./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/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_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/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_ef16e50e-37b9-4be0-9bef-9547535b5616/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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:04:07,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:04:07,623 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 11:04:07,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:04:07,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:04:07,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:04:07,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:04:07,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:04:07,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:04:07,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:04:07,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:04:07,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:04:07,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:04:07,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:04:07,652 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:04:07,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:04:07,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:04:07,654 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:04:07,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:04:07,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:04:07,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:04:07,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:04:07,655 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_ef16e50e-37b9-4be0-9bef-9547535b5616/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 -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-12-02 11:04:07,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:04:07,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:04:07,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:04:07,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:04:07,930 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:04:07,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-12-02 11:04:10,734 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/data/b577f13d8/2dff67704df44463b49201dd68ad5d54/FLAG09844c8dc [2024-12-02 11:04:10,963 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:04:10,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-12-02 11:04:10,977 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/data/b577f13d8/2dff67704df44463b49201dd68ad5d54/FLAG09844c8dc [2024-12-02 11:04:10,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/data/b577f13d8/2dff67704df44463b49201dd68ad5d54 [2024-12-02 11:04:10,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:04:10,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:04:10,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:04:10,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:04:11,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:04:11,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:04:10" (1/1) ... [2024-12-02 11:04:11,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2b51f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11, skipping insertion in model container [2024-12-02 11:04:11,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:04:10" (1/1) ... [2024-12-02 11:04:11,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:04:11,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:04:11,326 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:04:11,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:04:11,407 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:04:11,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11 WrapperNode [2024-12-02 11:04:11,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:04:11,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:04:11,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:04:11,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:04:11,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,442 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 106 [2024-12-02 11:04:11,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:04:11,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:04:11,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:04:11,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:04:11,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,470 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-12-02 11:04:11,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,476 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:04:11,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:04:11,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:04:11,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:04:11,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (1/1) ... [2024-12-02 11:04:11,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:04:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:11,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:04:11,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-12-02 11:04:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 11:04:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:04:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:04:11,537 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 11:04:11,636 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:04:11,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:04:11,830 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:04:11,830 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:04:11,960 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:04:11,960 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 11:04:11,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:04:11 BoogieIcfgContainer [2024-12-02 11:04:11,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:04:11,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:04:11,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:04:11,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:04:11,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:04:10" (1/3) ... [2024-12-02 11:04:11,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da3b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:04:11, skipping insertion in model container [2024-12-02 11:04:11,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:11" (2/3) ... [2024-12-02 11:04:11,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da3b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:04:11, skipping insertion in model container [2024-12-02 11:04:11,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:04:11" (3/3) ... [2024-12-02 11:04:11,972 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-12-02 11:04:11,989 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:04:11,990 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_69-refine-protected-loop-interval_true.i that has 2 procedures, 34 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2024-12-02 11:04:11,990 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:04:12,033 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 11:04:12,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 38 transitions, 80 flow [2024-12-02 11:04:12,098 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-12-02 11:04:12,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:04:12,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-12-02 11:04:12,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 38 transitions, 80 flow [2024-12-02 11:04:12,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 37 transitions, 77 flow [2024-12-02 11:04:12,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:04:12,123 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;@5f8ec91e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:04:12,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-12-02 11:04:12,132 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:04:12,132 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-12-02 11:04:12,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:04:12,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:12,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:12,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:12,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1304883500, now seen corresponding path program 1 times [2024-12-02 11:04:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:12,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097813685] [2024-12-02 11:04:12,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:12,404 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 11:04:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097813685] [2024-12-02 11:04:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097813685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:04:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98462965] [2024-12-02 11:04:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:12,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:04:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:12,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:04:12,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:04:12,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-12-02 11:04:12,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:12,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:12,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-12-02 11:04:12,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:12,641 INFO L124 PetriNetUnfolderBase]: 185/406 cut-off events. [2024-12-02 11:04:12,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:04:12,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 406 events. 185/406 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1770 event pairs, 14 based on Foata normal form. 4/339 useless extension candidates. Maximal degree in co-relation 734. Up to 222 conditions per place. [2024-12-02 11:04:12,646 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2024-12-02 11:04:12,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 241 flow [2024-12-02 11:04:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:04:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 11:04:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-12-02 11:04:12,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-12-02 11:04:12,661 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 77 flow. Second operand 5 states and 132 transitions. [2024-12-02 11:04:12,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 241 flow [2024-12-02 11:04:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:04:12,669 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 142 flow [2024-12-02 11:04:12,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2024-12-02 11:04:12,675 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-12-02 11:04:12,675 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 142 flow [2024-12-02 11:04:12,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:12,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:12,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:12,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:04:12,676 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:12,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1084900215, now seen corresponding path program 1 times [2024-12-02 11:04:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797489966] [2024-12-02 11:04:12,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:12,781 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 11:04:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797489966] [2024-12-02 11:04:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797489966] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:04:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763309044] [2024-12-02 11:04:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:12,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:04:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:12,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:04:12,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:04:12,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:12,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 11:04:12,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:12,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:12,974 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-12-02 11:04:12,974 INFO L125 PetriNetUnfolderBase]: For 248/250 co-relation queries the response was YES. [2024-12-02 11:04:12,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 481 events. 212/481 cut-off events. For 248/250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2189 event pairs, 43 based on Foata normal form. 11/463 useless extension candidates. Maximal degree in co-relation 1134. Up to 285 conditions per place. [2024-12-02 11:04:12,979 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2024-12-02 11:04:12,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 356 flow [2024-12-02 11:04:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:04:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:04:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-12-02 11:04:12,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-12-02 11:04:12,980 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 142 flow. Second operand 4 states and 110 transitions. [2024-12-02 11:04:12,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 356 flow [2024-12-02 11:04:12,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 11:04:12,984 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 182 flow [2024-12-02 11:04:12,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-12-02 11:04:12,985 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-12-02 11:04:12,985 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 182 flow [2024-12-02 11:04:12,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 11:04:12,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:12,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:12,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:04:12,985 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:12,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1133944386, now seen corresponding path program 1 times [2024-12-02 11:04:12,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922549327] [2024-12-02 11:04:12,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:12,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:13,087 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 11:04:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922549327] [2024-12-02 11:04:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922549327] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:13,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:04:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932479013] [2024-12-02 11:04:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:13,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:04:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:13,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:04:13,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:04:13,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-12-02 11:04:13,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:13,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:13,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-12-02 11:04:13,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:13,174 INFO L124 PetriNetUnfolderBase]: 96/281 cut-off events. [2024-12-02 11:04:13,174 INFO L125 PetriNetUnfolderBase]: For 211/219 co-relation queries the response was YES. [2024-12-02 11:04:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 281 events. 96/281 cut-off events. For 211/219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1194 event pairs, 27 based on Foata normal form. 11/284 useless extension candidates. Maximal degree in co-relation 662. Up to 110 conditions per place. [2024-12-02 11:04:13,176 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 5 changer transitions 3/52 dead transitions. [2024-12-02 11:04:13,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 272 flow [2024-12-02 11:04:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:04:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:04:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-12-02 11:04:13,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-12-02 11:04:13,178 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 182 flow. Second operand 3 states and 80 transitions. [2024-12-02 11:04:13,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 272 flow [2024-12-02 11:04:13,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 11:04:13,181 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 150 flow [2024-12-02 11:04:13,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-12-02 11:04:13,181 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-12-02 11:04:13,181 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 150 flow [2024-12-02 11:04:13,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:13,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:13,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:13,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:04:13,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:13,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1994450441, now seen corresponding path program 1 times [2024-12-02 11:04:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985882936] [2024-12-02 11:04:13,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:13,234 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 11:04:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:13,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985882936] [2024-12-02 11:04:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985882936] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:13,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:13,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:04:13,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297825778] [2024-12-02 11:04:13,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:13,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:04:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:13,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:04:13,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:04:13,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-12-02 11:04:13,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 11:04:13,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:13,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-12-02 11:04:13,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:13,378 INFO L124 PetriNetUnfolderBase]: 131/354 cut-off events. [2024-12-02 11:04:13,378 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2024-12-02 11:04:13,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 354 events. 131/354 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1446 event pairs, 46 based on Foata normal form. 12/349 useless extension candidates. Maximal degree in co-relation 881. Up to 153 conditions per place. [2024-12-02 11:04:13,380 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-12-02 11:04:13,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 326 flow [2024-12-02 11:04:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:04:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:04:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-12-02 11:04:13,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-12-02 11:04:13,382 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 150 flow. Second operand 4 states and 93 transitions. [2024-12-02 11:04:13,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 326 flow [2024-12-02 11:04:13,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:04:13,384 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 176 flow [2024-12-02 11:04:13,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-12-02 11:04:13,385 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-12-02 11:04:13,385 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 176 flow [2024-12-02 11:04:13,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 11:04:13,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:13,385 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:13,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:04:13,386 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:13,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1698421153, now seen corresponding path program 1 times [2024-12-02 11:04:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:13,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444329533] [2024-12-02 11:04:13,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:13,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:13,491 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 11:04:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444329533] [2024-12-02 11:04:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444329533] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:13,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:04:13,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628719256] [2024-12-02 11:04:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:13,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:04:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:13,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:04:13,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:04:13,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:13,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 11:04:13,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:13,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:13,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:13,743 INFO L124 PetriNetUnfolderBase]: 176/442 cut-off events. [2024-12-02 11:04:13,743 INFO L125 PetriNetUnfolderBase]: For 493/505 co-relation queries the response was YES. [2024-12-02 11:04:13,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 442 events. 176/442 cut-off events. For 493/505 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1706 event pairs, 36 based on Foata normal form. 9/450 useless extension candidates. Maximal degree in co-relation 1169. Up to 217 conditions per place. [2024-12-02 11:04:13,745 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 11 changer transitions 7/76 dead transitions. [2024-12-02 11:04:13,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 457 flow [2024-12-02 11:04:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:04:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 11:04:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-12-02 11:04:13,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-12-02 11:04:13,747 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 176 flow. Second operand 8 states and 154 transitions. [2024-12-02 11:04:13,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 457 flow [2024-12-02 11:04:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:04:13,751 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 249 flow [2024-12-02 11:04:13,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-12-02 11:04:13,752 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-12-02 11:04:13,752 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 249 flow [2024-12-02 11:04:13,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 11:04:13,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:13,752 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:13,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:04:13,753 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:13,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash -181281542, now seen corresponding path program 1 times [2024-12-02 11:04:13,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:13,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839858884] [2024-12-02 11:04:13,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:13,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839858884] [2024-12-02 11:04:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839858884] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695168652] [2024-12-02 11:04:13,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:13,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:13,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:04:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:13,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:04:13,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:13,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:04:13,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695168652] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:04:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:04:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612502730] [2024-12-02 11:04:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:13,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:04:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:13,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:04:13,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:04:14,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-12-02 11:04:14,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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 11:04:14,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:14,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-12-02 11:04:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:14,262 INFO L124 PetriNetUnfolderBase]: 210/557 cut-off events. [2024-12-02 11:04:14,262 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2024-12-02 11:04:14,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 557 events. 210/557 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2286 event pairs, 49 based on Foata normal form. 15/571 useless extension candidates. Maximal degree in co-relation 1546. Up to 180 conditions per place. [2024-12-02 11:04:14,265 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 21 changer transitions 3/97 dead transitions. [2024-12-02 11:04:14,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 663 flow [2024-12-02 11:04:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:04:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 11:04:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-12-02 11:04:14,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-12-02 11:04:14,267 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 249 flow. Second operand 10 states and 210 transitions. [2024-12-02 11:04:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 663 flow [2024-12-02 11:04:14,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 649 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-12-02 11:04:14,272 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 424 flow [2024-12-02 11:04:14,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-12-02 11:04:14,273 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-12-02 11:04:14,273 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 424 flow [2024-12-02 11:04:14,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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 11:04:14,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:14,273 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:14,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:04:14,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:14,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:14,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1324760147, now seen corresponding path program 1 times [2024-12-02 11:04:14,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:14,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677499871] [2024-12-02 11:04:14,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 11:04:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677499871] [2024-12-02 11:04:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677499871] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:04:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064058519] [2024-12-02 11:04:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:14,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:04:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:14,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:04:14,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:04:14,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:14,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:04:14,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:14,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:14,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:14,659 INFO L124 PetriNetUnfolderBase]: 205/546 cut-off events. [2024-12-02 11:04:14,659 INFO L125 PetriNetUnfolderBase]: For 1801/1810 co-relation queries the response was YES. [2024-12-02 11:04:14,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 546 events. 205/546 cut-off events. For 1801/1810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2213 event pairs, 82 based on Foata normal form. 16/557 useless extension candidates. Maximal degree in co-relation 1749. Up to 310 conditions per place. [2024-12-02 11:04:14,663 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-12-02 11:04:14,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 609 flow [2024-12-02 11:04:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:04:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:04:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-12-02 11:04:14,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 11:04:14,665 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 424 flow. Second operand 3 states and 76 transitions. [2024-12-02 11:04:14,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 609 flow [2024-12-02 11:04:14,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 584 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 11:04:14,673 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 430 flow [2024-12-02 11:04:14,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-12-02 11:04:14,674 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-12-02 11:04:14,674 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 430 flow [2024-12-02 11:04:14,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:04:14,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:14,675 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:14,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:04:14,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:14,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash 525273007, now seen corresponding path program 1 times [2024-12-02 11:04:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342918452] [2024-12-02 11:04:14,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:14,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342918452] [2024-12-02 11:04:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342918452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390491092] [2024-12-02 11:04:14,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:14,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:14,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:14,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:14,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:04:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:14,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:04:14,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:14,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:04:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390491092] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:14,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:04:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 11:04:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136104441] [2024-12-02 11:04:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:14,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:04:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:14,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:04:14,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:04:14,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:14,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:14,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:14,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:14,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:15,204 INFO L124 PetriNetUnfolderBase]: 220/555 cut-off events. [2024-12-02 11:04:15,204 INFO L125 PetriNetUnfolderBase]: For 2071/2071 co-relation queries the response was YES. [2024-12-02 11:04:15,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 555 events. 220/555 cut-off events. For 2071/2071 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2206 event pairs, 19 based on Foata normal form. 18/555 useless extension candidates. Maximal degree in co-relation 1869. Up to 237 conditions per place. [2024-12-02 11:04:15,208 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 68 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-12-02 11:04:15,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 878 flow [2024-12-02 11:04:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:04:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 11:04:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-12-02 11:04:15,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2024-12-02 11:04:15,210 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 430 flow. Second operand 6 states and 149 transitions. [2024-12-02 11:04:15,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 878 flow [2024-12-02 11:04:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 864 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-12-02 11:04:15,220 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 436 flow [2024-12-02 11:04:15,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-12-02 11:04:15,221 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-12-02 11:04:15,221 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 436 flow [2024-12-02 11:04:15,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:15,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:15,221 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 11:04:15,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:04:15,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:15,422 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:15,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -896405618, now seen corresponding path program 1 times [2024-12-02 11:04:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555191446] [2024-12-02 11:04:15,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555191446] [2024-12-02 11:04:15,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555191446] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008315898] [2024-12-02 11:04:15,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:15,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:15,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:04:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:15,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:04:15,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:15,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008315898] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:15,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 11:04:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153019204] [2024-12-02 11:04:15,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:15,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:04:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:15,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:04:15,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:04:15,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:15,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 436 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 11:04:15,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:15,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:16,138 INFO L124 PetriNetUnfolderBase]: 477/1164 cut-off events. [2024-12-02 11:04:16,138 INFO L125 PetriNetUnfolderBase]: For 4990/4990 co-relation queries the response was YES. [2024-12-02 11:04:16,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 1164 events. 477/1164 cut-off events. For 4990/4990 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5739 event pairs, 60 based on Foata normal form. 45/1209 useless extension candidates. Maximal degree in co-relation 4183. Up to 374 conditions per place. [2024-12-02 11:04:16,148 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 131 selfloop transitions, 21 changer transitions 22/186 dead transitions. [2024-12-02 11:04:16,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1773 flow [2024-12-02 11:04:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:04:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 11:04:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-12-02 11:04:16,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7026315789473684 [2024-12-02 11:04:16,150 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 436 flow. Second operand 10 states and 267 transitions. [2024-12-02 11:04:16,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1773 flow [2024-12-02 11:04:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1748 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-12-02 11:04:16,166 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 678 flow [2024-12-02 11:04:16,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=678, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-12-02 11:04:16,167 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-12-02 11:04:16,167 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 678 flow [2024-12-02 11:04:16,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 11:04:16,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:16,167 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:16,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:04:16,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:16,368 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:16,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash -238136911, now seen corresponding path program 1 times [2024-12-02 11:04:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394693578] [2024-12-02 11:04:16,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:16,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394693578] [2024-12-02 11:04:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394693578] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:04:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264263200] [2024-12-02 11:04:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:04:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:16,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:04:16,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:04:16,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:16,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 11:04:16,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:16,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:16,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:16,746 INFO L124 PetriNetUnfolderBase]: 560/1342 cut-off events. [2024-12-02 11:04:16,746 INFO L125 PetriNetUnfolderBase]: For 8689/8696 co-relation queries the response was YES. [2024-12-02 11:04:16,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1342 events. 560/1342 cut-off events. For 8689/8696 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6877 event pairs, 51 based on Foata normal form. 36/1374 useless extension candidates. Maximal degree in co-relation 5295. Up to 461 conditions per place. [2024-12-02 11:04:16,754 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-12-02 11:04:16,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1522 flow [2024-12-02 11:04:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:04:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 11:04:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-12-02 11:04:16,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-12-02 11:04:16,756 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 678 flow. Second operand 8 states and 146 transitions. [2024-12-02 11:04:16,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1522 flow [2024-12-02 11:04:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1494 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 11:04:16,769 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 1143 flow [2024-12-02 11:04:16,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2024-12-02 11:04:16,770 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-12-02 11:04:16,770 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 1143 flow [2024-12-02 11:04:16,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 11:04:16,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:16,770 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:16,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:04:16,770 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:16,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -339898043, now seen corresponding path program 1 times [2024-12-02 11:04:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897553512] [2024-12-02 11:04:16,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897553512] [2024-12-02 11:04:16,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897553512] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281028800] [2024-12-02 11:04:16,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:16,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:16,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:16,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:16,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:04:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:16,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:04:16,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:17,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281028800] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:17,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-12-02 11:04:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588745912] [2024-12-02 11:04:17,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:17,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:04:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:17,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:04:17,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:04:17,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:17,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 1143 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:17,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:17,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:17,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:17,822 INFO L124 PetriNetUnfolderBase]: 667/1657 cut-off events. [2024-12-02 11:04:17,822 INFO L125 PetriNetUnfolderBase]: For 15775/15782 co-relation queries the response was YES. [2024-12-02 11:04:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1657 events. 667/1657 cut-off events. For 15775/15782 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8278 event pairs, 78 based on Foata normal form. 68/1721 useless extension candidates. Maximal degree in co-relation 7213. Up to 430 conditions per place. [2024-12-02 11:04:17,836 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 87 changer transitions 31/230 dead transitions. [2024-12-02 11:04:17,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 3012 flow [2024-12-02 11:04:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 11:04:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-12-02 11:04:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2024-12-02 11:04:17,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44110275689223055 [2024-12-02 11:04:17,838 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 1143 flow. Second operand 21 states and 352 transitions. [2024-12-02 11:04:17,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 3012 flow [2024-12-02 11:04:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 230 transitions, 2813 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-12-02 11:04:17,868 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 1855 flow [2024-12-02 11:04:17,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1855, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-12-02 11:04:17,869 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2024-12-02 11:04:17,869 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 1855 flow [2024-12-02 11:04:17,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:17,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:17,869 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-12-02 11:04:17,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:04:18,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 11:04:18,070 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:18,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash 278357478, now seen corresponding path program 1 times [2024-12-02 11:04:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011814614] [2024-12-02 11:04:18,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:18,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 11:04:18,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:18,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011814614] [2024-12-02 11:04:18,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011814614] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:18,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612501651] [2024-12-02 11:04:18,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:18,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:18,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:04:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:18,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:04:18,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 11:04:18,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 11:04:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612501651] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:18,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:18,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-12-02 11:04:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609872814] [2024-12-02 11:04:18,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:18,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 11:04:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:18,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 11:04:18,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:04:18,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-12-02 11:04:18,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 1855 flow. Second operand has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 11:04:18,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:18,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-12-02 11:04:18,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:19,332 INFO L124 PetriNetUnfolderBase]: 660/1764 cut-off events. [2024-12-02 11:04:19,332 INFO L125 PetriNetUnfolderBase]: For 17660/17667 co-relation queries the response was YES. [2024-12-02 11:04:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1764 events. 660/1764 cut-off events. For 17660/17667 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9296 event pairs, 230 based on Foata normal form. 8/1772 useless extension candidates. Maximal degree in co-relation 8196. Up to 931 conditions per place. [2024-12-02 11:04:19,341 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 205 selfloop transitions, 75 changer transitions 10/298 dead transitions. [2024-12-02 11:04:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 298 transitions, 3923 flow [2024-12-02 11:04:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 11:04:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-12-02 11:04:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 601 transitions. [2024-12-02 11:04:19,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2024-12-02 11:04:19,344 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 1855 flow. Second operand 31 states and 601 transitions. [2024-12-02 11:04:19,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 298 transitions, 3923 flow [2024-12-02 11:04:19,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 298 transitions, 3594 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-12-02 11:04:19,386 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2452 flow [2024-12-02 11:04:19,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2452, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2024-12-02 11:04:19,387 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 106 predicate places. [2024-12-02 11:04:19,388 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2452 flow [2024-12-02 11:04:19,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 11:04:19,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:19,388 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-12-02 11:04:19,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 11:04:19,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 11:04:19,589 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:19,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -88184484, now seen corresponding path program 2 times [2024-12-02 11:04:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:19,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567739399] [2024-12-02 11:04:19,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:04:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:19,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:04:19,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567739399] [2024-12-02 11:04:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567739399] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626700867] [2024-12-02 11:04:19,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:04:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:19,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:19,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:04:19,917 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:04:19,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:19,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:04:19,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:20,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626700867] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:20,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 11:04:20,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113610383] [2024-12-02 11:04:20,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:20,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 11:04:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:20,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 11:04:20,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-12-02 11:04:20,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:20,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2452 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 11:04:20,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:20,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:20,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:21,697 INFO L124 PetriNetUnfolderBase]: 1837/4646 cut-off events. [2024-12-02 11:04:21,697 INFO L125 PetriNetUnfolderBase]: For 46394/46394 co-relation queries the response was YES. [2024-12-02 11:04:21,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4646 events. 1837/4646 cut-off events. For 46394/46394 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 25461 event pairs, 101 based on Foata normal form. 215/4861 useless extension candidates. Maximal degree in co-relation 20930. Up to 661 conditions per place. [2024-12-02 11:04:21,724 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 531 selfloop transitions, 135 changer transitions 96/773 dead transitions. [2024-12-02 11:04:21,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 773 transitions, 11322 flow [2024-12-02 11:04:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 11:04:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 11:04:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 584 transitions. [2024-12-02 11:04:21,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6985645933014354 [2024-12-02 11:04:21,727 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2452 flow. Second operand 22 states and 584 transitions. [2024-12-02 11:04:21,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 773 transitions, 11322 flow [2024-12-02 11:04:21,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 773 transitions, 11077 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-12-02 11:04:21,795 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 4022 flow [2024-12-02 11:04:21,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4022, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-12-02 11:04:21,796 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 133 predicate places. [2024-12-02 11:04:21,796 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 4022 flow [2024-12-02 11:04:21,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 11:04:21,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:21,797 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-12-02 11:04:21,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:04:21,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 11:04:21,997 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:21,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2011131532, now seen corresponding path program 2 times [2024-12-02 11:04:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:21,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314126974] [2024-12-02 11:04:21,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:04:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:22,035 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:04:22,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 11:04:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314126974] [2024-12-02 11:04:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314126974] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231894255] [2024-12-02 11:04:22,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:04:22,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:22,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:22,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:04:22,520 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:04:22,520 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:22,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 11:04:22,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 11:04:22,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 11:04:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231894255] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:23,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-12-02 11:04:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559837302] [2024-12-02 11:04:23,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:23,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 11:04:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:23,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 11:04:23,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:04:23,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-12-02 11:04:23,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 4022 flow. Second operand has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 11:04:23,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:23,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-12-02 11:04:23,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:25,228 INFO L124 PetriNetUnfolderBase]: 1978/5172 cut-off events. [2024-12-02 11:04:25,229 INFO L125 PetriNetUnfolderBase]: For 61629/61630 co-relation queries the response was YES. [2024-12-02 11:04:25,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 5172 events. 1978/5172 cut-off events. For 61629/61630 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29588 event pairs, 834 based on Foata normal form. 16/5188 useless extension candidates. Maximal degree in co-relation 25069. Up to 2980 conditions per place. [2024-12-02 11:04:25,292 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 445 selfloop transitions, 151 changer transitions 26/630 dead transitions. [2024-12-02 11:04:25,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 630 transitions, 8937 flow [2024-12-02 11:04:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-02 11:04:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-12-02 11:04:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1291 transitions. [2024-12-02 11:04:25,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.507069913589945 [2024-12-02 11:04:25,295 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 4022 flow. Second operand 67 states and 1291 transitions. [2024-12-02 11:04:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 630 transitions, 8937 flow [2024-12-02 11:04:25,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 630 transitions, 8538 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-12-02 11:04:25,407 INFO L231 Difference]: Finished difference. Result has 244 places, 319 transitions, 5697 flow [2024-12-02 11:04:25,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5697, PETRI_PLACES=244, PETRI_TRANSITIONS=319} [2024-12-02 11:04:25,408 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 208 predicate places. [2024-12-02 11:04:25,408 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 319 transitions, 5697 flow [2024-12-02 11:04:25,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 11:04:25,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:25,409 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:25,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:04:25,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 11:04:25,610 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 155705759, now seen corresponding path program 1 times [2024-12-02 11:04:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616479437] [2024-12-02 11:04:25,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-12-02 11:04:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616479437] [2024-12-02 11:04:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616479437] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325417321] [2024-12-02 11:04:25,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:25,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:25,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:25,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:04:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:25,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 11:04:25,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-12-02 11:04:26,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-12-02 11:04:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325417321] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:26,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-12-02 11:04:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640246117] [2024-12-02 11:04:26,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:26,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 11:04:26,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:26,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 11:04:26,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:04:26,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:26,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 319 transitions, 5697 flow. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 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 11:04:26,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:26,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:26,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:28,686 INFO L124 PetriNetUnfolderBase]: 3266/8681 cut-off events. [2024-12-02 11:04:28,686 INFO L125 PetriNetUnfolderBase]: For 107941/107958 co-relation queries the response was YES. [2024-12-02 11:04:28,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41469 conditions, 8681 events. 3266/8681 cut-off events. For 107941/107958 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 56705 event pairs, 611 based on Foata normal form. 132/8803 useless extension candidates. Maximal degree in co-relation 41382. Up to 2115 conditions per place. [2024-12-02 11:04:28,749 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 331 changer transitions 18/730 dead transitions. [2024-12-02 11:04:28,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 730 transitions, 11847 flow [2024-12-02 11:04:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 11:04:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-12-02 11:04:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2024-12-02 11:04:28,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-12-02 11:04:28,752 INFO L175 Difference]: Start difference. First operand has 244 places, 319 transitions, 5697 flow. Second operand 37 states and 614 transitions. [2024-12-02 11:04:28,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 730 transitions, 11847 flow [2024-12-02 11:04:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 730 transitions, 11389 flow, removed 185 selfloop flow, removed 26 redundant places. [2024-12-02 11:04:29,202 INFO L231 Difference]: Finished difference. Result has 257 places, 503 transitions, 9272 flow [2024-12-02 11:04:29,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9272, PETRI_PLACES=257, PETRI_TRANSITIONS=503} [2024-12-02 11:04:29,203 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 221 predicate places. [2024-12-02 11:04:29,203 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 503 transitions, 9272 flow [2024-12-02 11:04:29,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 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 11:04:29,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:29,204 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:29,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:04:29,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 11:04:29,404 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:29,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1275522690, now seen corresponding path program 2 times [2024-12-02 11:04:29,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:29,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478979946] [2024-12-02 11:04:29,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:04:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:29,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:04:29,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-12-02 11:04:29,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:29,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478979946] [2024-12-02 11:04:29,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478979946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:04:29,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:04:29,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:04:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387321661] [2024-12-02 11:04:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:04:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:04:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:29,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:04:29,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:04:29,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:29,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 503 transitions, 9272 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:29,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:29,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:29,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:31,927 INFO L124 PetriNetUnfolderBase]: 3242/8735 cut-off events. [2024-12-02 11:04:31,927 INFO L125 PetriNetUnfolderBase]: For 123601/123613 co-relation queries the response was YES. [2024-12-02 11:04:31,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44213 conditions, 8735 events. 3242/8735 cut-off events. For 123601/123613 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 57458 event pairs, 353 based on Foata normal form. 21/8719 useless extension candidates. Maximal degree in co-relation 44119. Up to 2276 conditions per place. [2024-12-02 11:04:31,981 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 119 selfloop transitions, 468 changer transitions 0/595 dead transitions. [2024-12-02 11:04:31,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 595 transitions, 11539 flow [2024-12-02 11:04:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:04:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 11:04:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-12-02 11:04:31,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-12-02 11:04:31,982 INFO L175 Difference]: Start difference. First operand has 257 places, 503 transitions, 9272 flow. Second operand 10 states and 166 transitions. [2024-12-02 11:04:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 595 transitions, 11539 flow [2024-12-02 11:04:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 595 transitions, 11220 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-12-02 11:04:32,337 INFO L231 Difference]: Finished difference. Result has 258 places, 527 transitions, 10366 flow [2024-12-02 11:04:32,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10366, PETRI_PLACES=258, PETRI_TRANSITIONS=527} [2024-12-02 11:04:32,338 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 222 predicate places. [2024-12-02 11:04:32,338 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 527 transitions, 10366 flow [2024-12-02 11:04:32,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:04:32,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:32,338 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:32,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:04:32,338 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:32,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1815843129, now seen corresponding path program 3 times [2024-12-02 11:04:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060601186] [2024-12-02 11:04:32,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:04:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:32,393 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 11:04:32,394 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 11:04:32,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:32,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060601186] [2024-12-02 11:04:32,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060601186] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:32,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237235829] [2024-12-02 11:04:32,669 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:04:32,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:32,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:32,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:32,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:04:32,829 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 11:04:32,829 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:32,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 11:04:32,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 11:04:32,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 11:04:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237235829] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:33,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 11:04:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563626576] [2024-12-02 11:04:33,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:33,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 11:04:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:33,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 11:04:33,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-12-02 11:04:33,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-12-02 11:04:33,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 527 transitions, 10366 flow. Second operand has 24 states, 24 states have (on average 14.833333333333334) internal successors, (356), 24 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 11:04:33,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:33,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-12-02 11:04:33,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:37,936 INFO L124 PetriNetUnfolderBase]: 5730/15433 cut-off events. [2024-12-02 11:04:37,936 INFO L125 PetriNetUnfolderBase]: For 231225/231265 co-relation queries the response was YES. [2024-12-02 11:04:38,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80584 conditions, 15433 events. 5730/15433 cut-off events. For 231225/231265 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 119021 event pairs, 800 based on Foata normal form. 84/15517 useless extension candidates. Maximal degree in co-relation 80491. Up to 2093 conditions per place. [2024-12-02 11:04:38,085 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 458 selfloop transitions, 748 changer transitions 16/1230 dead transitions. [2024-12-02 11:04:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1230 transitions, 23488 flow [2024-12-02 11:04:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-12-02 11:04:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-12-02 11:04:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 911 transitions. [2024-12-02 11:04:38,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42059095106186517 [2024-12-02 11:04:38,087 INFO L175 Difference]: Start difference. First operand has 258 places, 527 transitions, 10366 flow. Second operand 57 states and 911 transitions. [2024-12-02 11:04:38,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1230 transitions, 23488 flow [2024-12-02 11:04:38,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1230 transitions, 23323 flow, removed 80 selfloop flow, removed 2 redundant places. [2024-12-02 11:04:38,930 INFO L231 Difference]: Finished difference. Result has 317 places, 944 transitions, 20841 flow [2024-12-02 11:04:38,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10192, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=20841, PETRI_PLACES=317, PETRI_TRANSITIONS=944} [2024-12-02 11:04:38,931 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 281 predicate places. [2024-12-02 11:04:38,931 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 944 transitions, 20841 flow [2024-12-02 11:04:38,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.833333333333334) internal successors, (356), 24 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 11:04:38,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:04:38,931 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2024-12-02 11:04:38,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:04:39,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:04:39,132 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:04:39,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -644716680, now seen corresponding path program 3 times [2024-12-02 11:04:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195655694] [2024-12-02 11:04:39,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:04:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:39,181 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 11:04:39,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:39,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195655694] [2024-12-02 11:04:39,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195655694] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:39,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621545881] [2024-12-02 11:04:39,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:04:39,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:39,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:39,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:39,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:04:39,834 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 11:04:39,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:04:39,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 11:04:39,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:04:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:39,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:04:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:04:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621545881] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:04:40,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:04:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-12-02 11:04:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866320604] [2024-12-02 11:04:40,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:04:40,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 11:04:40,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:04:40,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 11:04:40,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 11:04:40,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:04:40,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 944 transitions, 20841 flow. Second operand has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 11:04:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:04:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:04:40,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:04:57,007 INFO L124 PetriNetUnfolderBase]: 15134/39291 cut-off events. [2024-12-02 11:04:57,007 INFO L125 PetriNetUnfolderBase]: For 832758/832758 co-relation queries the response was YES. [2024-12-02 11:04:57,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222663 conditions, 39291 events. 15134/39291 cut-off events. For 832758/832758 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 301994 event pairs, 402 based on Foata normal form. 1787/41078 useless extension candidates. Maximal degree in co-relation 222565. Up to 5491 conditions per place. [2024-12-02 11:04:57,421 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 4212 selfloop transitions, 1530 changer transitions 805/6557 dead transitions. [2024-12-02 11:04:57,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 6557 transitions, 142179 flow [2024-12-02 11:04:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 11:04:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-12-02 11:04:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1226 transitions. [2024-12-02 11:04:57,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7013729977116705 [2024-12-02 11:04:57,423 INFO L175 Difference]: Start difference. First operand has 317 places, 944 transitions, 20841 flow. Second operand 46 states and 1226 transitions. [2024-12-02 11:04:57,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 6557 transitions, 142179 flow [2024-12-02 11:05:00,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 6557 transitions, 141000 flow, removed 571 selfloop flow, removed 11 redundant places. [2024-12-02 11:05:00,471 INFO L231 Difference]: Finished difference. Result has 375 places, 1896 transitions, 48728 flow [2024-12-02 11:05:00,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20740, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=650, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=48728, PETRI_PLACES=375, PETRI_TRANSITIONS=1896} [2024-12-02 11:05:00,472 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 339 predicate places. [2024-12-02 11:05:00,473 INFO L471 AbstractCegarLoop]: Abstraction has has 375 places, 1896 transitions, 48728 flow [2024-12-02 11:05:00,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 11:05:00,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:05:00,473 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 22, 16, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:05:00,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:05:00,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 11:05:00,673 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:05:00,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:05:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 610628457, now seen corresponding path program 4 times [2024-12-02 11:05:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:05:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806518762] [2024-12-02 11:05:00,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:05:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:05:00,733 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:05:00,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:05:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:05:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:05:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806518762] [2024-12-02 11:05:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806518762] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:05:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158844059] [2024-12-02 11:05:02,941 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:05:02,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:05:02,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:05:02,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:05:02,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:05:03,177 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:05:03,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:05:03,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 11:05:03,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:05:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 836 proven. 186 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-12-02 11:05:03,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:05:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 836 proven. 186 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-12-02 11:05:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158844059] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:05:04,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:05:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15, 15] total 76 [2024-12-02 11:05:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028396433] [2024-12-02 11:05:04,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:05:04,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 11:05:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:05:04,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 11:05:04,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=4887, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 11:05:04,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-12-02 11:05:04,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1896 transitions, 48728 flow. Second operand has 76 states, 76 states have (on average 12.56578947368421) internal successors, (955), 76 states have internal predecessors, (955), 0 states have call successors, (0), 0 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 11:05:04,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:05:04,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-12-02 11:05:04,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:29,348 INFO L124 PetriNetUnfolderBase]: 22847/60559 cut-off events. [2024-12-02 11:07:29,349 INFO L125 PetriNetUnfolderBase]: For 1419309/1419309 co-relation queries the response was YES. [2024-12-02 11:07:30,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359137 conditions, 60559 events. 22847/60559 cut-off events. For 1419309/1419309 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 516854 event pairs, 177 based on Foata normal form. 573/61132 useless extension candidates. Maximal degree in co-relation 359014. Up to 9299 conditions per place. [2024-12-02 11:07:30,184 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 7886 selfloop transitions, 7302 changer transitions 1216/16411 dead transitions. [2024-12-02 11:07:30,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2511 places, 16411 transitions, 272315 flow [2024-12-02 11:07:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2141 states. [2024-12-02 11:07:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2024-12-02 11:07:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 30101 transitions. [2024-12-02 11:07:30,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36998205462277833 [2024-12-02 11:07:30,217 INFO L175 Difference]: Start difference. First operand has 375 places, 1896 transitions, 48728 flow. Second operand 2141 states and 30101 transitions. [2024-12-02 11:07:30,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2511 places, 16411 transitions, 272315 flow [2024-12-02 11:07:39,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2491 places, 16411 transitions, 261522 flow, removed 4136 selfloop flow, removed 20 redundant places. [2024-12-02 11:07:39,775 INFO L231 Difference]: Finished difference. Result has 2953 places, 7519 transitions, 174207 flow [2024-12-02 11:07:39,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=43911, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1820, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2141, PETRI_FLOW=174207, PETRI_PLACES=2953, PETRI_TRANSITIONS=7519} [2024-12-02 11:07:39,778 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 2917 predicate places. [2024-12-02 11:07:39,778 INFO L471 AbstractCegarLoop]: Abstraction has has 2953 places, 7519 transitions, 174207 flow [2024-12-02 11:07:39,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 12.56578947368421) internal successors, (955), 76 states have internal predecessors, (955), 0 states have call successors, (0), 0 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 11:07:39,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:39,779 INFO L206 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 24, 24, 23, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:39,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 11:07:39,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:07:39,980 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-12-02 11:07:39,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1295935520, now seen corresponding path program 5 times [2024-12-02 11:07:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:39,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978536030] [2024-12-02 11:07:39,981 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:07:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:40,046 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-12-02 11:07:40,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:07:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:41,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978536030] [2024-12-02 11:07:41,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978536030] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:07:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891843678] [2024-12-02 11:07:41,370 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:07:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:07:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:07:41,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:07:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef16e50e-37b9-4be0-9bef-9547535b5616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:07:41,583 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-12-02 11:07:41,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:07:41,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 11:07:41,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:07:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:41,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:07:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891843678] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:07:43,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:07:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-12-02 11:07:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059851881] [2024-12-02 11:07:43,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:07:43,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-12-02 11:07:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:43,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-12-02 11:07:43,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 11:07:43,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-12-02 11:07:43,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2953 places, 7519 transitions, 174207 flow. Second operand has 98 states, 98 states have (on average 17.96938775510204) internal successors, (1761), 98 states have internal predecessors, (1761), 0 states have call successors, (0), 0 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 11:07:43,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:43,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-12-02 11:07:43,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:12:47,881 INFO L124 PetriNetUnfolderBase]: 51373/135352 cut-off events. [2024-12-02 11:12:47,881 INFO L125 PetriNetUnfolderBase]: For 16695948/16695948 co-relation queries the response was YES. [2024-12-02 11:12:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116980 conditions, 135352 events. 51373/135352 cut-off events. For 16695948/16695948 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 1153752 event pairs, 1141 based on Foata normal form. 5550/140901 useless extension candidates. Maximal degree in co-relation 1116395. Up to 21699 conditions per place. [2024-12-02 11:12:57,964 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 13079 selfloop transitions, 6152 changer transitions 1910/21151 dead transitions. [2024-12-02 11:12:57,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2844 places, 21151 transitions, 599685 flow [2024-12-02 11:12:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 11:12:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2024-12-02 11:12:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 2617 transitions. [2024-12-02 11:12:57,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7027389903329753 [2024-12-02 11:12:57,969 INFO L175 Difference]: Start difference. First operand has 2953 places, 7519 transitions, 174207 flow. Second operand 98 states and 2617 transitions. [2024-12-02 11:12:57,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2844 places, 21151 transitions, 599685 flow