./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:20:23,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:20:23,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 00:20:23,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:20:23,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:20:23,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:20:23,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:20:23,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:20:23,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:20:23,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:20:23,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:20:23,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:20:23,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:20:23,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:20:23,937 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:20:23,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:20:23,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:20:23,939 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:20:23,940 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:23,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:23,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:23,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:20:23,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:23,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:23,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:23,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:23,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:20:23,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:20:23,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:20:23,944 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_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-11-24 00:20:24,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:20:24,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:20:24,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:20:24,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:20:24,285 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:20:24,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-11-24 00:20:27,271 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/data/2a364d408/242c3c4a4dcf493c9b9fa86be8ffaace/FLAG39776dcd0 [2024-11-24 00:20:27,675 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:20:27,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-11-24 00:20:27,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/data/2a364d408/242c3c4a4dcf493c9b9fa86be8ffaace/FLAG39776dcd0 [2024-11-24 00:20:27,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/data/2a364d408/242c3c4a4dcf493c9b9fa86be8ffaace [2024-11-24 00:20:27,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:20:27,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:20:27,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:27,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:20:27,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:20:27,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:27" (1/1) ... [2024-11-24 00:20:27,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c47da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:27, skipping insertion in model container [2024-11-24 00:20:27,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:27" (1/1) ... [2024-11-24 00:20:27,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:20:28,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:28,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:20:28,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:28,626 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:20:28,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28 WrapperNode [2024-11-24 00:20:28,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:28,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:28,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:20:28,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:20:28,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,700 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-24 00:20:28,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:28,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:20:28,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:20:28,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:20:28,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,743 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-24 00:20:28,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,760 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:20:28,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:20:28,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:20:28,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:20:28,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (1/1) ... [2024-11-24 00:20:28,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:28,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:20:28,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:20:28,856 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 00:20:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:20:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:20:28,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:20:28,859 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:20:29,027 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:20:29,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:20:29,414 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:20:29,414 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:20:29,945 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:20:29,945 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:20:29,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:29 BoogieIcfgContainer [2024-11-24 00:20:29,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:20:29,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:20:29,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:20:29,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:20:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:20:27" (1/3) ... [2024-11-24 00:20:29,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f8bc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:29, skipping insertion in model container [2024-11-24 00:20:29,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:28" (2/3) ... [2024-11-24 00:20:29,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f8bc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:29, skipping insertion in model container [2024-11-24 00:20:29,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:29" (3/3) ... [2024-11-24 00:20:29,981 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-11-24 00:20:29,999 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:20:30,001 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_07-tricky_address2.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-24 00:20:30,001 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:20:30,059 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:20:30,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-11-24 00:20:30,139 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-24 00:20:30,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:20:30,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-24 00:20:30,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-11-24 00:20:30,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-11-24 00:20:30,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:20:30,183 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;@a496f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:20:30,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-24 00:20:30,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:20:30,188 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 00:20:30,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:20:30,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:30,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:20:30,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:30,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash 343165, now seen corresponding path program 1 times [2024-11-24 00:20:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51841386] [2024-11-24 00:20:30,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51841386] [2024-11-24 00:20:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51841386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:30,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:20:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479157500] [2024-11-24 00:20:30,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:30,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:20:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:30,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:20:30,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:30,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:30,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-24 00:20:30,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:30,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:30,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:30,801 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2024-11-24 00:20:30,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:20:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 119 events. 37/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 399 event pairs, 36 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 192. Up to 92 conditions per place. [2024-11-24 00:20:30,805 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-24 00:20:30,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2024-11-24 00:20:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:20:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:20:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-24 00:20:30,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-24 00:20:30,826 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2024-11-24 00:20:30,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2024-11-24 00:20:30,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:20:30,838 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-11-24 00:20:30,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-24 00:20:30,845 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-24 00:20:30,845 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-11-24 00:20:30,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-24 00:20:30,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:30,846 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:20:30,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:20:30,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:30,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1633631322, now seen corresponding path program 1 times [2024-11-24 00:20:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340097225] [2024-11-24 00:20:30,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340097225] [2024-11-24 00:20:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340097225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:31,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405199651] [2024-11-24 00:20:31,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:31,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:31,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:31,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:31,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:20:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:31,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:20:31,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:31,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:20:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405199651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:20:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:20:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673402010] [2024-11-24 00:20:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:31,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:20:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:31,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:20:31,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:20:31,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:31,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:31,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:31,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:31,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:31,573 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2024-11-24 00:20:31,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 00:20:31,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 118 events. 37/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 395 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 209. Up to 87 conditions per place. [2024-11-24 00:20:31,575 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-11-24 00:20:31,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2024-11-24 00:20:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:20:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:20:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-24 00:20:31,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-24 00:20:31,581 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2024-11-24 00:20:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2024-11-24 00:20:31,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:20:31,584 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-11-24 00:20:31,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-24 00:20:31,587 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-24 00:20:31,587 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-11-24 00:20:31,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:31,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:31,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 00:20:31,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:20:31,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:31,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:31,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:31,789 INFO L85 PathProgramCache]: Analyzing trace with hash -897036230, now seen corresponding path program 1 times [2024-11-24 00:20:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518456725] [2024-11-24 00:20:31,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:20:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518456725] [2024-11-24 00:20:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518456725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:31,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:20:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471269293] [2024-11-24 00:20:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:31,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:31,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:31,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:31,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:31,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-24 00:20:31,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:31,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:31,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:32,041 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2024-11-24 00:20:32,041 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-24 00:20:32,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 117 events. 37/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 391 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 205. Up to 90 conditions per place. [2024-11-24 00:20:32,042 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-24 00:20:32,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2024-11-24 00:20:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:20:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-24 00:20:32,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-24 00:20:32,052 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2024-11-24 00:20:32,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2024-11-24 00:20:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-24 00:20:32,053 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-24 00:20:32,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-24 00:20:32,054 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-24 00:20:32,055 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-24 00:20:32,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-24 00:20:32,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:32,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:32,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:20:32,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:32,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -266280113, now seen corresponding path program 1 times [2024-11-24 00:20:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343154435] [2024-11-24 00:20:32,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343154435] [2024-11-24 00:20:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343154435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173082183] [2024-11-24 00:20:32,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:32,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:32,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:32,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:20:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:32,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:20:32,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:32,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173082183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:32,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:32,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-24 00:20:32,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088212459] [2024-11-24 00:20:32,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:32,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:20:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:32,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:20:32,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:20:32,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:32,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:32,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:32,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:32,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:32,612 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2024-11-24 00:20:32,612 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-24 00:20:32,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 121 events. 37/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 36 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 198. Up to 88 conditions per place. [2024-11-24 00:20:32,613 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-11-24 00:20:32,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2024-11-24 00:20:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:20:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:20:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-24 00:20:32,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-11-24 00:20:32,617 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2024-11-24 00:20:32,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2024-11-24 00:20:32,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:20:32,619 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-11-24 00:20:32,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-24 00:20:32,620 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-24 00:20:32,620 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-11-24 00:20:32,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:32,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:32,623 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:32,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:20:32,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:32,827 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:32,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:32,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1621929873, now seen corresponding path program 2 times [2024-11-24 00:20:32,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:32,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749459004] [2024-11-24 00:20:32,828 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:20:32,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:32,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:20:32,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:20:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:20:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749459004] [2024-11-24 00:20:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749459004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:34,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:34,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419008988] [2024-11-24 00:20:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:34,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:34,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:34,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:34,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:34,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:20:34,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:34,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:34,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:34,707 INFO L124 PetriNetUnfolderBase]: 43/128 cut-off events. [2024-11-24 00:20:34,707 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-24 00:20:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 128 events. 43/128 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 18 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 222. Up to 73 conditions per place. [2024-11-24 00:20:34,710 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2024-11-24 00:20:34,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 200 flow [2024-11-24 00:20:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:20:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:20:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-24 00:20:34,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-24 00:20:34,712 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2024-11-24 00:20:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 200 flow [2024-11-24 00:20:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:20:34,714 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 115 flow [2024-11-24 00:20:34,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-24 00:20:34,717 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-11-24 00:20:34,718 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 115 flow [2024-11-24 00:20:34,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:20:34,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:34,718 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:34,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:20:34,718 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:34,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1621158921, now seen corresponding path program 1 times [2024-11-24 00:20:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698501683] [2024-11-24 00:20:34,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:34,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698501683] [2024-11-24 00:20:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698501683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654869343] [2024-11-24 00:20:34,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:34,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:34,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:34,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:20:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:35,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:20:35,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:35,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654869343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:35,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:35,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-24 00:20:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962259866] [2024-11-24 00:20:35,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:35,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:20:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:35,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:20:35,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:20:35,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:35,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 115 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2024-11-24 00:20:35,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:35,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:35,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:35,450 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2024-11-24 00:20:35,450 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-24 00:20:35,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 117 events. 27/117 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 26 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 253. Up to 69 conditions per place. [2024-11-24 00:20:35,453 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/38 dead transitions. [2024-11-24 00:20:35,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 225 flow [2024-11-24 00:20:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:20:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:20:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-24 00:20:35,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2024-11-24 00:20:35,455 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 115 flow. Second operand 15 states and 154 transitions. [2024-11-24 00:20:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 225 flow [2024-11-24 00:20:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-24 00:20:35,459 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 203 flow [2024-11-24 00:20:35,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2024-11-24 00:20:35,460 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-11-24 00:20:35,461 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 203 flow [2024-11-24 00:20:35,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2024-11-24 00:20:35,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:35,462 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:35,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:20:35,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:35,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:35,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1399514679, now seen corresponding path program 2 times [2024-11-24 00:20:35,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:35,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874303920] [2024-11-24 00:20:35,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:20:35,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:35,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:20:35,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:20:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-24 00:20:36,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874303920] [2024-11-24 00:20:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874303920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:36,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041999795] [2024-11-24 00:20:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:36,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:36,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:36,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:36,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:36,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:20:36,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:36,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:36,934 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2024-11-24 00:20:36,934 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-24 00:20:36,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 119 events. 30/119 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 319 event pairs, 8 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 208. Up to 51 conditions per place. [2024-11-24 00:20:36,937 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2024-11-24 00:20:36,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 341 flow [2024-11-24 00:20:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:20:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:20:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-24 00:20:36,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-24 00:20:36,939 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 203 flow. Second operand 6 states and 87 transitions. [2024-11-24 00:20:36,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 341 flow [2024-11-24 00:20:36,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 331 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-24 00:20:36,948 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 233 flow [2024-11-24 00:20:36,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2024-11-24 00:20:36,949 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-11-24 00:20:36,951 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 233 flow [2024-11-24 00:20:36,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:20:36,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:36,952 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:36,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:20:36,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:36,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1121964422, now seen corresponding path program 1 times [2024-11-24 00:20:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240247989] [2024-11-24 00:20:36,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240247989] [2024-11-24 00:20:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240247989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677977520] [2024-11-24 00:20:37,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:37,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:37,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:37,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:20:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:37,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:20:37,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:37,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677977520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:37,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:37,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-24 00:20:37,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414681935] [2024-11-24 00:20:37,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:37,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:20:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:37,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:20:37,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:20:37,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:20:37,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 233 flow. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 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) [2024-11-24 00:20:37,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:37,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:20:37,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:38,095 INFO L124 PetriNetUnfolderBase]: 26/123 cut-off events. [2024-11-24 00:20:38,095 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2024-11-24 00:20:38,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 123 events. 26/123 cut-off events. For 168/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 22 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 336. Up to 68 conditions per place. [2024-11-24 00:20:38,098 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2024-11-24 00:20:38,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 367 flow [2024-11-24 00:20:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:20:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-24 00:20:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2024-11-24 00:20:38,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-24 00:20:38,101 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 233 flow. Second operand 21 states and 207 transitions. [2024-11-24 00:20:38,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 367 flow [2024-11-24 00:20:38,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 47 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-24 00:20:38,108 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 336 flow [2024-11-24 00:20:38,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=336, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2024-11-24 00:20:38,109 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-11-24 00:20:38,109 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 336 flow [2024-11-24 00:20:38,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 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) [2024-11-24 00:20:38,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:38,110 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:38,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:20:38,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 00:20:38,314 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:38,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1992772691, now seen corresponding path program 2 times [2024-11-24 00:20:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906949726] [2024-11-24 00:20:38,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:20:38,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:38,426 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:20:38,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:20:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:20:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906949726] [2024-11-24 00:20:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906949726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:42,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:42,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:20:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832687711] [2024-11-24 00:20:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:42,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:20:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:42,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:20:42,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:20:42,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:20:42,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:42,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:42,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:20:42,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:44,082 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2024-11-24 00:20:44,083 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-24 00:20:44,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 184 events. 58/184 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 577 event pairs, 12 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 409. Up to 64 conditions per place. [2024-11-24 00:20:44,084 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2024-11-24 00:20:44,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 632 flow [2024-11-24 00:20:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:20:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 00:20:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-11-24 00:20:44,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33903133903133903 [2024-11-24 00:20:44,087 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 336 flow. Second operand 13 states and 119 transitions. [2024-11-24 00:20:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 632 flow [2024-11-24 00:20:44,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 589 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-24 00:20:44,093 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 416 flow [2024-11-24 00:20:44,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=416, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2024-11-24 00:20:44,094 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-11-24 00:20:44,094 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 416 flow [2024-11-24 00:20:44,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:44,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:44,094 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:44,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:20:44,095 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:44,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1115130977, now seen corresponding path program 3 times [2024-11-24 00:20:44,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:44,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449238184] [2024-11-24 00:20:44,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:20:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:44,144 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:20:44,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:20:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:20:46,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449238184] [2024-11-24 00:20:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449238184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:20:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516893449] [2024-11-24 00:20:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:46,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:20:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:46,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:20:46,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:20:46,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:20:46,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:46,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:46,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:20:46,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:48,432 INFO L124 PetriNetUnfolderBase]: 62/202 cut-off events. [2024-11-24 00:20:48,432 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-24 00:20:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 202 events. 62/202 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 690 event pairs, 16 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 629. Up to 73 conditions per place. [2024-11-24 00:20:48,434 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 59 selfloop transitions, 28 changer transitions 7/95 dead transitions. [2024-11-24 00:20:48,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 777 flow [2024-11-24 00:20:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:20:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:20:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 132 transitions. [2024-11-24 00:20:48,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2875816993464052 [2024-11-24 00:20:48,436 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 416 flow. Second operand 17 states and 132 transitions. [2024-11-24 00:20:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 777 flow [2024-11-24 00:20:48,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 746 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-24 00:20:48,444 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 559 flow [2024-11-24 00:20:48,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=559, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2024-11-24 00:20:48,448 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-11-24 00:20:48,448 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 559 flow [2024-11-24 00:20:48,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:48,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:48,448 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:48,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:20:48,448 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:48,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 531444560, now seen corresponding path program 1 times [2024-11-24 00:20:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:48,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344952179] [2024-11-24 00:20:48,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:20:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344952179] [2024-11-24 00:20:50,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344952179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:50,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:20:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717432000] [2024-11-24 00:20:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:50,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:20:50,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:50,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:20:50,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:20:50,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:20:50,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2024-11-24 00:20:50,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:20:50,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:20:50,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:20:51,295 INFO L124 PetriNetUnfolderBase]: 58/189 cut-off events. [2024-11-24 00:20:51,296 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-11-24 00:20:51,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 189 events. 58/189 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 13 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 641. Up to 63 conditions per place. [2024-11-24 00:20:51,299 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 73 selfloop transitions, 16 changer transitions 4/94 dead transitions. [2024-11-24 00:20:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 871 flow [2024-11-24 00:20:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:20:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 00:20:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-24 00:20:51,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3374485596707819 [2024-11-24 00:20:51,301 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 559 flow. Second operand 9 states and 82 transitions. [2024-11-24 00:20:51,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 871 flow [2024-11-24 00:20:51,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 94 transitions, 831 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-24 00:20:51,312 INFO L231 Difference]: Finished difference. Result has 104 places, 72 transitions, 555 flow [2024-11-24 00:20:51,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=104, PETRI_TRANSITIONS=72} [2024-11-24 00:20:51,313 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-11-24 00:20:51,313 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 72 transitions, 555 flow [2024-11-24 00:20:51,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2024-11-24 00:20:51,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:20:51,314 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:51,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:20:51,314 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:20:51,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2127023525, now seen corresponding path program 4 times [2024-11-24 00:20:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:51,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685152344] [2024-11-24 00:20:51,315 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:20:51,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:51,409 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:20:51,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:21:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685152344] [2024-11-24 00:21:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685152344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525730656] [2024-11-24 00:21:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:12,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:21:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:12,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:21:12,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:21:12,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:21:12,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 72 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:12,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:12,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:21:12,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:31,059 INFO L124 PetriNetUnfolderBase]: 46/179 cut-off events. [2024-11-24 00:21:31,059 INFO L125 PetriNetUnfolderBase]: For 421/427 co-relation queries the response was YES. [2024-11-24 00:21:31,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 179 events. 46/179 cut-off events. For 421/427 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 2 based on Foata normal form. 13/192 useless extension candidates. Maximal degree in co-relation 630. Up to 42 conditions per place. [2024-11-24 00:21:31,061 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 51 selfloop transitions, 28 changer transitions 18/105 dead transitions. [2024-11-24 00:21:31,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 105 transitions, 912 flow [2024-11-24 00:21:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 00:21:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 00:21:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 212 transitions. [2024-11-24 00:21:31,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43621399176954734 [2024-11-24 00:21:31,064 INFO L175 Difference]: Start difference. First operand has 104 places, 72 transitions, 555 flow. Second operand 18 states and 212 transitions. [2024-11-24 00:21:31,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 105 transitions, 912 flow [2024-11-24 00:21:31,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 865 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-24 00:21:31,075 INFO L231 Difference]: Finished difference. Result has 124 places, 72 transitions, 600 flow [2024-11-24 00:21:31,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=600, PETRI_PLACES=124, PETRI_TRANSITIONS=72} [2024-11-24 00:21:31,077 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-11-24 00:21:31,079 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 72 transitions, 600 flow [2024-11-24 00:21:31,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:31,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:31,080 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:31,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:21:31,080 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:21:31,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1373418947, now seen corresponding path program 5 times [2024-11-24 00:21:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:31,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397718240] [2024-11-24 00:21:31,081 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:21:31,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:31,153 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-24 00:21:31,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:35,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397718240] [2024-11-24 00:21:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397718240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255300755] [2024-11-24 00:21:35,064 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:21:35,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:35,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:35,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:35,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:21:35,258 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-24 00:21:35,258 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:35,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-24 00:21:35,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:38,165 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 11 [2024-11-24 00:21:38,670 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:21:38,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 00:21:39,067 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2024-11-24 00:21:39,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 90 treesize of output 141 [2024-11-24 00:21:40,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:21:40,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 455 treesize of output 313 [2024-11-24 00:21:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:21:42,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:43,079 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 21 treesize of output 19 [2024-11-24 00:21:43,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 8 [2024-11-24 00:21:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:21:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255300755] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:21:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26, 24] total 55 [2024-11-24 00:21:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168860288] [2024-11-24 00:21:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:45,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:21:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:45,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:21:45,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2766, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 00:21:45,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-24 00:21:45,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 72 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:45,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:45,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-24 00:21:45,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:46,650 INFO L124 PetriNetUnfolderBase]: 45/185 cut-off events. [2024-11-24 00:21:46,650 INFO L125 PetriNetUnfolderBase]: For 664/668 co-relation queries the response was YES. [2024-11-24 00:21:46,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 185 events. 45/185 cut-off events. For 664/668 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 664 event pairs, 0 based on Foata normal form. 7/192 useless extension candidates. Maximal degree in co-relation 772. Up to 25 conditions per place. [2024-11-24 00:21:46,652 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 61 selfloop transitions, 50 changer transitions 2/118 dead transitions. [2024-11-24 00:21:46,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 118 transitions, 1132 flow [2024-11-24 00:21:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:21:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-24 00:21:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 246 transitions. [2024-11-24 00:21:46,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965 [2024-11-24 00:21:46,654 INFO L175 Difference]: Start difference. First operand has 124 places, 72 transitions, 600 flow. Second operand 24 states and 246 transitions. [2024-11-24 00:21:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 118 transitions, 1132 flow [2024-11-24 00:21:46,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 981 flow, removed 45 selfloop flow, removed 14 redundant places. [2024-11-24 00:21:46,662 INFO L231 Difference]: Finished difference. Result has 130 places, 93 transitions, 798 flow [2024-11-24 00:21:46,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=798, PETRI_PLACES=130, PETRI_TRANSITIONS=93} [2024-11-24 00:21:46,663 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-11-24 00:21:46,663 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 93 transitions, 798 flow [2024-11-24 00:21:46,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:46,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:46,664 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:46,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:21:46,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 00:21:46,864 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:21:46,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash -705087486, now seen corresponding path program 1 times [2024-11-24 00:21:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907142667] [2024-11-24 00:21:46,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:21:50,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907142667] [2024-11-24 00:21:50,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907142667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:50,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:50,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:21:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883511328] [2024-11-24 00:21:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:50,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:21:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:50,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:21:50,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:21:50,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:21:50,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 93 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:50,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:50,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:21:50,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:52,109 INFO L124 PetriNetUnfolderBase]: 45/199 cut-off events. [2024-11-24 00:21:52,109 INFO L125 PetriNetUnfolderBase]: For 559/559 co-relation queries the response was YES. [2024-11-24 00:21:52,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 199 events. 45/199 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 830 event pairs, 13 based on Foata normal form. 3/200 useless extension candidates. Maximal degree in co-relation 796. Up to 101 conditions per place. [2024-11-24 00:21:52,111 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 64 selfloop transitions, 27 changer transitions 12/112 dead transitions. [2024-11-24 00:21:52,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 112 transitions, 1102 flow [2024-11-24 00:21:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:21:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 00:21:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 147 transitions. [2024-11-24 00:21:52,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-11-24 00:21:52,113 INFO L175 Difference]: Start difference. First operand has 130 places, 93 transitions, 798 flow. Second operand 16 states and 147 transitions. [2024-11-24 00:21:52,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 112 transitions, 1102 flow [2024-11-24 00:21:52,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 112 transitions, 1013 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-24 00:21:52,122 INFO L231 Difference]: Finished difference. Result has 137 places, 96 transitions, 797 flow [2024-11-24 00:21:52,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=797, PETRI_PLACES=137, PETRI_TRANSITIONS=96} [2024-11-24 00:21:52,123 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-11-24 00:21:52,124 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 96 transitions, 797 flow [2024-11-24 00:21:52,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:52,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:52,124 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:52,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:21:52,125 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:21:52,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -676488126, now seen corresponding path program 2 times [2024-11-24 00:21:52,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:52,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621565173] [2024-11-24 00:21:52,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:21:52,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:52,171 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:21:52,171 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:21:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621565173] [2024-11-24 00:21:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621565173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:54,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:21:54,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458213402] [2024-11-24 00:21:54,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:54,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:21:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:54,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:21:54,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:21:54,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:21:54,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 96 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:54,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:54,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:21:54,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:55,819 INFO L124 PetriNetUnfolderBase]: 42/192 cut-off events. [2024-11-24 00:21:55,819 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-24 00:21:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 192 events. 42/192 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 775 event pairs, 7 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 765. Up to 91 conditions per place. [2024-11-24 00:21:55,820 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 63 selfloop transitions, 30 changer transitions 7/109 dead transitions. [2024-11-24 00:21:55,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 109 transitions, 1044 flow [2024-11-24 00:21:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:21:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 00:21:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-11-24 00:21:55,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-11-24 00:21:55,822 INFO L175 Difference]: Start difference. First operand has 137 places, 96 transitions, 797 flow. Second operand 14 states and 134 transitions. [2024-11-24 00:21:55,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 109 transitions, 1044 flow [2024-11-24 00:21:55,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 109 transitions, 994 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-24 00:21:55,831 INFO L231 Difference]: Finished difference. Result has 139 places, 95 transitions, 811 flow [2024-11-24 00:21:55,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=811, PETRI_PLACES=139, PETRI_TRANSITIONS=95} [2024-11-24 00:21:55,831 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-11-24 00:21:55,832 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 95 transitions, 811 flow [2024-11-24 00:21:55,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:55,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:55,833 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:55,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:21:55,833 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:21:55,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 185060550, now seen corresponding path program 3 times [2024-11-24 00:21:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075902902] [2024-11-24 00:21:55,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:21:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:55,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:21:55,866 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:21:58,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075902902] [2024-11-24 00:21:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075902902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:58,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:58,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:21:58,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634682575] [2024-11-24 00:21:58,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:58,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:21:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:58,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:21:58,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:21:58,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:21:58,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 95 transitions, 811 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:21:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:59,733 INFO L124 PetriNetUnfolderBase]: 38/180 cut-off events. [2024-11-24 00:21:59,733 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-24 00:21:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 180 events. 38/180 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 672 event pairs, 9 based on Foata normal form. 3/183 useless extension candidates. Maximal degree in co-relation 745. Up to 87 conditions per place. [2024-11-24 00:21:59,738 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 61 selfloop transitions, 23 changer transitions 11/104 dead transitions. [2024-11-24 00:21:59,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 104 transitions, 1038 flow [2024-11-24 00:21:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:21:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:21:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 138 transitions. [2024-11-24 00:21:59,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-11-24 00:21:59,741 INFO L175 Difference]: Start difference. First operand has 139 places, 95 transitions, 811 flow. Second operand 15 states and 138 transitions. [2024-11-24 00:21:59,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 104 transitions, 1038 flow [2024-11-24 00:21:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 104 transitions, 968 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-24 00:21:59,750 INFO L231 Difference]: Finished difference. Result has 140 places, 90 transitions, 758 flow [2024-11-24 00:21:59,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=758, PETRI_PLACES=140, PETRI_TRANSITIONS=90} [2024-11-24 00:21:59,751 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-11-24 00:21:59,752 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 90 transitions, 758 flow [2024-11-24 00:21:59,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:21:59,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:59,753 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:59,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:21:59,753 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:21:59,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1498174714, now seen corresponding path program 1 times [2024-11-24 00:21:59,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:59,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-24 00:21:59,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:03,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-24 00:22:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964590161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:03,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:03,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:22:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267164430] [2024-11-24 00:22:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:03,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:22:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:03,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:22:03,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:22:03,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-24 00:22:03,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 90 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:03,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:03,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-24 00:22:03,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:04,391 INFO L124 PetriNetUnfolderBase]: 44/199 cut-off events. [2024-11-24 00:22:04,391 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2024-11-24 00:22:04,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 199 events. 44/199 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 813 event pairs, 11 based on Foata normal form. 3/202 useless extension candidates. Maximal degree in co-relation 839. Up to 43 conditions per place. [2024-11-24 00:22:04,392 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 82 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-11-24 00:22:04,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 117 transitions, 1157 flow [2024-11-24 00:22:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:22:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 00:22:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-11-24 00:22:04,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-11-24 00:22:04,396 INFO L175 Difference]: Start difference. First operand has 140 places, 90 transitions, 758 flow. Second operand 11 states and 105 transitions. [2024-11-24 00:22:04,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 117 transitions, 1157 flow [2024-11-24 00:22:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 117 transitions, 1092 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-24 00:22:04,405 INFO L231 Difference]: Finished difference. Result has 135 places, 103 transitions, 899 flow [2024-11-24 00:22:04,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=899, PETRI_PLACES=135, PETRI_TRANSITIONS=103} [2024-11-24 00:22:04,406 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-11-24 00:22:04,406 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 103 transitions, 899 flow [2024-11-24 00:22:04,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:04,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:04,406 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:04,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:22:04,406 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:04,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -373685244, now seen corresponding path program 1 times [2024-11-24 00:22:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-24 00:22:04,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-24 00:22:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629511273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:10,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:22:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255690729] [2024-11-24 00:22:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:10,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:22:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:10,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:22:10,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:22:11,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:22:11,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 103 transitions, 899 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:22:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:12,973 INFO L124 PetriNetUnfolderBase]: 40/201 cut-off events. [2024-11-24 00:22:12,973 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-11-24 00:22:12,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 201 events. 40/201 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 884 event pairs, 10 based on Foata normal form. 6/206 useless extension candidates. Maximal degree in co-relation 910. Up to 98 conditions per place. [2024-11-24 00:22:12,975 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 72 selfloop transitions, 22 changer transitions 17/119 dead transitions. [2024-11-24 00:22:12,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 119 transitions, 1267 flow [2024-11-24 00:22:12,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:22:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 00:22:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-11-24 00:22:12,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33101851851851855 [2024-11-24 00:22:12,979 INFO L175 Difference]: Start difference. First operand has 135 places, 103 transitions, 899 flow. Second operand 16 states and 143 transitions. [2024-11-24 00:22:12,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 119 transitions, 1267 flow [2024-11-24 00:22:12,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1230 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-24 00:22:12,989 INFO L231 Difference]: Finished difference. Result has 149 places, 98 transitions, 888 flow [2024-11-24 00:22:12,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=888, PETRI_PLACES=149, PETRI_TRANSITIONS=98} [2024-11-24 00:22:12,990 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-11-24 00:22:12,990 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 98 transitions, 888 flow [2024-11-24 00:22:12,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:12,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:12,991 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:12,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:22:12,991 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:12,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash 195022598, now seen corresponding path program 2 times [2024-11-24 00:22:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240454625] [2024-11-24 00:22:12,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:22:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:13,027 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:22:13,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240454625] [2024-11-24 00:22:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240454625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:22:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140340206] [2024-11-24 00:22:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:15,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:22:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:15,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:22:15,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:22:15,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:22:15,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 98 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:15,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:15,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:22:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:16,770 INFO L124 PetriNetUnfolderBase]: 40/200 cut-off events. [2024-11-24 00:22:16,770 INFO L125 PetriNetUnfolderBase]: For 895/895 co-relation queries the response was YES. [2024-11-24 00:22:16,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 200 events. 40/200 cut-off events. For 895/895 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 10 based on Foata normal form. 6/205 useless extension candidates. Maximal degree in co-relation 928. Up to 98 conditions per place. [2024-11-24 00:22:16,773 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 73 selfloop transitions, 22 changer transitions 13/116 dead transitions. [2024-11-24 00:22:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 116 transitions, 1253 flow [2024-11-24 00:22:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:22:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:22:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 137 transitions. [2024-11-24 00:22:16,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33827160493827163 [2024-11-24 00:22:16,776 INFO L175 Difference]: Start difference. First operand has 149 places, 98 transitions, 888 flow. Second operand 15 states and 137 transitions. [2024-11-24 00:22:16,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 116 transitions, 1253 flow [2024-11-24 00:22:16,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 116 transitions, 1188 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-11-24 00:22:16,786 INFO L231 Difference]: Finished difference. Result has 147 places, 99 transitions, 906 flow [2024-11-24 00:22:16,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=906, PETRI_PLACES=147, PETRI_TRANSITIONS=99} [2024-11-24 00:22:16,787 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-11-24 00:22:16,787 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 99 transitions, 906 flow [2024-11-24 00:22:16,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:16,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:16,787 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:16,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:22:16,787 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:16,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -220561852, now seen corresponding path program 3 times [2024-11-24 00:22:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428696298] [2024-11-24 00:22:16,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:22:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:16,817 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:22:16,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428696298] [2024-11-24 00:22:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428696298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:18,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:18,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:22:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275540918] [2024-11-24 00:22:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:18,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:22:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:18,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:22:18,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:22:18,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:22:18,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 99 transitions, 906 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:18,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:18,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:22:18,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:20,496 INFO L124 PetriNetUnfolderBase]: 34/175 cut-off events. [2024-11-24 00:22:20,496 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-11-24 00:22:20,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 175 events. 34/175 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 9 based on Foata normal form. 3/177 useless extension candidates. Maximal degree in co-relation 759. Up to 77 conditions per place. [2024-11-24 00:22:20,498 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 63 selfloop transitions, 29 changer transitions 8/108 dead transitions. [2024-11-24 00:22:20,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 108 transitions, 1163 flow [2024-11-24 00:22:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:22:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:22:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 154 transitions. [2024-11-24 00:22:20,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3355119825708061 [2024-11-24 00:22:20,500 INFO L175 Difference]: Start difference. First operand has 147 places, 99 transitions, 906 flow. Second operand 17 states and 154 transitions. [2024-11-24 00:22:20,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 108 transitions, 1163 flow [2024-11-24 00:22:20,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 108 transitions, 1104 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-24 00:22:20,509 INFO L231 Difference]: Finished difference. Result has 152 places, 95 transitions, 880 flow [2024-11-24 00:22:20,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=880, PETRI_PLACES=152, PETRI_TRANSITIONS=95} [2024-11-24 00:22:20,510 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-11-24 00:22:20,510 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 95 transitions, 880 flow [2024-11-24 00:22:20,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-24 00:22:20,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:20,510 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:20,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:22:20,511 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:20,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 194276798, now seen corresponding path program 2 times [2024-11-24 00:22:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:20,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206248994] [2024-11-24 00:22:20,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:22:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:20,535 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:22:20,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206248994] [2024-11-24 00:22:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206248994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:22:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50043578] [2024-11-24 00:22:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:22,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:22:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:22,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:22:22,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:22:22,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:22:22,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 95 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2024-11-24 00:22:22,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:22,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:22:22,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:23,750 INFO L124 PetriNetUnfolderBase]: 41/191 cut-off events. [2024-11-24 00:22:23,750 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-24 00:22:23,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 191 events. 41/191 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 743 event pairs, 12 based on Foata normal form. 3/194 useless extension candidates. Maximal degree in co-relation 915. Up to 82 conditions per place. [2024-11-24 00:22:23,752 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 85 selfloop transitions, 30 changer transitions 0/116 dead transitions. [2024-11-24 00:22:23,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 1282 flow [2024-11-24 00:22:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:22:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:22:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 116 transitions. [2024-11-24 00:22:23,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28641975308641976 [2024-11-24 00:22:23,755 INFO L175 Difference]: Start difference. First operand has 152 places, 95 transitions, 880 flow. Second operand 15 states and 116 transitions. [2024-11-24 00:22:23,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 1282 flow [2024-11-24 00:22:23,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 116 transitions, 1210 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-11-24 00:22:23,766 INFO L231 Difference]: Finished difference. Result has 153 places, 104 transitions, 1001 flow [2024-11-24 00:22:23,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1001, PETRI_PLACES=153, PETRI_TRANSITIONS=104} [2024-11-24 00:22:23,769 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-11-24 00:22:23,769 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 104 transitions, 1001 flow [2024-11-24 00:22:23,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2024-11-24 00:22:23,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:23,770 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:23,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:22:23,770 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:23,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -242757172, now seen corresponding path program 3 times [2024-11-24 00:22:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567605066] [2024-11-24 00:22:23,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:22:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:23,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:22:23,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:25,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:25,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567605066] [2024-11-24 00:22:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567605066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:22:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326976497] [2024-11-24 00:22:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:25,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:22:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:25,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:22:25,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:22:25,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:22:25,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 104 transitions, 1001 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2024-11-24 00:22:25,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:25,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:22:25,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:26,955 INFO L124 PetriNetUnfolderBase]: 40/187 cut-off events. [2024-11-24 00:22:26,955 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-11-24 00:22:26,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 187 events. 40/187 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 716 event pairs, 10 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 907. Up to 40 conditions per place. [2024-11-24 00:22:26,956 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 72 selfloop transitions, 50 changer transitions 0/123 dead transitions. [2024-11-24 00:22:26,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 123 transitions, 1401 flow [2024-11-24 00:22:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:22:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:22:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 127 transitions. [2024-11-24 00:22:26,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2766884531590414 [2024-11-24 00:22:26,957 INFO L175 Difference]: Start difference. First operand has 153 places, 104 transitions, 1001 flow. Second operand 17 states and 127 transitions. [2024-11-24 00:22:26,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 123 transitions, 1401 flow [2024-11-24 00:22:26,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 123 transitions, 1322 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-24 00:22:26,967 INFO L231 Difference]: Finished difference. Result has 155 places, 111 transitions, 1146 flow [2024-11-24 00:22:26,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1146, PETRI_PLACES=155, PETRI_TRANSITIONS=111} [2024-11-24 00:22:26,968 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-11-24 00:22:26,968 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 111 transitions, 1146 flow [2024-11-24 00:22:26,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2024-11-24 00:22:26,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:26,968 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:26,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:22:26,968 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:26,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 466160614, now seen corresponding path program 4 times [2024-11-24 00:22:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613365680] [2024-11-24 00:22:26,969 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:22:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:27,008 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:22:27,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613365680] [2024-11-24 00:22:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613365680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:22:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449029996] [2024-11-24 00:22:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:29,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:22:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:29,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:22:29,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:22:29,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:22:29,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 111 transitions, 1146 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:29,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:29,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:22:29,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:31,588 INFO L124 PetriNetUnfolderBase]: 33/186 cut-off events. [2024-11-24 00:22:31,588 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-11-24 00:22:31,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 186 events. 33/186 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 766 event pairs, 5 based on Foata normal form. 3/189 useless extension candidates. Maximal degree in co-relation 930. Up to 93 conditions per place. [2024-11-24 00:22:31,590 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 78 selfloop transitions, 20 changer transitions 10/124 dead transitions. [2024-11-24 00:22:31,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 124 transitions, 1479 flow [2024-11-24 00:22:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:22:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 00:22:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-11-24 00:22:31,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-24 00:22:31,591 INFO L175 Difference]: Start difference. First operand has 155 places, 111 transitions, 1146 flow. Second operand 14 states and 156 transitions. [2024-11-24 00:22:31,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 124 transitions, 1479 flow [2024-11-24 00:22:31,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 124 transitions, 1358 flow, removed 14 selfloop flow, removed 16 redundant places. [2024-11-24 00:22:31,601 INFO L231 Difference]: Finished difference. Result has 155 places, 111 transitions, 1092 flow [2024-11-24 00:22:31,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1092, PETRI_PLACES=155, PETRI_TRANSITIONS=111} [2024-11-24 00:22:31,602 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-11-24 00:22:31,602 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 111 transitions, 1092 flow [2024-11-24 00:22:31,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:31,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:31,603 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:31,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:22:31,603 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:31,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash -392119270, now seen corresponding path program 5 times [2024-11-24 00:22:31,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:31,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426521127] [2024-11-24 00:22:31,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:22:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:31,641 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-24 00:22:31,641 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426521127] [2024-11-24 00:22:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426521127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675499426] [2024-11-24 00:22:35,403 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:22:35,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:35,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:35,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:22:35,632 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-24 00:22:35,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:35,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-24 00:22:35,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:38,118 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 11 [2024-11-24 00:22:38,526 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:22:38,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 00:22:38,854 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2024-11-24 00:22:38,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 90 treesize of output 141 [2024-11-24 00:22:39,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:22:39,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 455 treesize of output 313 [2024-11-24 00:22:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:22:41,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:41,999 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 21 treesize of output 19 [2024-11-24 00:22:42,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 8 [2024-11-24 00:22:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675499426] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:42,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:22:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24, 25] total 55 [2024-11-24 00:22:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110018601] [2024-11-24 00:22:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:42,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:22:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:42,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:22:42,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=2756, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 00:22:42,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:22:42,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 111 transitions, 1092 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:42,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:42,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:22:42,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:43,487 INFO L124 PetriNetUnfolderBase]: 28/166 cut-off events. [2024-11-24 00:22:43,487 INFO L125 PetriNetUnfolderBase]: For 700/701 co-relation queries the response was YES. [2024-11-24 00:22:43,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 166 events. 28/166 cut-off events. For 700/701 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 622 event pairs, 4 based on Foata normal form. 4/170 useless extension candidates. Maximal degree in co-relation 809. Up to 47 conditions per place. [2024-11-24 00:22:43,488 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 53 selfloop transitions, 39 changer transitions 13/119 dead transitions. [2024-11-24 00:22:43,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 119 transitions, 1332 flow [2024-11-24 00:22:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:22:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-24 00:22:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 233 transitions. [2024-11-24 00:22:43,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39225589225589225 [2024-11-24 00:22:43,489 INFO L175 Difference]: Start difference. First operand has 155 places, 111 transitions, 1092 flow. Second operand 22 states and 233 transitions. [2024-11-24 00:22:43,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 119 transitions, 1332 flow [2024-11-24 00:22:43,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 119 transitions, 1283 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-24 00:22:43,497 INFO L231 Difference]: Finished difference. Result has 165 places, 98 transitions, 986 flow [2024-11-24 00:22:43,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=986, PETRI_PLACES=165, PETRI_TRANSITIONS=98} [2024-11-24 00:22:43,498 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-11-24 00:22:43,498 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 98 transitions, 986 flow [2024-11-24 00:22:43,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:43,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:43,498 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:43,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:22:43,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:22:43,699 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:43,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash 679188904, now seen corresponding path program 4 times [2024-11-24 00:22:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859356783] [2024-11-24 00:22:43,699 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:22:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:43,736 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:22:43,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:22:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:22:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859356783] [2024-11-24 00:22:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859356783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:53,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:22:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952752008] [2024-11-24 00:22:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:53,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:22:53,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:53,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:22:53,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:22:53,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-24 00:22:53,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 98 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-24 00:22:53,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:22:53,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-24 00:22:53,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:22:58,079 INFO L124 PetriNetUnfolderBase]: 22/150 cut-off events. [2024-11-24 00:22:58,079 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-11-24 00:22:58,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 150 events. 22/150 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 6 based on Foata normal form. 3/153 useless extension candidates. Maximal degree in co-relation 731. Up to 61 conditions per place. [2024-11-24 00:22:58,081 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 64 selfloop transitions, 16 changer transitions 9/104 dead transitions. [2024-11-24 00:22:58,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 104 transitions, 1182 flow [2024-11-24 00:22:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:22:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 00:22:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-11-24 00:22:58,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-24 00:22:58,084 INFO L175 Difference]: Start difference. First operand has 165 places, 98 transitions, 986 flow. Second operand 13 states and 143 transitions. [2024-11-24 00:22:58,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 104 transitions, 1182 flow [2024-11-24 00:22:58,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 104 transitions, 1064 flow, removed 7 selfloop flow, removed 20 redundant places. [2024-11-24 00:22:58,091 INFO L231 Difference]: Finished difference. Result has 149 places, 94 transitions, 874 flow [2024-11-24 00:22:58,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=149, PETRI_TRANSITIONS=94} [2024-11-24 00:22:58,092 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-11-24 00:22:58,092 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 94 transitions, 874 flow [2024-11-24 00:22:58,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-24 00:22:58,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:22:58,092 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:58,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:22:58,092 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:22:58,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash 533559524, now seen corresponding path program 1 times [2024-11-24 00:22:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270569493] [2024-11-24 00:22:58,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:58,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:23:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270569493] [2024-11-24 00:23:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270569493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:23:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:23:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:23:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063256633] [2024-11-24 00:23:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:23:00,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:23:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:00,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:23:00,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:23:00,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:23:00,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 94 transitions, 874 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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) [2024-11-24 00:23:00,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:23:00,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:23:00,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:23:00,651 INFO L124 PetriNetUnfolderBase]: 22/138 cut-off events. [2024-11-24 00:23:00,651 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2024-11-24 00:23:00,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 138 events. 22/138 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 421 event pairs, 3 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 678. Up to 55 conditions per place. [2024-11-24 00:23:00,653 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 63 selfloop transitions, 10 changer transitions 12/96 dead transitions. [2024-11-24 00:23:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 96 transitions, 1038 flow [2024-11-24 00:23:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:23:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:23:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-11-24 00:23:00,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-11-24 00:23:00,654 INFO L175 Difference]: Start difference. First operand has 149 places, 94 transitions, 874 flow. Second operand 8 states and 76 transitions. [2024-11-24 00:23:00,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 96 transitions, 1038 flow [2024-11-24 00:23:00,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 96 transitions, 974 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-11-24 00:23:00,659 INFO L231 Difference]: Finished difference. Result has 132 places, 84 transitions, 779 flow [2024-11-24 00:23:00,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=779, PETRI_PLACES=132, PETRI_TRANSITIONS=84} [2024-11-24 00:23:00,659 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-11-24 00:23:00,659 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 84 transitions, 779 flow [2024-11-24 00:23:00,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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) [2024-11-24 00:23:00,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:23:00,660 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:00,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:23:00,660 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:23:00,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -801223763, now seen corresponding path program 1 times [2024-11-24 00:23:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894531131] [2024-11-24 00:23:00,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:23:04,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:04,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894531131] [2024-11-24 00:23:04,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894531131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:04,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242642652] [2024-11-24 00:23:04,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:04,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:04,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:04,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:04,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:23:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:04,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-24 00:23:04,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:07,347 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2024-11-24 00:23:07,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 107 treesize of output 155 [2024-11-24 00:23:08,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:23:08,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 485 treesize of output 303 [2024-11-24 00:23:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:23:12,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-24 00:23:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242642652] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:19,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:23:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 24] total 34 [2024-11-24 00:23:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480968336] [2024-11-24 00:23:19,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:23:19,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:23:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:19,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:23:19,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:23:20,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-24 00:23:20,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 84 transitions, 779 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2024-11-24 00:23:20,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:23:20,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-24 00:23:20,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:23:20,566 INFO L124 PetriNetUnfolderBase]: 16/125 cut-off events. [2024-11-24 00:23:20,566 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-11-24 00:23:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 125 events. 16/125 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 0 based on Foata normal form. 3/128 useless extension candidates. Maximal degree in co-relation 648. Up to 51 conditions per place. [2024-11-24 00:23:20,568 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 58 selfloop transitions, 6 changer transitions 19/94 dead transitions. [2024-11-24 00:23:20,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 94 transitions, 1031 flow [2024-11-24 00:23:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:23:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:23:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-24 00:23:20,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-24 00:23:20,569 INFO L175 Difference]: Start difference. First operand has 132 places, 84 transitions, 779 flow. Second operand 7 states and 69 transitions. [2024-11-24 00:23:20,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 94 transitions, 1031 flow [2024-11-24 00:23:20,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 94 transitions, 934 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-24 00:23:20,573 INFO L231 Difference]: Finished difference. Result has 117 places, 75 transitions, 649 flow [2024-11-24 00:23:20,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=117, PETRI_TRANSITIONS=75} [2024-11-24 00:23:20,573 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-11-24 00:23:20,573 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 75 transitions, 649 flow [2024-11-24 00:23:20,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2024-11-24 00:23:20,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:23:20,574 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:20,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:23:20,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:23:20,774 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-24 00:23:20,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1729397739, now seen corresponding path program 2 times [2024-11-24 00:23:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598577299] [2024-11-24 00:23:20,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:23:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:20,811 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:23:20,811 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:23:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-24 00:23:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598577299] [2024-11-24 00:23:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598577299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286720032] [2024-11-24 00:23:26,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:23:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:26,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:26,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:23:26,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:23:26,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:23:26,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-24 00:23:26,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:29,981 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2024-11-24 00:23:29,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 107 treesize of output 155 [2024-11-24 00:23:32,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:23:32,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 485 treesize of output 303 [2024-11-24 00:23:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:23:36,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-24 00:24:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286720032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:24:11,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:24:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 6] total 34 [2024-11-24 00:24:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852747005] [2024-11-24 00:24:11,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:24:11,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 00:24:11,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:11,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 00:24:11,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:24:14,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-24 00:24:14,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 75 transitions, 649 flow. Second operand has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 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) [2024-11-24 00:24:14,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:24:14,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-24 00:24:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:24:29,018 INFO L124 PetriNetUnfolderBase]: 9/88 cut-off events. [2024-11-24 00:24:29,018 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2024-11-24 00:24:29,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 88 events. 9/88 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 180 event pairs, 0 based on Foata normal form. 9/97 useless extension candidates. Maximal degree in co-relation 443. Up to 14 conditions per place. [2024-11-24 00:24:29,019 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-11-24 00:24:29,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 73 transitions, 762 flow [2024-11-24 00:24:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 00:24:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-24 00:24:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 162 transitions. [2024-11-24 00:24:29,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2 [2024-11-24 00:24:29,022 INFO L175 Difference]: Start difference. First operand has 117 places, 75 transitions, 649 flow. Second operand 30 states and 162 transitions. [2024-11-24 00:24:29,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 73 transitions, 762 flow [2024-11-24 00:24:29,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 73 transitions, 688 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-24 00:24:29,025 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2024-11-24 00:24:29,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2024-11-24 00:24:29,025 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-11-24 00:24:29,025 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2024-11-24 00:24:29,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 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) [2024-11-24 00:24:29,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-11-24 00:24:29,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-24 00:24:29,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-24 00:24:29,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-24 00:24:29,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-11-24 00:24:29,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-24 00:24:29,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-24 00:24:29,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-24 00:24:29,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-24 00:24:29,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:24:29,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:24:29,232 INFO L422 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-24 00:24:29,236 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 00:24:29,236 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:24:29,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:24:29 BasicIcfg [2024-11-24 00:24:29,244 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:24:29,245 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:24:29,245 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:24:29,245 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:24:29,246 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:29" (3/4) ... [2024-11-24 00:24:29,247 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 00:24:29,249 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-24 00:24:29,253 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2024-11-24 00:24:29,253 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-24 00:24:29,254 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 00:24:29,332 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:24:29,332 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:24:29,332 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:24:29,333 INFO L158 Benchmark]: Toolchain (without parser) took 241617.50ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 116.9MB in the beginning and 552.4MB in the end (delta: -435.5MB). Peak memory consumption was 621.8MB. Max. memory is 16.1GB. [2024-11-24 00:24:29,333 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:24:29,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 910.47ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 86.9MB in the end (delta: 29.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 00:24:29,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.98ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 84.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:24:29,334 INFO L158 Benchmark]: Boogie Preprocessor took 71.57ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:24:29,334 INFO L158 Benchmark]: RCFGBuilder took 1168.25ms. Allocated memory is still 142.6MB. Free memory was 82.5MB in the beginning and 49.3MB in the end (delta: 33.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-24 00:24:29,335 INFO L158 Benchmark]: TraceAbstraction took 239296.99ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 49.3MB in the beginning and 557.2MB in the end (delta: -507.9MB). Peak memory consumption was 549.1MB. Max. memory is 16.1GB. [2024-11-24 00:24:29,335 INFO L158 Benchmark]: Witness Printer took 87.32ms. Allocated memory is still 1.2GB. Free memory was 557.2MB in the beginning and 552.4MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:24:29,337 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 910.47ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 86.9MB in the end (delta: 29.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.98ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 84.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 71.57ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1168.25ms. Allocated memory is still 142.6MB. Free memory was 82.5MB in the beginning and 49.3MB in the end (delta: 33.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * TraceAbstraction took 239296.99ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 49.3MB in the beginning and 557.2MB in the end (delta: -507.9MB). Peak memory consumption was 549.1MB. Max. memory is 16.1GB. * Witness Printer took 87.32ms. Allocated memory is still 1.2GB. Free memory was 557.2MB in the beginning and 552.4MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 239.1s, OverallIterations: 28, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 65.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1495 SdHoareTripleChecker+Valid, 18.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1348 mSDsluCounter, 2891 SdHoareTripleChecker+Invalid, 16.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2810 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6014 IncrementalHoareTripleChecker+Invalid, 6179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 81 mSDtfsCounter, 6014 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 906 GetRequests, 243 SyntacticMatches, 85 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10309 ImplicationChecksByTransitivity, 113.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1146occurred in iteration=22, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 168.8s InterpolantComputationTime, 1215 NumberOfCodeBlocks, 945 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1404 ConstructedInterpolants, 152 QuantifiedInterpolants, 110798 SizeOfPredicates, 90 NumberOfNonLiveVariables, 2054 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 43 InterpolantComputations, 24 PerfectInterpolantSequences, 3519/4407 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-24 00:24:29,547 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-24 00:24:29,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff940f1-dd82-406d-9d40-72e31a635b99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE