20,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:20,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:20,383 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:20,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:15:20,384 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:20,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash 62440337, now seen corresponding path program 2 times [2024-11-27 23:15:20,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:20,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29123985] [2024-11-27 23:15:20,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:15:20,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:20,401 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:15:20,401 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29123985] [2024-11-27 23:15:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29123985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:20,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:20,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654753546] [2024-11-27 23:15:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:20,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:20,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:20,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:20,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:20,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 515 transitions, 9580 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:20,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:20,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:20,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:22,942 INFO L124 PetriNetUnfolderBase]: 2438/5332 cut-off events. [2024-11-27 23:15:22,942 INFO L125 PetriNetUnfolderBase]: For 185661/185762 co-relation queries the response was YES. [2024-11-27 23:15:22,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43064 conditions, 5332 events. 2438/5332 cut-off events. For 185661/185762 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 40172 event pairs, 1038 based on Foata normal form. 33/5308 useless extension candidates. Maximal degree in co-relation 42850. Up to 3204 conditions per place. [2024-11-27 23:15:23,014 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 480 selfloop transitions, 196 changer transitions 0/691 dead transitions. [2024-11-27 23:15:23,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 691 transitions, 14169 flow [2024-11-27 23:15:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:15:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 23:15:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 365 transitions. [2024-11-27 23:15:23,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-11-27 23:15:23,015 INFO L175 Difference]: Start difference. First operand has 369 places, 515 transitions, 9580 flow. Second operand 15 states and 365 transitions. [2024-11-27 23:15:23,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 691 transitions, 14169 flow [2024-11-27 23:15:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 691 transitions, 13769 flow, removed 197 selfloop flow, removed 1 redundant places. [2024-11-27 23:15:23,801 INFO L231 Difference]: Finished difference. Result has 391 places, 549 transitions, 10655 flow [2024-11-27 23:15:23,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9304, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10655, PETRI_PLACES=391, PETRI_TRANSITIONS=549} [2024-11-27 23:15:23,802 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 344 predicate places. [2024-11-27 23:15:23,802 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 549 transitions, 10655 flow [2024-11-27 23:15:23,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:23,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:23,802 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:23,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 23:15:23,803 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:23,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1785324991, now seen corresponding path program 3 times [2024-11-27 23:15:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899706229] [2024-11-27 23:15:23,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:15:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:23,813 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:15:23,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:23,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899706229] [2024-11-27 23:15:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899706229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:23,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076691259] [2024-11-27 23:15:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:23,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:23,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:23,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:23,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:23,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 549 transitions, 10655 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:23,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:23,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:23,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:26,820 INFO L124 PetriNetUnfolderBase]: 2646/5761 cut-off events. [2024-11-27 23:15:26,820 INFO L125 PetriNetUnfolderBase]: For 220614/220682 co-relation queries the response was YES. [2024-11-27 23:15:26,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49178 conditions, 5761 events. 2646/5761 cut-off events. For 220614/220682 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 44134 event pairs, 1044 based on Foata normal form. 26/5731 useless extension candidates. Maximal degree in co-relation 48949. Up to 3204 conditions per place. [2024-11-27 23:15:26,911 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 573 selfloop transitions, 170 changer transitions 0/758 dead transitions. [2024-11-27 23:15:26,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 758 transitions, 16009 flow [2024-11-27 23:15:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:15:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:15:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 425 transitions. [2024-11-27 23:15:26,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5023640661938534 [2024-11-27 23:15:26,913 INFO L175 Difference]: Start difference. First operand has 391 places, 549 transitions, 10655 flow. Second operand 18 states and 425 transitions. [2024-11-27 23:15:26,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 758 transitions, 16009 flow [2024-11-27 23:15:28,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 758 transitions, 15707 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:28,162 INFO L231 Difference]: Finished difference. Result has 418 places, 609 transitions, 12341 flow [2024-11-27 23:15:28,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10375, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12341, PETRI_PLACES=418, PETRI_TRANSITIONS=609} [2024-11-27 23:15:28,163 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 371 predicate places. [2024-11-27 23:15:28,163 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 609 transitions, 12341 flow [2024-11-27 23:15:28,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:28,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:28,163 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:28,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 23:15:28,163 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:28,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1541206487, now seen corresponding path program 6 times [2024-11-27 23:15:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:28,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412107735] [2024-11-27 23:15:28,164 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:15:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:28,177 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:15:28,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:28,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:28,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412107735] [2024-11-27 23:15:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412107735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:28,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117461482] [2024-11-27 23:15:28,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:28,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:28,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:28,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:28,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 609 transitions, 12341 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:28,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:28,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:28,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:31,117 INFO L124 PetriNetUnfolderBase]: 2656/5809 cut-off events. [2024-11-27 23:15:31,117 INFO L125 PetriNetUnfolderBase]: For 287052/287159 co-relation queries the response was YES. [2024-11-27 23:15:31,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54787 conditions, 5809 events. 2656/5809 cut-off events. For 287052/287159 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 45163 event pairs, 793 based on Foata normal form. 51/5807 useless extension candidates. Maximal degree in co-relation 54549. Up to 2666 conditions per place. [2024-11-27 23:15:31,195 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 502 selfloop transitions, 276 changer transitions 0/791 dead transitions. [2024-11-27 23:15:31,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 791 transitions, 17278 flow [2024-11-27 23:15:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:15:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 23:15:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 400 transitions. [2024-11-27 23:15:31,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5006257822277848 [2024-11-27 23:15:31,196 INFO L175 Difference]: Start difference. First operand has 418 places, 609 transitions, 12341 flow. Second operand 17 states and 400 transitions. [2024-11-27 23:15:31,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 791 transitions, 17278 flow [2024-11-27 23:15:32,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 791 transitions, 16778 flow, removed 120 selfloop flow, removed 4 redundant places. [2024-11-27 23:15:32,703 INFO L231 Difference]: Finished difference. Result has 443 places, 653 transitions, 14354 flow [2024-11-27 23:15:32,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11916, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14354, PETRI_PLACES=443, PETRI_TRANSITIONS=653} [2024-11-27 23:15:32,704 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 396 predicate places. [2024-11-27 23:15:32,704 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 653 transitions, 14354 flow [2024-11-27 23:15:32,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:32,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:32,705 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:32,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 23:15:32,705 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:32,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2016811913, now seen corresponding path program 4 times [2024-11-27 23:15:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:32,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953087291] [2024-11-27 23:15:32,707 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:15:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:32,723 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:15:32,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953087291] [2024-11-27 23:15:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953087291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:33,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138226495] [2024-11-27 23:15:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:33,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:33,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:33,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:33,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:33,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 653 transitions, 14354 flow. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:33,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:33,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:33,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:36,477 INFO L124 PetriNetUnfolderBase]: 2927/6350 cut-off events. [2024-11-27 23:15:36,477 INFO L125 PetriNetUnfolderBase]: For 342724/342915 co-relation queries the response was YES. [2024-11-27 23:15:36,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61365 conditions, 6350 events. 2927/6350 cut-off events. For 342724/342915 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 49536 event pairs, 1165 based on Foata normal form. 44/6323 useless extension candidates. Maximal degree in co-relation 61103. Up to 3472 conditions per place. [2024-11-27 23:15:36,588 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 631 selfloop transitions, 225 changer transitions 0/873 dead transitions. [2024-11-27 23:15:36,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 873 transitions, 21232 flow [2024-11-27 23:15:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:15:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:15:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 417 transitions. [2024-11-27 23:15:36,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-11-27 23:15:36,590 INFO L175 Difference]: Start difference. First operand has 443 places, 653 transitions, 14354 flow. Second operand 18 states and 417 transitions. [2024-11-27 23:15:36,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 873 transitions, 21232 flow [2024-11-27 23:15:38,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 873 transitions, 20460 flow, removed 384 selfloop flow, removed 1 redundant places. [2024-11-27 23:15:38,661 INFO L231 Difference]: Finished difference. Result has 470 places, 715 transitions, 16345 flow [2024-11-27 23:15:38,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13786, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16345, PETRI_PLACES=470, PETRI_TRANSITIONS=715} [2024-11-27 23:15:38,662 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 423 predicate places. [2024-11-27 23:15:38,662 INFO L471 AbstractCegarLoop]: Abstraction has has 470 places, 715 transitions, 16345 flow [2024-11-27 23:15:38,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:38,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:38,662 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 23:15:38,662 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:38,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash 609457903, now seen corresponding path program 7 times [2024-11-27 23:15:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228118890] [2024-11-27 23:15:38,664 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:15:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:39,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228118890] [2024-11-27 23:15:39,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228118890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:39,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:39,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138049258] [2024-11-27 23:15:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:39,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:39,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:39,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:39,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:39,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-27 23:15:39,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 715 transitions, 16345 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:39,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:39,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-27 23:15:39,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:42,718 INFO L124 PetriNetUnfolderBase]: 2764/6169 cut-off events. [2024-11-27 23:15:42,718 INFO L125 PetriNetUnfolderBase]: For 390682/390719 co-relation queries the response was YES. [2024-11-27 23:15:43,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63571 conditions, 6169 events. 2764/6169 cut-off events. For 390682/390719 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50086 event pairs, 708 based on Foata normal form. 36/6127 useless extension candidates. Maximal degree in co-relation 63298. Up to 3969 conditions per place. [2024-11-27 23:15:43,080 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 743 selfloop transitions, 163 changer transitions 0/927 dead transitions. [2024-11-27 23:15:43,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 927 transitions, 22316 flow [2024-11-27 23:15:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:15:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 23:15:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 432 transitions. [2024-11-27 23:15:43,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5406758448060075 [2024-11-27 23:15:43,081 INFO L175 Difference]: Start difference. First operand has 470 places, 715 transitions, 16345 flow. Second operand 17 states and 432 transitions. [2024-11-27 23:15:43,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 927 transitions, 22316 flow [2024-11-27 23:15:45,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 927 transitions, 21865 flow, removed 222 selfloop flow, removed 2 redundant places. [2024-11-27 23:15:45,107 INFO L231 Difference]: Finished difference. Result has 493 places, 773 transitions, 18423 flow [2024-11-27 23:15:45,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16012, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18423, PETRI_PLACES=493, PETRI_TRANSITIONS=773} [2024-11-27 23:15:45,108 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 446 predicate places. [2024-11-27 23:15:45,108 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 773 transitions, 18423 flow [2024-11-27 23:15:45,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:45,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:45,109 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:45,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 23:15:45,109 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:45,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 975781883, now seen corresponding path program 5 times [2024-11-27 23:15:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309304345] [2024-11-27 23:15:45,111 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:15:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:45,143 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:15:45,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-27 23:15:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309304345] [2024-11-27 23:15:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309304345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:15:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051189751] [2024-11-27 23:15:45,599 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:15:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:15:45,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:15:45,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:15:45,837 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:15:45,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:45,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:15:45,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:15:46,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 23:15:46,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-27 23:15:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:15:46,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:15:46,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051189751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:46,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:15:46,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-27 23:15:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969505876] [2024-11-27 23:15:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:46,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:46,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:46,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:15:46,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:46,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 773 transitions, 18423 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:46,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:46,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:46,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:49,864 INFO L124 PetriNetUnfolderBase]: 3276/7044 cut-off events. [2024-11-27 23:15:49,864 INFO L125 PetriNetUnfolderBase]: For 449927/450142 co-relation queries the response was YES. [2024-11-27 23:15:49,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72723 conditions, 7044 events. 3276/7044 cut-off events. For 449927/450142 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 55887 event pairs, 1287 based on Foata normal form. 44/7009 useless extension candidates. Maximal degree in co-relation 72439. Up to 3911 conditions per place. [2024-11-27 23:15:49,994 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 736 selfloop transitions, 199 changer transitions 0/952 dead transitions. [2024-11-27 23:15:49,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 952 transitions, 24781 flow [2024-11-27 23:15:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:15:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 23:15:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 424 transitions. [2024-11-27 23:15:49,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-11-27 23:15:49,996 INFO L175 Difference]: Start difference. First operand has 493 places, 773 transitions, 18423 flow. Second operand 18 states and 424 transitions. [2024-11-27 23:15:49,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 952 transitions, 24781 flow [2024-11-27 23:15:52,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 952 transitions, 23954 flow, removed 389 selfloop flow, removed 4 redundant places. [2024-11-27 23:15:52,973 INFO L231 Difference]: Finished difference. Result has 514 places, 804 transitions, 19383 flow [2024-11-27 23:15:52,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17814, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19383, PETRI_PLACES=514, PETRI_TRANSITIONS=804} [2024-11-27 23:15:52,975 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 467 predicate places. [2024-11-27 23:15:52,975 INFO L471 AbstractCegarLoop]: Abstraction has has 514 places, 804 transitions, 19383 flow [2024-11-27 23:15:52,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:52,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:15:52,975 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:52,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:15:53,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cedc2db-433b-4c58-9639-09f553c301dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:53,176 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:15:53,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 665986217, now seen corresponding path program 8 times [2024-11-27 23:15:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:53,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747115558] [2024-11-27 23:15:53,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:15:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:53,190 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:15:53,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:15:53,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:53,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747115558] [2024-11-27 23:15:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747115558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:53,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:53,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:15:53,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185738723] [2024-11-27 23:15:53,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:53,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:15:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:53,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:15:53,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:15:53,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:15:53,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 804 transitions, 19383 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:53,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:15:53,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:15:53,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:15:57,282 INFO L124 PetriNetUnfolderBase]: 3197/6933 cut-off events. [2024-11-27 23:15:57,282 INFO L125 PetriNetUnfolderBase]: For 493954/494064 co-relation queries the response was YES. [2024-11-27 23:15:57,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75060 conditions, 6933 events. 3197/6933 cut-off events. For 493954/494064 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 55542 event pairs, 1097 based on Foata normal form. 46/6916 useless extension candidates. Maximal degree in co-relation 74767. Up to 3180 conditions per place. [2024-11-27 23:15:57,629 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 671 selfloop transitions, 261 changer transitions 0/947 dead transitions. [2024-11-27 23:15:57,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 947 transitions, 23998 flow [2024-11-27 23:15:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:15:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-27 23:15:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 402 transitions. [2024-11-27 23:15:57,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-11-27 23:15:57,631 INFO L175 Difference]: Start difference. First operand has 514 places, 804 transitions, 19383 flow. Second operand 16 states and 402 transitions. [2024-11-27 23:15:57,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 947 transitions, 23998 flow [2024-11-27 23:16:00,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 947 transitions, 23431 flow, removed 192 selfloop flow, removed 3 redundant places. [2024-11-27 23:16:00,536 INFO L231 Difference]: Finished difference. Result has 535 places, 833 transitions, 20597 flow [2024-11-27 23:16:00,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=18897, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20597, PETRI_PLACES=535, PETRI_TRANSITIONS=833} [2024-11-27 23:16:00,537 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 488 predicate places. [2024-11-27 23:16:00,537 INFO L471 AbstractCegarLoop]: Abstraction has has 535 places, 833 transitions, 20597 flow [2024-11-27 23:16:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:00,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:16:00,537 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:00,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 23:16:00,537 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:16:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -707342309, now seen corresponding path program 9 times [2024-11-27 23:16:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109184383] [2024-11-27 23:16:00,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:00,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:16:00,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:16:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109184383] [2024-11-27 23:16:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109184383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:16:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174121419] [2024-11-27 23:16:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:00,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:16:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:00,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:16:00,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:16:00,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:16:00,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 833 transitions, 20597 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:00,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:16:00,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:16:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:16:05,154 INFO L124 PetriNetUnfolderBase]: 3420/7392 cut-off events. [2024-11-27 23:16:05,154 INFO L125 PetriNetUnfolderBase]: For 593543/593679 co-relation queries the response was YES. [2024-11-27 23:16:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82955 conditions, 7392 events. 3420/7392 cut-off events. For 593543/593679 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 59946 event pairs, 1059 based on Foata normal form. 45/7363 useless extension candidates. Maximal degree in co-relation 82653. Up to 3138 conditions per place. [2024-11-27 23:16:05,272 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 653 selfloop transitions, 378 changer transitions 0/1046 dead transitions. [2024-11-27 23:16:05,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1046 transitions, 27049 flow [2024-11-27 23:16:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:16:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 23:16:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 552 transitions. [2024-11-27 23:16:05,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-11-27 23:16:05,274 INFO L175 Difference]: Start difference. First operand has 535 places, 833 transitions, 20597 flow. Second operand 23 states and 552 transitions. [2024-11-27 23:16:05,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1046 transitions, 27049 flow [2024-11-27 23:16:09,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1046 transitions, 26496 flow, removed 176 selfloop flow, removed 3 redundant places. [2024-11-27 23:16:09,225 INFO L231 Difference]: Finished difference. Result has 567 places, 900 transitions, 23523 flow [2024-11-27 23:16:09,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=20056, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=23523, PETRI_PLACES=567, PETRI_TRANSITIONS=900} [2024-11-27 23:16:09,226 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 520 predicate places. [2024-11-27 23:16:09,226 INFO L471 AbstractCegarLoop]: Abstraction has has 567 places, 900 transitions, 23523 flow [2024-11-27 23:16:09,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:09,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:16:09,226 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:09,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 23:16:09,227 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:16:09,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1877011679, now seen corresponding path program 10 times [2024-11-27 23:16:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255300755] [2024-11-27 23:16:09,228 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:09,250 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:09,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:16:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255300755] [2024-11-27 23:16:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255300755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:16:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296617194] [2024-11-27 23:16:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:09,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:16:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:09,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:16:09,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:16:09,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-27 23:16:09,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 900 transitions, 23523 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:09,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:16:09,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-27 23:16:09,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:16:14,274 INFO L124 PetriNetUnfolderBase]: 3570/7905 cut-off events. [2024-11-27 23:16:14,274 INFO L125 PetriNetUnfolderBase]: For 717368/717403 co-relation queries the response was YES. [2024-11-27 23:16:14,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91654 conditions, 7905 events. 3570/7905 cut-off events. For 717368/717403 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 67421 event pairs, 850 based on Foata normal form. 34/7818 useless extension candidates. Maximal degree in co-relation 91331. Up to 5080 conditions per place. [2024-11-27 23:16:14,432 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 928 selfloop transitions, 220 changer transitions 0/1171 dead transitions. [2024-11-27 23:16:14,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1171 transitions, 32338 flow [2024-11-27 23:16:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:16:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 23:16:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 423 transitions. [2024-11-27 23:16:14,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-11-27 23:16:14,433 INFO L175 Difference]: Start difference. First operand has 567 places, 900 transitions, 23523 flow. Second operand 17 states and 423 transitions. [2024-11-27 23:16:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1171 transitions, 32338 flow [2024-11-27 23:16:19,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1171 transitions, 30866 flow, removed 658 selfloop flow, removed 3 redundant places. [2024-11-27 23:16:19,660 INFO L231 Difference]: Finished difference. Result has 591 places, 995 transitions, 26389 flow [2024-11-27 23:16:19,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=22652, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=26389, PETRI_PLACES=591, PETRI_TRANSITIONS=995} [2024-11-27 23:16:19,661 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 544 predicate places. [2024-11-27 23:16:19,661 INFO L471 AbstractCegarLoop]: Abstraction has has 591 places, 995 transitions, 26389 flow [2024-11-27 23:16:19,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:19,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:16:19,661 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:19,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 23:16:19,662 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:16:19,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1880579555, now seen corresponding path program 11 times [2024-11-27 23:16:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713293674] [2024-11-27 23:16:19,663 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:16:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:19,687 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:16:19,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 23:16:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713293674] [2024-11-27 23:16:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713293674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:19,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:16:19,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023707155] [2024-11-27 23:16:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:19,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:16:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:19,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:16:19,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:16:20,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:16:20,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 995 transitions, 26389 flow. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:20,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:16:20,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:16:20,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:16:25,596 INFO L124 PetriNetUnfolderBase]: 4176/8962 cut-off events. [2024-11-27 23:16:25,596 INFO L125 PetriNetUnfolderBase]: For 863641/863817 co-relation queries the response was YES. [2024-11-27 23:16:25,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106811 conditions, 8962 events. 4176/8962 cut-off events. For 863641/863817 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 75592 event pairs, 1188 based on Foata normal form. 50/8918 useless extension candidates. Maximal degree in co-relation 106471. Up to 4486 conditions per place. [2024-11-27 23:16:25,752 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 795 selfloop transitions, 465 changer transitions 0/1275 dead transitions. [2024-11-27 23:16:25,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1275 transitions, 35798 flow [2024-11-27 23:16:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:16:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 23:16:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 547 transitions. [2024-11-27 23:16:25,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5060129509713228 [2024-11-27 23:16:25,753 INFO L175 Difference]: Start difference. First operand has 591 places, 995 transitions, 26389 flow. Second operand 23 states and 547 transitions. [2024-11-27 23:16:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1275 transitions, 35798 flow [2024-11-27 23:16:31,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1275 transitions, 34902 flow, removed 396 selfloop flow, removed 7 redundant places. [2024-11-27 23:16:31,791 INFO L231 Difference]: Finished difference. Result has 621 places, 1071 transitions, 30420 flow [2024-11-27 23:16:31,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=25582, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=30420, PETRI_PLACES=621, PETRI_TRANSITIONS=1071} [2024-11-27 23:16:31,793 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 574 predicate places. [2024-11-27 23:16:31,793 INFO L471 AbstractCegarLoop]: Abstraction has has 621 places, 1071 transitions, 30420 flow [2024-11-27 23:16:31,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:31,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:16:31,793 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:31,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 23:16:31,793 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:16:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1540420679, now seen corresponding path program 12 times [2024-11-27 23:16:31,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518449501] [2024-11-27 23:16:31,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:16:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:31,809 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:16:31,809 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-27 23:16:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518449501] [2024-11-27 23:16:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518449501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:16:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991613528] [2024-11-27 23:16:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:31,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:16:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:31,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:16:31,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:16:31,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-27 23:16:31,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1071 transitions, 30420 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:31,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:16:31,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-27 23:16:31,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand