./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1 --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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:47:16,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:47:16,476 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:47:16,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:47:16,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:47:16,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:47:16,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:47:16,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:47:16,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:47:16,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:47:16,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:47:16,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:47:16,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:47:16,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:47:16,502 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:47:16,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:47:16,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:47:16,504 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:16,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:16,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:16,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:47:16,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:47:16,505 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_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1 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 -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2024-12-02 12:47:16,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:47:16,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:47:16,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:47:16,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:47:16,759 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:47:16,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-12-02 12:47:19,416 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/data/5c26f9e73/b6391b2030134d65a5474be3c9ae4811/FLAGbab13bcf6 [2024-12-02 12:47:19,692 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:47:19,692 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-12-02 12:47:19,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/data/5c26f9e73/b6391b2030134d65a5474be3c9ae4811/FLAGbab13bcf6 [2024-12-02 12:47:20,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/data/5c26f9e73/b6391b2030134d65a5474be3c9ae4811 [2024-12-02 12:47:20,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:47:20,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:47:20,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:20,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:47:20,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:47:20,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539dd7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20, skipping insertion in model container [2024-12-02 12:47:20,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:47:20,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:20,454 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:47:20,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:20,555 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:47:20,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20 WrapperNode [2024-12-02 12:47:20,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:20,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:20,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:47:20,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:47:20,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,601 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2024-12-02 12:47:20,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:20,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:47:20,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:47:20,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:47:20,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,635 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]. [2024-12-02 12:47:20,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,643 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:47:20,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:47:20,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:47:20,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:47:20,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (1/1) ... [2024-12-02 12:47:20,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:20,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:47:20,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 12:47:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:47:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:47:20,719 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:47:20,816 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:47:20,817 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:47:21,084 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:47:21,084 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:47:21,449 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:47:21,449 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:47:21,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:47:21 BoogieIcfgContainer [2024-12-02 12:47:21,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:47:21,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:47:21,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:47:21,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:47:21,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:47:20" (1/3) ... [2024-12-02 12:47:21,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fdef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:47:21, skipping insertion in model container [2024-12-02 12:47:21,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:20" (2/3) ... [2024-12-02 12:47:21,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fdef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:47:21, skipping insertion in model container [2024-12-02 12:47:21,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:47:21" (3/3) ... [2024-12-02 12:47:21,459 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2024-12-02 12:47:21,475 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:47:21,477 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_08-tricky_address3.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 8 error locations. [2024-12-02 12:47:21,477 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:47:21,518 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 12:47:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2024-12-02 12:47:21,583 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-12-02 12:47:21,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:47:21,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 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. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-12-02 12:47:21,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2024-12-02 12:47:21,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2024-12-02 12:47:21,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:47:21,612 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;@7bc63c8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:47:21,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-02 12:47:21,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:47:21,618 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 12:47:21,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:47:21,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:21,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:47:21,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:21,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash 352925, now seen corresponding path program 1 times [2024-12-02 12:47:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:21,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056807470] [2024-12-02 12:47:21,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:21,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056807470] [2024-12-02 12:47:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056807470] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:21,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:47:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396774190] [2024-12-02 12:47:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:21,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:47:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:21,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:47:21,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:47:21,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:21,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:21,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:21,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:21,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:22,099 INFO L124 PetriNetUnfolderBase]: 43/147 cut-off events. [2024-12-02 12:47:22,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:47:22,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 147 events. 43/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 550 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 233. Up to 105 conditions per place. [2024-12-02 12:47:22,102 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-12-02 12:47:22,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 111 flow [2024-12-02 12:47:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:47:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:47:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-12-02 12:47:22,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-12-02 12:47:22,117 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 69 transitions. [2024-12-02 12:47:22,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 111 flow [2024-12-02 12:47:22,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:47:22,125 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-12-02 12:47:22,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-12-02 12:47:22,131 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-12-02 12:47:22,132 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-12-02 12:47:22,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:22,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:22,132 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 12:47:22,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:47:22,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:22,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1924399320, now seen corresponding path program 1 times [2024-12-02 12:47:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161695425] [2024-12-02 12:47:22,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:22,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161695425] [2024-12-02 12:47:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161695425] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433595098] [2024-12-02 12:47:22,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:22,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:22,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:22,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:47:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:22,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:47:22,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:22,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433595098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:47:22,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985817496] [2024-12-02 12:47:22,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:22,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:47:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:22,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:47:22,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:47:22,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:22,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:22,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:22,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:22,613 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2024-12-02 12:47:22,613 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:47:22,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 250. Up to 100 conditions per place. [2024-12-02 12:47:22,615 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-12-02 12:47:22,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 124 flow [2024-12-02 12:47:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:47:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:47:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-12-02 12:47:22,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-12-02 12:47:22,617 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 6 states and 88 transitions. [2024-12-02 12:47:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 124 flow [2024-12-02 12:47:22,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:47:22,618 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 92 flow [2024-12-02 12:47:22,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-12-02 12:47:22,619 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-12-02 12:47:22,619 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 92 flow [2024-12-02 12:47:22,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:22,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:22,620 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 12:47:22,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:47:22,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:22,821 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:22,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -473162876, now seen corresponding path program 1 times [2024-12-02 12:47:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:22,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094793081] [2024-12-02 12:47:22,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:47:22,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:22,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094793081] [2024-12-02 12:47:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094793081] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:22,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:22,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:47:22,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34726605] [2024-12-02 12:47:22,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:22,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:47:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:22,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:47:22,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:47:22,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:22,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:22,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:22,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:22,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:22,972 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2024-12-02 12:47:22,972 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 12:47:22,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 145 events. 43/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 246. Up to 103 conditions per place. [2024-12-02 12:47:22,974 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-12-02 12:47:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 128 flow [2024-12-02 12:47:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:47:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:47:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-12-02 12:47:22,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-12-02 12:47:22,975 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 92 flow. Second operand 3 states and 52 transitions. [2024-12-02 12:47:22,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 128 flow [2024-12-02 12:47:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-12-02 12:47:22,976 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2024-12-02 12:47:22,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-12-02 12:47:22,977 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-12-02 12:47:22,977 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2024-12-02 12:47:22,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:22,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:22,978 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:22,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:47:22,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:22,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash 134147993, now seen corresponding path program 1 times [2024-12-02 12:47:22,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236019671] [2024-12-02 12:47:22,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:23,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236019671] [2024-12-02 12:47:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236019671] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685837856] [2024-12-02 12:47:23,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:23,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:23,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:23,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:23,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:47:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:23,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:47:23,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:23,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:47:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685837856] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:47:23,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:47:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 12:47:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812134642] [2024-12-02 12:47:23,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:47:23,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:47:23,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:23,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:47:23,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:47:23,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:23,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:23,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:23,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:23,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:23,379 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2024-12-02 12:47:23,379 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-12-02 12:47:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 149 events. 43/149 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 544 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 239. Up to 101 conditions per place. [2024-12-02 12:47:23,381 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2024-12-02 12:47:23,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 135 flow [2024-12-02 12:47:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:47:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:47:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-12-02 12:47:23,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-12-02 12:47:23,382 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 7 states and 102 transitions. [2024-12-02 12:47:23,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 135 flow [2024-12-02 12:47:23,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:47:23,384 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 100 flow [2024-12-02 12:47:23,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-12-02 12:47:23,385 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-12-02 12:47:23,385 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 100 flow [2024-12-02 12:47:23,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:23,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:23,386 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:23,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:47:23,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:23,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:23,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1470219911, now seen corresponding path program 2 times [2024-12-02 12:47:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600042867] [2024-12-02 12:47:23,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:47:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:23,627 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:47:23,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:47:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:47:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600042867] [2024-12-02 12:47:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600042867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:47:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375939346] [2024-12-02 12:47:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:24,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:47:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:24,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:47:24,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:47:24,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:24,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:24,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:24,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:24,869 INFO L124 PetriNetUnfolderBase]: 49/151 cut-off events. [2024-12-02 12:47:24,869 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-12-02 12:47:24,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 151 events. 49/151 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 499 event pairs, 20 based on Foata normal form. 8/150 useless extension candidates. Maximal degree in co-relation 258. Up to 79 conditions per place. [2024-12-02 12:47:24,870 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 5 changer transitions 6/50 dead transitions. [2024-12-02 12:47:24,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 218 flow [2024-12-02 12:47:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:47:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:47:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-12-02 12:47:24,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-12-02 12:47:24,872 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 100 flow. Second operand 6 states and 107 transitions. [2024-12-02 12:47:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 218 flow [2024-12-02 12:47:24,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:47:24,873 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 123 flow [2024-12-02 12:47:24,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-12-02 12:47:24,874 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-12-02 12:47:24,875 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 123 flow [2024-12-02 12:47:24,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:24,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:24,875 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:24,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:47:24,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:24,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1469833811, now seen corresponding path program 1 times [2024-12-02 12:47:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401298179] [2024-12-02 12:47:24,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:24,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:47:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401298179] [2024-12-02 12:47:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401298179] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:47:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140942872] [2024-12-02 12:47:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:24,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:47:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:24,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:47:24,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:47:24,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:24,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:24,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:24,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:24,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:25,028 INFO L124 PetriNetUnfolderBase]: 39/142 cut-off events. [2024-12-02 12:47:25,028 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 12:47:25,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 142 events. 39/142 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 532 event pairs, 2 based on Foata normal form. 7/135 useless extension candidates. Maximal degree in co-relation 288. Up to 59 conditions per place. [2024-12-02 12:47:25,029 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 34 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-12-02 12:47:25,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 233 flow [2024-12-02 12:47:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:47:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:47:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-12-02 12:47:25,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-12-02 12:47:25,030 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 123 flow. Second operand 4 states and 76 transitions. [2024-12-02 12:47:25,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 233 flow [2024-12-02 12:47:25,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 222 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-12-02 12:47:25,032 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 118 flow [2024-12-02 12:47:25,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-12-02 12:47:25,033 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-12-02 12:47:25,033 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 118 flow [2024-12-02 12:47:25,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:25,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:25,034 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:25,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:47:25,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:25,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1679792488, now seen corresponding path program 1 times [2024-12-02 12:47:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587248079] [2024-12-02 12:47:25,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 12:47:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:25,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587248079] [2024-12-02 12:47:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587248079] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:47:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697280479] [2024-12-02 12:47:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:25,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:47:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:25,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:47:25,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:47:25,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:25,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:25,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:25,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:25,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:25,167 INFO L124 PetriNetUnfolderBase]: 33/118 cut-off events. [2024-12-02 12:47:25,167 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-12-02 12:47:25,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 118 events. 33/118 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 14 based on Foata normal form. 7/121 useless extension candidates. Maximal degree in co-relation 240. Up to 50 conditions per place. [2024-12-02 12:47:25,168 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-12-02 12:47:25,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 224 flow [2024-12-02 12:47:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:47:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:47:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-12-02 12:47:25,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-12-02 12:47:25,170 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 118 flow. Second operand 4 states and 75 transitions. [2024-12-02 12:47:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 224 flow [2024-12-02 12:47:25,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:47:25,172 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 116 flow [2024-12-02 12:47:25,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-12-02 12:47:25,173 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-12-02 12:47:25,173 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 116 flow [2024-12-02 12:47:25,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:25,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:25,173 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:25,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:47:25,174 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:25,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash 533959951, now seen corresponding path program 1 times [2024-12-02 12:47:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366471199] [2024-12-02 12:47:25,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366471199] [2024-12-02 12:47:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366471199] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892758944] [2024-12-02 12:47:25,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:25,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:25,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:47:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:25,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:47:25,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:25,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:47:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892758944] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:47:25,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:47:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-12-02 12:47:25,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266620340] [2024-12-02 12:47:25,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:47:25,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:47:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:25,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:47:25,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:47:25,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:25,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 116 flow. Second operand has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 18 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:25,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:25,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:25,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:25,718 INFO L124 PetriNetUnfolderBase]: 33/135 cut-off events. [2024-12-02 12:47:25,718 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-12-02 12:47:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 135 events. 33/135 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 397 event pairs, 32 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 245. Up to 82 conditions per place. [2024-12-02 12:47:25,719 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-12-02 12:47:25,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 40 transitions, 228 flow [2024-12-02 12:47:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:47:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 12:47:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2024-12-02 12:47:25,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-12-02 12:47:25,721 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 116 flow. Second operand 15 states and 200 transitions. [2024-12-02 12:47:25,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 40 transitions, 228 flow [2024-12-02 12:47:25,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 40 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:47:25,723 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 207 flow [2024-12-02 12:47:25,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=207, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2024-12-02 12:47:25,724 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-12-02 12:47:25,724 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 207 flow [2024-12-02 12:47:25,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 18 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:25,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:25,725 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:25,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 12:47:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:25,926 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1881374927, now seen corresponding path program 2 times [2024-12-02 12:47:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485187746] [2024-12-02 12:47:25,926 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:47:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:25,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:47:25,974 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:47:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 12:47:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485187746] [2024-12-02 12:47:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485187746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:26,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:26,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:47:26,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824484746] [2024-12-02 12:47:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:26,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:47:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:26,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:47:26,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:47:26,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:26,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:26,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:26,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:26,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:26,638 INFO L124 PetriNetUnfolderBase]: 36/136 cut-off events. [2024-12-02 12:47:26,639 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-12-02 12:47:26,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 136 events. 36/136 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 381 event pairs, 8 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 241. Up to 57 conditions per place. [2024-12-02 12:47:26,640 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-12-02 12:47:26,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 351 flow [2024-12-02 12:47:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:47:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:47:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-12-02 12:47:26,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-12-02 12:47:26,641 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 207 flow. Second operand 6 states and 107 transitions. [2024-12-02 12:47:26,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 351 flow [2024-12-02 12:47:26,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 341 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-12-02 12:47:26,645 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 237 flow [2024-12-02 12:47:26,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2024-12-02 12:47:26,645 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-12-02 12:47:26,646 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 237 flow [2024-12-02 12:47:26,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:26,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:26,646 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:26,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:47:26,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:26,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1692721394, now seen corresponding path program 1 times [2024-12-02 12:47:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738084687] [2024-12-02 12:47:26,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:26,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:26,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738084687] [2024-12-02 12:47:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738084687] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662007015] [2024-12-02 12:47:26,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:26,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:26,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:47:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:27,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:47:27,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:27,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:47:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662007015] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:47:27,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:47:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-12-02 12:47:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383006566] [2024-12-02 12:47:27,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:47:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:47:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:27,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:47:27,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:47:27,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:47:27,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 237 flow. Second operand has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:27,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:27,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:47:27,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:27,528 INFO L124 PetriNetUnfolderBase]: 32/135 cut-off events. [2024-12-02 12:47:27,529 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-12-02 12:47:27,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 135 events. 32/135 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 28 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 370. Up to 81 conditions per place. [2024-12-02 12:47:27,530 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 20 selfloop transitions, 21 changer transitions 0/49 dead transitions. [2024-12-02 12:47:27,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 49 transitions, 373 flow [2024-12-02 12:47:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 12:47:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-12-02 12:47:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-12-02 12:47:27,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2024-12-02 12:47:27,532 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 237 flow. Second operand 21 states and 271 transitions. [2024-12-02 12:47:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 49 transitions, 373 flow [2024-12-02 12:47:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 49 transitions, 365 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 12:47:27,535 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 340 flow [2024-12-02 12:47:27,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=340, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2024-12-02 12:47:27,535 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2024-12-02 12:47:27,536 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 340 flow [2024-12-02 12:47:27,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:27,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:27,536 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:27,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 12:47:27,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:47:27,737 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:27,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2095354355, now seen corresponding path program 2 times [2024-12-02 12:47:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378161482] [2024-12-02 12:47:27,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:47:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:27,808 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:47:27,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:47:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:47:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378161482] [2024-12-02 12:47:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378161482] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:34,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:34,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:47:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480058961] [2024-12-02 12:47:34,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:34,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:47:34,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:34,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:47:34,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:47:34,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:47:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 340 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:47:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:47:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:35,823 INFO L124 PetriNetUnfolderBase]: 70/209 cut-off events. [2024-12-02 12:47:35,824 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-12-02 12:47:35,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 209 events. 70/209 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 670 event pairs, 12 based on Foata normal form. 3/212 useless extension candidates. Maximal degree in co-relation 457. Up to 44 conditions per place. [2024-12-02 12:47:35,825 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 17 changer transitions 3/87 dead transitions. [2024-12-02 12:47:35,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 626 flow [2024-12-02 12:47:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:47:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:47:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-12-02 12:47:35,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-12-02 12:47:35,827 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 340 flow. Second operand 11 states and 144 transitions. [2024-12-02 12:47:35,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 626 flow [2024-12-02 12:47:35,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 583 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-12-02 12:47:35,832 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 410 flow [2024-12-02 12:47:35,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2024-12-02 12:47:35,832 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2024-12-02 12:47:35,832 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 410 flow [2024-12-02 12:47:35,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:47:35,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:35,833 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:35,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:47:35,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:35,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash -63403871, now seen corresponding path program 3 times [2024-12-02 12:47:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:35,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771206728] [2024-12-02 12:47:35,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:47:35,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:35,883 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 12:47:35,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:47:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:47:39,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771206728] [2024-12-02 12:47:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771206728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:39,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:39,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:47:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916986953] [2024-12-02 12:47:39,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:39,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:47:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:39,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:47:39,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:47:39,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:47:39,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:39,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:39,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:47:39,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:40,973 INFO L124 PetriNetUnfolderBase]: 80/247 cut-off events. [2024-12-02 12:47:40,973 INFO L125 PetriNetUnfolderBase]: For 411/413 co-relation queries the response was YES. [2024-12-02 12:47:40,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 247 events. 80/247 cut-off events. For 411/413 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 893 event pairs, 22 based on Foata normal form. 5/252 useless extension candidates. Maximal degree in co-relation 743. Up to 65 conditions per place. [2024-12-02 12:47:40,975 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 27 changer transitions 7/102 dead transitions. [2024-12-02 12:47:40,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 816 flow [2024-12-02 12:47:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:47:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-12-02 12:47:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 190 transitions. [2024-12-02 12:47:40,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3605313092979127 [2024-12-02 12:47:40,977 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 410 flow. Second operand 17 states and 190 transitions. [2024-12-02 12:47:40,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 816 flow [2024-12-02 12:47:40,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 786 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-12-02 12:47:40,982 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 563 flow [2024-12-02 12:47:40,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=563, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2024-12-02 12:47:40,983 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-12-02 12:47:40,983 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 563 flow [2024-12-02 12:47:40,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:40,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:40,983 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:40,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:47:40,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:40,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1802428730, now seen corresponding path program 1 times [2024-12-02 12:47:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:40,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416450801] [2024-12-02 12:47:40,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:47:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416450801] [2024-12-02 12:47:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416450801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:43,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:47:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207620493] [2024-12-02 12:47:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:43,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:47:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:43,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:47:43,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:47:43,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:47:43,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:47:43,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:43,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:47:43,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:44,936 INFO L124 PetriNetUnfolderBase]: 83/261 cut-off events. [2024-12-02 12:47:44,936 INFO L125 PetriNetUnfolderBase]: For 527/531 co-relation queries the response was YES. [2024-12-02 12:47:44,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 261 events. 83/261 cut-off events. For 527/531 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1007 event pairs, 30 based on Foata normal form. 7/268 useless extension candidates. Maximal degree in co-relation 847. Up to 125 conditions per place. [2024-12-02 12:47:44,938 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 32 changer transitions 5/105 dead transitions. [2024-12-02 12:47:44,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 918 flow [2024-12-02 12:47:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:47:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-12-02 12:47:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 184 transitions. [2024-12-02 12:47:44,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-12-02 12:47:44,940 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 563 flow. Second operand 16 states and 184 transitions. [2024-12-02 12:47:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 918 flow [2024-12-02 12:47:44,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 105 transitions, 844 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-12-02 12:47:44,947 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 669 flow [2024-12-02 12:47:44,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=669, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2024-12-02 12:47:44,948 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-12-02 12:47:44,948 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 669 flow [2024-12-02 12:47:44,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:47:44,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:44,948 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:44,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:47:44,948 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:44,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash 195808318, now seen corresponding path program 2 times [2024-12-02 12:47:44,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:44,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441867593] [2024-12-02 12:47:44,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:47:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:44,978 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:47:44,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:47:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:47:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441867593] [2024-12-02 12:47:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441867593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:47:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627564794] [2024-12-02 12:47:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:52,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:47:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:52,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:47:52,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:47:52,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:47:52,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 669 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:52,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:52,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:47:52,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:54,335 INFO L124 PetriNetUnfolderBase]: 87/279 cut-off events. [2024-12-02 12:47:54,335 INFO L125 PetriNetUnfolderBase]: For 612/616 co-relation queries the response was YES. [2024-12-02 12:47:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 279 events. 87/279 cut-off events. For 612/616 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1146 event pairs, 35 based on Foata normal form. 4/283 useless extension candidates. Maximal degree in co-relation 939. Up to 133 conditions per place. [2024-12-02 12:47:54,338 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 66 selfloop transitions, 37 changer transitions 7/112 dead transitions. [2024-12-02 12:47:54,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 112 transitions, 1028 flow [2024-12-02 12:47:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 12:47:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-12-02 12:47:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 203 transitions. [2024-12-02 12:47:54,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34465195246179964 [2024-12-02 12:47:54,340 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 669 flow. Second operand 19 states and 203 transitions. [2024-12-02 12:47:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 112 transitions, 1028 flow [2024-12-02 12:47:54,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 112 transitions, 994 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-12-02 12:47:54,348 INFO L231 Difference]: Finished difference. Result has 135 places, 90 transitions, 794 flow [2024-12-02 12:47:54,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=794, PETRI_PLACES=135, PETRI_TRANSITIONS=90} [2024-12-02 12:47:54,349 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2024-12-02 12:47:54,349 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 90 transitions, 794 flow [2024-12-02 12:47:54,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:54,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:47:54,349 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:54,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:47:54,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:47:54,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 196903858, now seen corresponding path program 3 times [2024-12-02 12:47:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259443791] [2024-12-02 12:47:54,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:47:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:54,379 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 12:47:54,379 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:00,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259443791] [2024-12-02 12:48:00,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259443791] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:00,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:00,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161759205] [2024-12-02 12:48:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:00,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:00,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:00,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:00,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:00,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:48:00,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 90 transitions, 794 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:00,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:00,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:48:00,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:02,308 INFO L124 PetriNetUnfolderBase]: 89/289 cut-off events. [2024-12-02 12:48:02,308 INFO L125 PetriNetUnfolderBase]: For 846/851 co-relation queries the response was YES. [2024-12-02 12:48:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 289 events. 89/289 cut-off events. For 846/851 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1227 event pairs, 30 based on Foata normal form. 5/294 useless extension candidates. Maximal degree in co-relation 1069. Up to 129 conditions per place. [2024-12-02 12:48:02,310 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 71 selfloop transitions, 44 changer transitions 0/117 dead transitions. [2024-12-02 12:48:02,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 117 transitions, 1148 flow [2024-12-02 12:48:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:48:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-12-02 12:48:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2024-12-02 12:48:02,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3586337760910816 [2024-12-02 12:48:02,312 INFO L175 Difference]: Start difference. First operand has 135 places, 90 transitions, 794 flow. Second operand 17 states and 189 transitions. [2024-12-02 12:48:02,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 117 transitions, 1148 flow [2024-12-02 12:48:02,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 117 transitions, 1104 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-12-02 12:48:02,318 INFO L231 Difference]: Finished difference. Result has 145 places, 98 transitions, 925 flow [2024-12-02 12:48:02,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=925, PETRI_PLACES=145, PETRI_TRANSITIONS=98} [2024-12-02 12:48:02,319 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 112 predicate places. [2024-12-02 12:48:02,319 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 98 transitions, 925 flow [2024-12-02 12:48:02,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:02,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:02,319 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:02,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:48:02,319 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:02,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash -365176940, now seen corresponding path program 4 times [2024-12-02 12:48:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212998208] [2024-12-02 12:48:02,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:48:02,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:02,379 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:48:02,380 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212998208] [2024-12-02 12:48:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212998208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:07,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:07,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:07,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516172917] [2024-12-02 12:48:07,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:07,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:07,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:07,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:07,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:07,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:48:07,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 98 transitions, 925 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:48:07,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:07,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:48:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:09,354 INFO L124 PetriNetUnfolderBase]: 90/299 cut-off events. [2024-12-02 12:48:09,355 INFO L125 PetriNetUnfolderBase]: For 1029/1033 co-relation queries the response was YES. [2024-12-02 12:48:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 299 events. 90/299 cut-off events. For 1029/1033 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1322 event pairs, 40 based on Foata normal form. 7/306 useless extension candidates. Maximal degree in co-relation 1153. Up to 142 conditions per place. [2024-12-02 12:48:09,356 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 39 changer transitions 0/120 dead transitions. [2024-12-02 12:48:09,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 120 transitions, 1281 flow [2024-12-02 12:48:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:48:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 12:48:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-12-02 12:48:09,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37557603686635943 [2024-12-02 12:48:09,358 INFO L175 Difference]: Start difference. First operand has 145 places, 98 transitions, 925 flow. Second operand 14 states and 163 transitions. [2024-12-02 12:48:09,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 120 transitions, 1281 flow [2024-12-02 12:48:09,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 120 transitions, 1203 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-12-02 12:48:09,369 INFO L231 Difference]: Finished difference. Result has 153 places, 104 transitions, 1028 flow [2024-12-02 12:48:09,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1028, PETRI_PLACES=153, PETRI_TRANSITIONS=104} [2024-12-02 12:48:09,370 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2024-12-02 12:48:09,370 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 104 transitions, 1028 flow [2024-12-02 12:48:09,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:48:09,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:09,370 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:09,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:48:09,370 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:09,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 509772621, now seen corresponding path program 4 times [2024-12-02 12:48:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892812380] [2024-12-02 12:48:09,371 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:48:09,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:09,440 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:48:09,440 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892812380] [2024-12-02 12:48:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892812380] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:10,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378694624] [2024-12-02 12:48:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:10,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:10,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:10,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:10,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:48:10,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 104 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:48:10,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:10,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:48:10,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:11,511 INFO L124 PetriNetUnfolderBase]: 92/309 cut-off events. [2024-12-02 12:48:11,512 INFO L125 PetriNetUnfolderBase]: For 1172/1176 co-relation queries the response was YES. [2024-12-02 12:48:11,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 309 events. 92/309 cut-off events. For 1172/1176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1403 event pairs, 28 based on Foata normal form. 7/316 useless extension candidates. Maximal degree in co-relation 1216. Up to 119 conditions per place. [2024-12-02 12:48:11,514 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 42 changer transitions 1/135 dead transitions. [2024-12-02 12:48:11,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 135 transitions, 1436 flow [2024-12-02 12:48:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:48:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-12-02 12:48:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2024-12-02 12:48:11,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3586337760910816 [2024-12-02 12:48:11,515 INFO L175 Difference]: Start difference. First operand has 153 places, 104 transitions, 1028 flow. Second operand 17 states and 189 transitions. [2024-12-02 12:48:11,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 135 transitions, 1436 flow [2024-12-02 12:48:11,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 135 transitions, 1408 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-12-02 12:48:11,523 INFO L231 Difference]: Finished difference. Result has 171 places, 114 transitions, 1166 flow [2024-12-02 12:48:11,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1166, PETRI_PLACES=171, PETRI_TRANSITIONS=114} [2024-12-02 12:48:11,523 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-12-02 12:48:11,523 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 114 transitions, 1166 flow [2024-12-02 12:48:11,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-12-02 12:48:11,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:11,524 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:11,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:48:11,524 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:11,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:11,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1489507340, now seen corresponding path program 1 times [2024-12-02 12:48:11,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:11,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891082471] [2024-12-02 12:48:11,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:11,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891082471] [2024-12-02 12:48:14,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891082471] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:14,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813037541] [2024-12-02 12:48:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:14,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:48:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:14,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:48:14,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:48:14,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:14,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 114 transitions, 1166 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:14,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:14,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:17,010 INFO L124 PetriNetUnfolderBase]: 80/312 cut-off events. [2024-12-02 12:48:17,010 INFO L125 PetriNetUnfolderBase]: For 1574/1578 co-relation queries the response was YES. [2024-12-02 12:48:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 312 events. 80/312 cut-off events. For 1574/1578 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1565 event pairs, 31 based on Foata normal form. 7/318 useless extension candidates. Maximal degree in co-relation 1322. Up to 144 conditions per place. [2024-12-02 12:48:17,018 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 69 selfloop transitions, 19 changer transitions 25/132 dead transitions. [2024-12-02 12:48:17,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 132 transitions, 1503 flow [2024-12-02 12:48:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:48:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:48:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-12-02 12:48:17,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-12-02 12:48:17,019 INFO L175 Difference]: Start difference. First operand has 171 places, 114 transitions, 1166 flow. Second operand 10 states and 138 transitions. [2024-12-02 12:48:17,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 132 transitions, 1503 flow [2024-12-02 12:48:17,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 132 transitions, 1413 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-12-02 12:48:17,033 INFO L231 Difference]: Finished difference. Result has 172 places, 102 transitions, 984 flow [2024-12-02 12:48:17,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=984, PETRI_PLACES=172, PETRI_TRANSITIONS=102} [2024-12-02 12:48:17,034 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 139 predicate places. [2024-12-02 12:48:17,034 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 102 transitions, 984 flow [2024-12-02 12:48:17,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:17,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:17,034 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:17,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:48:17,034 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:17,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 40716140, now seen corresponding path program 1 times [2024-12-02 12:48:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236946488] [2024-12-02 12:48:17,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236946488] [2024-12-02 12:48:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236946488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228216002] [2024-12-02 12:48:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:20,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:20,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:20,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 102 transitions, 984 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:20,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:20,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:22,099 INFO L124 PetriNetUnfolderBase]: 62/264 cut-off events. [2024-12-02 12:48:22,099 INFO L125 PetriNetUnfolderBase]: For 1222/1226 co-relation queries the response was YES. [2024-12-02 12:48:22,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 264 events. 62/264 cut-off events. For 1222/1226 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1245 event pairs, 32 based on Foata normal form. 7/270 useless extension candidates. Maximal degree in co-relation 1122. Up to 146 conditions per place. [2024-12-02 12:48:22,101 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 22 changer transitions 13/114 dead transitions. [2024-12-02 12:48:22,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 114 transitions, 1211 flow [2024-12-02 12:48:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:48:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 12:48:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-12-02 12:48:22,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4119106699751861 [2024-12-02 12:48:22,102 INFO L175 Difference]: Start difference. First operand has 172 places, 102 transitions, 984 flow. Second operand 13 states and 166 transitions. [2024-12-02 12:48:22,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 114 transitions, 1211 flow [2024-12-02 12:48:22,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 114 transitions, 1142 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-12-02 12:48:22,109 INFO L231 Difference]: Finished difference. Result has 168 places, 96 transitions, 901 flow [2024-12-02 12:48:22,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=901, PETRI_PLACES=168, PETRI_TRANSITIONS=96} [2024-12-02 12:48:22,110 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2024-12-02 12:48:22,110 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 96 transitions, 901 flow [2024-12-02 12:48:22,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:22,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:22,110 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:22,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:48:22,110 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:22,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1810207800, now seen corresponding path program 1 times [2024-12-02 12:48:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119186466] [2024-12-02 12:48:22,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:25,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119186466] [2024-12-02 12:48:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119186466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:25,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068134547] [2024-12-02 12:48:25,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:25,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:25,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:25,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:25,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:48:25,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 96 transitions, 901 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:25,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:25,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:48:25,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:25,913 INFO L124 PetriNetUnfolderBase]: 70/256 cut-off events. [2024-12-02 12:48:25,913 INFO L125 PetriNetUnfolderBase]: For 826/826 co-relation queries the response was YES. [2024-12-02 12:48:25,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 256 events. 70/256 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1099 event pairs, 4 based on Foata normal form. 2/258 useless extension candidates. Maximal degree in co-relation 1095. Up to 69 conditions per place. [2024-12-02 12:48:25,915 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 25 changer transitions 0/114 dead transitions. [2024-12-02 12:48:25,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 114 transitions, 1211 flow [2024-12-02 12:48:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:48:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:48:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-12-02 12:48:25,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-12-02 12:48:25,916 INFO L175 Difference]: Start difference. First operand has 168 places, 96 transitions, 901 flow. Second operand 11 states and 128 transitions. [2024-12-02 12:48:25,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 114 transitions, 1211 flow [2024-12-02 12:48:25,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 114 transitions, 1145 flow, removed 3 selfloop flow, removed 18 redundant places. [2024-12-02 12:48:25,921 INFO L231 Difference]: Finished difference. Result has 155 places, 95 transitions, 873 flow [2024-12-02 12:48:25,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=873, PETRI_PLACES=155, PETRI_TRANSITIONS=95} [2024-12-02 12:48:25,921 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 122 predicate places. [2024-12-02 12:48:25,921 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 95 transitions, 873 flow [2024-12-02 12:48:25,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:25,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:25,922 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:25,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:48:25,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:25,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1809052660, now seen corresponding path program 2 times [2024-12-02 12:48:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618775828] [2024-12-02 12:48:25,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:48:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:25,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:48:25,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618775828] [2024-12-02 12:48:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618775828] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:30,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:30,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901067243] [2024-12-02 12:48:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:30,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:30,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:30,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:30,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:30,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:30,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 95 transitions, 873 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:30,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:30,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:31,634 INFO L124 PetriNetUnfolderBase]: 54/233 cut-off events. [2024-12-02 12:48:31,634 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2024-12-02 12:48:31,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 233 events. 54/233 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1027 event pairs, 17 based on Foata normal form. 3/233 useless extension candidates. Maximal degree in co-relation 987. Up to 118 conditions per place. [2024-12-02 12:48:31,636 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 26 changer transitions 7/109 dead transitions. [2024-12-02 12:48:31,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 109 transitions, 1104 flow [2024-12-02 12:48:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:48:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 12:48:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-12-02 12:48:31,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-12-02 12:48:31,637 INFO L175 Difference]: Start difference. First operand has 155 places, 95 transitions, 873 flow. Second operand 14 states and 174 transitions. [2024-12-02 12:48:31,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 109 transitions, 1104 flow [2024-12-02 12:48:31,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 109 transitions, 1060 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-12-02 12:48:31,641 INFO L231 Difference]: Finished difference. Result has 160 places, 91 transitions, 851 flow [2024-12-02 12:48:31,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=851, PETRI_PLACES=160, PETRI_TRANSITIONS=91} [2024-12-02 12:48:31,642 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 127 predicate places. [2024-12-02 12:48:31,642 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 91 transitions, 851 flow [2024-12-02 12:48:31,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:31,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:31,642 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:31,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:48:31,642 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:31,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1775090920, now seen corresponding path program 3 times [2024-12-02 12:48:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596245809] [2024-12-02 12:48:31,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:48:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:31,658 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 12:48:31,658 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:36,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596245809] [2024-12-02 12:48:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596245809] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007912098] [2024-12-02 12:48:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:36,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:36,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:36,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:36,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:36,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 91 transitions, 851 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:36,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:36,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:36,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:37,730 INFO L124 PetriNetUnfolderBase]: 48/215 cut-off events. [2024-12-02 12:48:37,730 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-12-02 12:48:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 215 events. 48/215 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 868 event pairs, 17 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 930. Up to 102 conditions per place. [2024-12-02 12:48:37,732 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 20 changer transitions 16/102 dead transitions. [2024-12-02 12:48:37,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 1058 flow [2024-12-02 12:48:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:48:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 12:48:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-12-02 12:48:37,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39950372208436724 [2024-12-02 12:48:37,733 INFO L175 Difference]: Start difference. First operand has 160 places, 91 transitions, 851 flow. Second operand 13 states and 161 transitions. [2024-12-02 12:48:37,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 1058 flow [2024-12-02 12:48:37,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 102 transitions, 978 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-12-02 12:48:37,738 INFO L231 Difference]: Finished difference. Result has 154 places, 80 transitions, 697 flow [2024-12-02 12:48:37,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=697, PETRI_PLACES=154, PETRI_TRANSITIONS=80} [2024-12-02 12:48:37,738 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2024-12-02 12:48:37,738 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 80 transitions, 697 flow [2024-12-02 12:48:37,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:37,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:37,738 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:37,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:48:37,738 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:37,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1564417106, now seen corresponding path program 4 times [2024-12-02 12:48:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711093118] [2024-12-02 12:48:37,739 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:48:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:37,768 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:48:37,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711093118] [2024-12-02 12:48:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711093118] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49152722] [2024-12-02 12:48:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:41,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:41,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:41,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:41,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:48:41,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 80 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:41,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:48:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:42,259 INFO L124 PetriNetUnfolderBase]: 34/177 cut-off events. [2024-12-02 12:48:42,259 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2024-12-02 12:48:42,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 177 events. 34/177 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 636 event pairs, 14 based on Foata normal form. 3/180 useless extension candidates. Maximal degree in co-relation 716. Up to 72 conditions per place. [2024-12-02 12:48:42,260 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 14 changer transitions 14/88 dead transitions. [2024-12-02 12:48:42,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 88 transitions, 865 flow [2024-12-02 12:48:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:48:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 12:48:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-12-02 12:48:42,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-12-02 12:48:42,261 INFO L175 Difference]: Start difference. First operand has 154 places, 80 transitions, 697 flow. Second operand 12 states and 174 transitions. [2024-12-02 12:48:42,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 88 transitions, 865 flow [2024-12-02 12:48:42,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 88 transitions, 771 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-12-02 12:48:42,265 INFO L231 Difference]: Finished difference. Result has 139 places, 71 transitions, 561 flow [2024-12-02 12:48:42,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=139, PETRI_TRANSITIONS=71} [2024-12-02 12:48:42,266 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 106 predicate places. [2024-12-02 12:48:42,266 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 71 transitions, 561 flow [2024-12-02 12:48:42,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:42,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:42,266 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:42,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:48:42,266 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:42,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1131597754, now seen corresponding path program 2 times [2024-12-02 12:48:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:42,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171935689] [2024-12-02 12:48:42,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:48:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:42,287 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:48:42,287 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:46,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171935689] [2024-12-02 12:48:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171935689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:46,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:46,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889558248] [2024-12-02 12:48:46,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:46,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:46,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:46,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:46,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:46,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 71 transitions, 561 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:46,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:46,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:46,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:47,866 INFO L124 PetriNetUnfolderBase]: 40/183 cut-off events. [2024-12-02 12:48:47,866 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-12-02 12:48:47,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 183 events. 40/183 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 648 event pairs, 17 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 666. Up to 81 conditions per place. [2024-12-02 12:48:47,867 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 12 changer transitions 12/84 dead transitions. [2024-12-02 12:48:47,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 84 transitions, 755 flow [2024-12-02 12:48:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:48:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 12:48:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-12-02 12:48:47,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-12-02 12:48:47,868 INFO L175 Difference]: Start difference. First operand has 139 places, 71 transitions, 561 flow. Second operand 12 states and 151 transitions. [2024-12-02 12:48:47,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 84 transitions, 755 flow [2024-12-02 12:48:47,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 84 transitions, 699 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-12-02 12:48:47,871 INFO L231 Difference]: Finished difference. Result has 127 places, 67 transitions, 502 flow [2024-12-02 12:48:47,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=502, PETRI_PLACES=127, PETRI_TRANSITIONS=67} [2024-12-02 12:48:47,871 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-12-02 12:48:47,872 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 67 transitions, 502 flow [2024-12-02 12:48:47,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:47,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:47,872 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:47,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:48:47,872 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:47,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1229460806, now seen corresponding path program 3 times [2024-12-02 12:48:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847924423] [2024-12-02 12:48:47,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:48:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:47,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 12:48:47,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847924423] [2024-12-02 12:48:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847924423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:49,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100462128] [2024-12-02 12:48:49,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:49,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:49,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:49,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:50,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:50,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 67 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:50,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:50,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:50,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:50,842 INFO L124 PetriNetUnfolderBase]: 33/166 cut-off events. [2024-12-02 12:48:50,842 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-12-02 12:48:50,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 166 events. 33/166 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 554 event pairs, 17 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 584. Up to 71 conditions per place. [2024-12-02 12:48:50,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 13 changer transitions 8/80 dead transitions. [2024-12-02 12:48:50,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 80 transitions, 688 flow [2024-12-02 12:48:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:48:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 12:48:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-12-02 12:48:50,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-12-02 12:48:50,844 INFO L175 Difference]: Start difference. First operand has 127 places, 67 transitions, 502 flow. Second operand 12 states and 150 transitions. [2024-12-02 12:48:50,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 80 transitions, 688 flow [2024-12-02 12:48:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 80 transitions, 651 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-12-02 12:48:50,847 INFO L231 Difference]: Finished difference. Result has 125 places, 67 transitions, 498 flow [2024-12-02 12:48:50,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=125, PETRI_TRANSITIONS=67} [2024-12-02 12:48:50,848 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 92 predicate places. [2024-12-02 12:48:50,848 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 67 transitions, 498 flow [2024-12-02 12:48:50,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:50,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:50,848 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:50,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:48:50,848 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:50,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1376917556, now seen corresponding path program 4 times [2024-12-02 12:48:50,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:50,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211507477] [2024-12-02 12:48:50,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:48:50,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:50,883 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:48:50,883 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:52,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211507477] [2024-12-02 12:48:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211507477] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:52,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:52,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481379199] [2024-12-02 12:48:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:52,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:52,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:52,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:52,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-12-02 12:48:52,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 67 transitions, 498 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:52,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:52,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-12-02 12:48:52,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:53,100 INFO L124 PetriNetUnfolderBase]: 26/140 cut-off events. [2024-12-02 12:48:53,100 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-12-02 12:48:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 140 events. 26/140 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 388 event pairs, 11 based on Foata normal form. 3/143 useless extension candidates. Maximal degree in co-relation 512. Up to 51 conditions per place. [2024-12-02 12:48:53,101 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 15 changer transitions 10/75 dead transitions. [2024-12-02 12:48:53,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 75 transitions, 644 flow [2024-12-02 12:48:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:48:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 12:48:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 198 transitions. [2024-12-02 12:48:53,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2024-12-02 12:48:53,103 INFO L175 Difference]: Start difference. First operand has 125 places, 67 transitions, 498 flow. Second operand 14 states and 198 transitions. [2024-12-02 12:48:53,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 75 transitions, 644 flow [2024-12-02 12:48:53,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 75 transitions, 614 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-12-02 12:48:53,107 INFO L231 Difference]: Finished difference. Result has 128 places, 61 transitions, 464 flow [2024-12-02 12:48:53,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=464, PETRI_PLACES=128, PETRI_TRANSITIONS=61} [2024-12-02 12:48:53,107 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 95 predicate places. [2024-12-02 12:48:53,107 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 61 transitions, 464 flow [2024-12-02 12:48:53,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:53,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:53,107 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:53,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:48:53,107 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:53,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1635565004, now seen corresponding path program 1 times [2024-12-02 12:48:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707264293] [2024-12-02 12:48:53,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:54,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707264293] [2024-12-02 12:48:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707264293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:54,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145609420] [2024-12-02 12:48:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:54,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:54,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:54,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:54,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-12-02 12:48:54,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 61 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:54,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:54,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-12-02 12:48:54,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:55,843 INFO L124 PetriNetUnfolderBase]: 22/127 cut-off events. [2024-12-02 12:48:55,843 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2024-12-02 12:48:55,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 127 events. 22/127 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 308 event pairs, 4 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 480. Up to 31 conditions per place. [2024-12-02 12:48:55,844 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-12-02 12:48:55,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 77 transitions, 678 flow [2024-12-02 12:48:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:48:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 12:48:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-12-02 12:48:55,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37965260545905705 [2024-12-02 12:48:55,845 INFO L175 Difference]: Start difference. First operand has 128 places, 61 transitions, 464 flow. Second operand 13 states and 153 transitions. [2024-12-02 12:48:55,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 77 transitions, 678 flow [2024-12-02 12:48:55,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 77 transitions, 613 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-12-02 12:48:55,848 INFO L231 Difference]: Finished difference. Result has 121 places, 68 transitions, 502 flow [2024-12-02 12:48:55,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=502, PETRI_PLACES=121, PETRI_TRANSITIONS=68} [2024-12-02 12:48:55,848 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 88 predicate places. [2024-12-02 12:48:55,848 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 68 transitions, 502 flow [2024-12-02 12:48:55,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:55,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:55,848 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:55,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:48:55,848 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:55,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash 281867310, now seen corresponding path program 1 times [2024-12-02 12:48:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444639729] [2024-12-02 12:48:55,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:48:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444639729] [2024-12-02 12:48:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444639729] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:58,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:48:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196513492] [2024-12-02 12:48:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:58,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:58,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:58,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:58,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:48:58,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 68 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:58,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:48:58,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:48:58,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:48:59,076 INFO L124 PetriNetUnfolderBase]: 20/125 cut-off events. [2024-12-02 12:48:59,077 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-12-02 12:48:59,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 125 events. 20/125 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 304 event pairs, 5 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 477. Up to 42 conditions per place. [2024-12-02 12:48:59,077 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 8 changer transitions 15/72 dead transitions. [2024-12-02 12:48:59,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 72 transitions, 636 flow [2024-12-02 12:48:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:48:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:48:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-12-02 12:48:59,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-12-02 12:48:59,078 INFO L175 Difference]: Start difference. First operand has 121 places, 68 transitions, 502 flow. Second operand 10 states and 123 transitions. [2024-12-02 12:48:59,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 72 transitions, 636 flow [2024-12-02 12:48:59,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 72 transitions, 605 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-12-02 12:48:59,081 INFO L231 Difference]: Finished difference. Result has 122 places, 57 transitions, 430 flow [2024-12-02 12:48:59,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=430, PETRI_PLACES=122, PETRI_TRANSITIONS=57} [2024-12-02 12:48:59,082 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2024-12-02 12:48:59,082 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 57 transitions, 430 flow [2024-12-02 12:48:59,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:59,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:48:59,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:59,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:48:59,082 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:48:59,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1050519305, now seen corresponding path program 1 times [2024-12-02 12:48:59,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:59,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605228510] [2024-12-02 12:48:59,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:59,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:49:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:07,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605228510] [2024-12-02 12:49:07,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605228510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:49:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:49:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014052807] [2024-12-02 12:49:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:07,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:49:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:07,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:49:07,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:49:07,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-12-02 12:49:07,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 57 transitions, 430 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:07,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:49:07,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-12-02 12:49:07,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:49:08,077 INFO L124 PetriNetUnfolderBase]: 10/88 cut-off events. [2024-12-02 12:49:08,077 INFO L125 PetriNetUnfolderBase]: For 256/258 co-relation queries the response was YES. [2024-12-02 12:49:08,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 88 events. 10/88 cut-off events. For 256/258 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 2 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 352. Up to 26 conditions per place. [2024-12-02 12:49:08,077 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 4 changer transitions 15/63 dead transitions. [2024-12-02 12:49:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 63 transitions, 574 flow [2024-12-02 12:49:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:49:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:49:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-12-02 12:49:08,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-12-02 12:49:08,078 INFO L175 Difference]: Start difference. First operand has 122 places, 57 transitions, 430 flow. Second operand 9 states and 110 transitions. [2024-12-02 12:49:08,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 63 transitions, 574 flow [2024-12-02 12:49:08,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 63 transitions, 536 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-12-02 12:49:08,081 INFO L231 Difference]: Finished difference. Result has 103 places, 48 transitions, 351 flow [2024-12-02 12:49:08,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=103, PETRI_TRANSITIONS=48} [2024-12-02 12:49:08,082 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-12-02 12:49:08,082 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 48 transitions, 351 flow [2024-12-02 12:49:08,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:08,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:49:08,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:08,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:49:08,082 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:49:08,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1710393131, now seen corresponding path program 2 times [2024-12-02 12:49:08,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:08,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800509272] [2024-12-02 12:49:08,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:49:08,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:08,117 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:49:08,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:49:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:49:09,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800509272] [2024-12-02 12:49:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800509272] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584489252] [2024-12-02 12:49:09,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:49:09,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:09,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:09,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:09,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:49:09,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:49:09,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:49:09,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-02 12:49:09,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:11,491 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2024-12-02 12:49:11,491 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 [2024-12-02 12:49:14,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:49:14,649 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 [2024-12-02 12:49:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:49:18,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:49:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:49:30,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584489252] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:49:30,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:49:30,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 25, 6] total 35 [2024-12-02 12:49:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032688057] [2024-12-02 12:49:30,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:49:30,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 12:49:30,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:30,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 12:49:30,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1090, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 12:49:30,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-12-02 12:49:30,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 48 transitions, 351 flow. Second operand has 37 states, 37 states have (on average 8.513513513513514) internal successors, (315), 37 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:30,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:49:30,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-12-02 12:49:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:49:34,508 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2024-12-02 12:49:34,508 INFO L125 PetriNetUnfolderBase]: For 186/188 co-relation queries the response was YES. [2024-12-02 12:49:34,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 64 events. 5/64 cut-off events. For 186/188 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 258. Up to 11 conditions per place. [2024-12-02 12:49:34,508 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 10 selfloop transitions, 25 changer transitions 10/48 dead transitions. [2024-12-02 12:49:34,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 48 transitions, 438 flow [2024-12-02 12:49:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 12:49:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-12-02 12:49:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 246 transitions. [2024-12-02 12:49:34,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27363737486095663 [2024-12-02 12:49:34,510 INFO L175 Difference]: Start difference. First operand has 103 places, 48 transitions, 351 flow. Second operand 29 states and 246 transitions. [2024-12-02 12:49:34,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 48 transitions, 438 flow [2024-12-02 12:49:34,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 48 transitions, 397 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-12-02 12:49:34,512 INFO L231 Difference]: Finished difference. Result has 106 places, 38 transitions, 309 flow [2024-12-02 12:49:34,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=309, PETRI_PLACES=106, PETRI_TRANSITIONS=38} [2024-12-02 12:49:34,513 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2024-12-02 12:49:34,513 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 38 transitions, 309 flow [2024-12-02 12:49:34,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.513513513513514) internal successors, (315), 37 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:34,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:49:34,513 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:34,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 12:49:34,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:34,713 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 12:49:34,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash -995054799, now seen corresponding path program 1 times [2024-12-02 12:49:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504454863] [2024-12-02 12:49:34,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 12:49:36,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504454863] [2024-12-02 12:49:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504454863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:49:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200088927] [2024-12-02 12:49:36,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:36,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:49:36,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:49:36,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:49:36,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:49:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:36,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 12:49:36,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:49:38,842 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2024-12-02 12:49:38,842 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 10 case distinctions, treesize of input 90 treesize of output 141 [2024-12-02 12:49:43,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:49:43,221 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 505 treesize of output 323 [2024-12-02 12:49:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 146 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:49:49,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:49:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 146 trivial. 0 not checked. [2024-12-02 12:49:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200088927] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:49:53,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:49:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 23, 4] total 32 [2024-12-02 12:49:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325180167] [2024-12-02 12:49:53,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:49:53,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 12:49:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:53,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 12:49:53,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=924, Unknown=1, NotChecked=0, Total=1122 [2024-12-02 12:49:54,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-12-02 12:49:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 38 transitions, 309 flow. Second operand has 34 states, 34 states have (on average 6.264705882352941) internal successors, (213), 34 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:49:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-12-02 12:49:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:49:57,106 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-12-02 12:49:57,106 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-12-02 12:49:57,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 46 events. 1/46 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 204. Up to 11 conditions per place. [2024-12-02 12:49:57,106 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-12-02 12:49:57,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 46 transitions, 407 flow [2024-12-02 12:49:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 12:49:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-12-02 12:49:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 149 transitions. [2024-12-02 12:49:57,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.184863523573201 [2024-12-02 12:49:57,107 INFO L175 Difference]: Start difference. First operand has 106 places, 38 transitions, 309 flow. Second operand 26 states and 149 transitions. [2024-12-02 12:49:57,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 46 transitions, 407 flow [2024-12-02 12:49:57,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 46 transitions, 318 flow, removed 10 selfloop flow, removed 36 redundant places. [2024-12-02 12:49:57,109 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-12-02 12:49:57,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-12-02 12:49:57,110 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2024-12-02 12:49:57,110 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-12-02 12:49:57,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.264705882352941) internal successors, (213), 34 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:49:57,112 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-12-02 12:49:57,112 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-02 12:49:57,112 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-02 12:49:57,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-02 12:49:57,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:49:57,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 12:49:57,314 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:57,317 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 12:49:57,317 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:49:57,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:49:57 BasicIcfg [2024-12-02 12:49:57,322 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:49:57,322 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:49:57,322 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:49:57,323 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:49:57,323 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:47:21" (3/4) ... [2024-12-02 12:49:57,324 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:49:57,326 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-12-02 12:49:57,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2024-12-02 12:49:57,331 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-02 12:49:57,331 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 12:49:57,393 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:49:57,394 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:49:57,394 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:49:57,395 INFO L158 Benchmark]: Toolchain (without parser) took 157383.00ms. Allocated memory was 142.6MB in the beginning and 645.9MB in the end (delta: 503.3MB). Free memory was 115.7MB in the beginning and 394.0MB in the end (delta: -278.4MB). Peak memory consumption was 221.7MB. Max. memory is 16.1GB. [2024-12-02 12:49:57,395 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:49:57,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.48ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 86.1MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 12:49:57,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.21ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 83.6MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:49:57,395 INFO L158 Benchmark]: Boogie Preprocessor took 51.47ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:49:57,396 INFO L158 Benchmark]: RCFGBuilder took 795.37ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 112.7MB in the end (delta: -31.4MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2024-12-02 12:49:57,396 INFO L158 Benchmark]: TraceAbstraction took 155870.12ms. Allocated memory was 142.6MB in the beginning and 645.9MB in the end (delta: 503.3MB). Free memory was 111.9MB in the beginning and 396.6MB in the end (delta: -284.7MB). Peak memory consumption was 214.4MB. Max. memory is 16.1GB. [2024-12-02 12:49:57,397 INFO L158 Benchmark]: Witness Printer took 71.48ms. Allocated memory is still 645.9MB. Free memory was 396.6MB in the beginning and 394.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:49:57,398 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.48ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 86.1MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.21ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 83.6MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.47ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 795.37ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 112.7MB in the end (delta: -31.4MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. * TraceAbstraction took 155870.12ms. Allocated memory was 142.6MB in the beginning and 645.9MB in the end (delta: 503.3MB). Free memory was 111.9MB in the beginning and 396.6MB in the end (delta: -284.7MB). Peak memory consumption was 214.4MB. Max. memory is 16.1GB. * Witness Printer took 71.48ms. Allocated memory is still 645.9MB. Free memory was 396.6MB in the beginning and 394.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: 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 - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: 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, 46 locations, 13 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: 155.8s, OverallIterations: 31, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1685 SdHoareTripleChecker+Valid, 9.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1549 mSDsluCounter, 3199 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3098 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7233 IncrementalHoareTripleChecker+Invalid, 7389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 101 mSDtfsCounter, 7233 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 739 GetRequests, 215 SyntacticMatches, 32 SemanticMatches, 492 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 53.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1166occurred in iteration=17, InterpolantAutomatonStates: 385, 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: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 118.7s InterpolantComputationTime, 1261 NumberOfCodeBlocks, 991 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1374 ConstructedInterpolants, 79 QuantifiedInterpolants, 108613 SizeOfPredicates, 53 NumberOfNonLiveVariables, 1468 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 42 InterpolantComputations, 26 PerfectInterpolantSequences, 3451/3999 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:49:57,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645290c3-e502-49c8-8f42-2b85d621816b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE