./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:41:57,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:41:57,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:41:57,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:41:57,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:41:57,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:41:57,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:41:57,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:41:57,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:41:57,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:41:57,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:41:57,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:41:57,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:41:57,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:41:57,514 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:41:57,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:41:57,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:41:57,514 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:41:57,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:41:57,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:41:57,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:41:57,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:41:57,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:41:57,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:41:57,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:41:57,516 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:41:57,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:41:57,517 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:41:57,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:41:57,517 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:41:57,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:41:57,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:41:57,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:41:57,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:41:57,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:41:57,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:41:57,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:41:57,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:41:57,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:41:57,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:41:57,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:41:57,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:41:57,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:41:57,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:41:57,525 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-10-13 16:41:57,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:41:57,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:41:57,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:41:57,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:41:57,749 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:41:57,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-10-13 16:41:59,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:41:59,224 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:41:59,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-10-13 16:41:59,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b848bb81/5a335f55314d4bc5916c3c3876c8558e/FLAG9c8d72a11 [2024-10-13 16:41:59,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b848bb81/5a335f55314d4bc5916c3c3876c8558e [2024-10-13 16:41:59,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:41:59,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:41:59,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:41:59,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:41:59,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:41:59,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:41:59" (1/1) ... [2024-10-13 16:41:59,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc650b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:59, skipping insertion in model container [2024-10-13 16:41:59,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:41:59" (1/1) ... [2024-10-13 16:41:59,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:42:00,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:00,099 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:42:00,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:00,205 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:42:00,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00 WrapperNode [2024-10-13 16:42:00,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:42:00,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:00,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:42:00,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:42:00,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,258 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2024-10-13 16:42:00,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:00,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:42:00,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:42:00,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:42:00,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,296 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-10-13 16:42:00,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:42:00,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:42:00,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:42:00,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:42:00,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (1/1) ... [2024-10-13 16:42:00,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:42:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:00,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:42:00,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:42:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:42:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:42:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:42:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:42:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:42:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:42:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:42:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:42:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:42:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:42:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:42:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:42:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:42:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:42:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:42:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:42:00,400 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:42:00,525 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:42:00,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:42:00,776 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:42:00,776 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:42:00,913 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:42:00,913 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 16:42:00,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:00 BoogieIcfgContainer [2024-10-13 16:42:00,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:42:00,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:42:00,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:42:00,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:42:00,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:41:59" (1/3) ... [2024-10-13 16:42:00,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:00, skipping insertion in model container [2024-10-13 16:42:00,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:00" (2/3) ... [2024-10-13 16:42:00,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:00, skipping insertion in model container [2024-10-13 16:42:00,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:00" (3/3) ... [2024-10-13 16:42:00,923 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-10-13 16:42:00,938 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:42:00,938 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:42:00,938 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:42:00,971 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:42:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions, 141 flow [2024-10-13 16:42:01,034 INFO L124 PetriNetUnfolderBase]: 17/89 cut-off events. [2024-10-13 16:42:01,034 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:01,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 17/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 271 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2024-10-13 16:42:01,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions, 141 flow [2024-10-13 16:42:01,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 66 transitions, 139 flow [2024-10-13 16:42:01,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:01,060 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;@7f3fb66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:01,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 16:42:01,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:01,068 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-13 16:42:01,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:01,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:01,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:01,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:01,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 379522226, now seen corresponding path program 1 times [2024-10-13 16:42:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129464977] [2024-10-13 16:42:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129464977] [2024-10-13 16:42:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129464977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505845216] [2024-10-13 16:42:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:01,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:01,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-10-13 16:42:01,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:01,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:01,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-10-13 16:42:01,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:01,692 INFO L124 PetriNetUnfolderBase]: 159/431 cut-off events. [2024-10-13 16:42:01,693 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:01,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 431 events. 159/431 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2126 event pairs, 20 based on Foata normal form. 72/444 useless extension candidates. Maximal degree in co-relation 709. Up to 264 conditions per place. [2024-10-13 16:42:01,701 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-13 16:42:01,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 265 flow [2024-10-13 16:42:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-10-13 16:42:01,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7052238805970149 [2024-10-13 16:42:01,721 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 139 flow. Second operand 4 states and 189 transitions. [2024-10-13 16:42:01,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 265 flow [2024-10-13 16:42:01,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:01,729 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 129 flow [2024-10-13 16:42:01,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-10-13 16:42:01,735 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-10-13 16:42:01,735 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 129 flow [2024-10-13 16:42:01,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:01,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:01,739 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:01,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:42:01,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:01,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1993082579, now seen corresponding path program 1 times [2024-10-13 16:42:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540918223] [2024-10-13 16:42:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:01,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:01,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:01,835 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:01,836 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-13 16:42:01,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-13 16:42:01,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-13 16:42:01,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-13 16:42:01,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-13 16:42:01,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-13 16:42:01,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-13 16:42:01,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-13 16:42:01,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-13 16:42:01,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-13 16:42:01,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-13 16:42:01,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-13 16:42:01,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-13 16:42:01,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:42:01,844 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 16:42:01,847 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:01,848 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 16:42:01,867 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:42:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 100 transitions, 216 flow [2024-10-13 16:42:01,887 INFO L124 PetriNetUnfolderBase]: 30/163 cut-off events. [2024-10-13 16:42:01,887 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:42:01,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 163 events. 30/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 593 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 98. Up to 9 conditions per place. [2024-10-13 16:42:01,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 100 transitions, 216 flow [2024-10-13 16:42:01,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 100 transitions, 216 flow [2024-10-13 16:42:01,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:01,891 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;@7f3fb66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:01,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-13 16:42:01,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:01,894 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-13 16:42:01,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:01,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:01,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:01,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:01,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 474982517, now seen corresponding path program 1 times [2024-10-13 16:42:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:01,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102285025] [2024-10-13 16:42:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:01,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:01,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102285025] [2024-10-13 16:42:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102285025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:01,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30548672] [2024-10-13 16:42:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:01,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:01,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-13 16:42:01,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:01,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:01,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-13 16:42:01,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:02,937 INFO L124 PetriNetUnfolderBase]: 4611/9735 cut-off events. [2024-10-13 16:42:02,938 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-13 16:42:02,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 9735 events. 4611/9735 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 83375 event pairs, 1952 based on Foata normal form. 1699/10288 useless extension candidates. Maximal degree in co-relation 1345. Up to 6969 conditions per place. [2024-10-13 16:42:03,018 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 65 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-13 16:42:03,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 374 flow [2024-10-13 16:42:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-10-13 16:42:03,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725 [2024-10-13 16:42:03,021 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 216 flow. Second operand 4 states and 269 transitions. [2024-10-13 16:42:03,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 374 flow [2024-10-13 16:42:03,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:03,024 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 212 flow [2024-10-13 16:42:03,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-10-13 16:42:03,025 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-13 16:42:03,025 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 212 flow [2024-10-13 16:42:03,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:03,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:03,026 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:03,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:42:03,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:03,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -842024632, now seen corresponding path program 1 times [2024-10-13 16:42:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034754355] [2024-10-13 16:42:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:03,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034754355] [2024-10-13 16:42:03,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034754355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23690043] [2024-10-13 16:42:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:03,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:03,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:42:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:03,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:42:03,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:03,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:42:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23690043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:03,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:42:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:42:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508331862] [2024-10-13 16:42:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:03,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:42:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:42:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:42:03,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-13 16:42:03,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:03,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:03,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-13 16:42:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:03,987 INFO L124 PetriNetUnfolderBase]: 3957/8025 cut-off events. [2024-10-13 16:42:03,987 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-10-13 16:42:04,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 8025 events. 3957/8025 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 64932 event pairs, 264 based on Foata normal form. 144/7265 useless extension candidates. Maximal degree in co-relation 1212. Up to 3893 conditions per place. [2024-10-13 16:42:04,074 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 105 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-10-13 16:42:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 564 flow [2024-10-13 16:42:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:42:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:42:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-10-13 16:42:04,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-13 16:42:04,079 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 212 flow. Second operand 6 states and 370 transitions. [2024-10-13 16:42:04,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 564 flow [2024-10-13 16:42:04,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:42:04,084 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 218 flow [2024-10-13 16:42:04,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-10-13 16:42:04,086 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2024-10-13 16:42:04,087 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 218 flow [2024-10-13 16:42:04,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:04,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:04,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:04,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:42:04,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:04,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:04,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash -124472098, now seen corresponding path program 1 times [2024-10-13 16:42:04,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767168130] [2024-10-13 16:42:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:04,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767168130] [2024-10-13 16:42:04,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767168130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:04,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554090257] [2024-10-13 16:42:04,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:04,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:04,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-10-13 16:42:04,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:04,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:04,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-10-13 16:42:04,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:05,438 INFO L124 PetriNetUnfolderBase]: 6320/12941 cut-off events. [2024-10-13 16:42:05,438 INFO L125 PetriNetUnfolderBase]: For 1175/1336 co-relation queries the response was YES. [2024-10-13 16:42:05,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23410 conditions, 12941 events. 6320/12941 cut-off events. For 1175/1336 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 112465 event pairs, 1495 based on Foata normal form. 222/11783 useless extension candidates. Maximal degree in co-relation 18886. Up to 6459 conditions per place. [2024-10-13 16:42:05,502 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 122 selfloop transitions, 12 changer transitions 0/178 dead transitions. [2024-10-13 16:42:05,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 722 flow [2024-10-13 16:42:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:42:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:42:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2024-10-13 16:42:05,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-13 16:42:05,504 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 218 flow. Second operand 5 states and 355 transitions. [2024-10-13 16:42:05,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 722 flow [2024-10-13 16:42:05,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 699 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 16:42:05,510 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 300 flow [2024-10-13 16:42:05,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-13 16:42:05,510 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2024-10-13 16:42:05,511 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 300 flow [2024-10-13 16:42:05,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:05,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:05,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:42:05,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:42:05,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:05,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -332959344, now seen corresponding path program 1 times [2024-10-13 16:42:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:05,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46658090] [2024-10-13 16:42:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:05,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:42:05,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:05,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46658090] [2024-10-13 16:42:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46658090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:05,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191065536] [2024-10-13 16:42:05,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:05,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:05,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:05,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-13 16:42:05,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:05,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:05,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-13 16:42:05,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:06,546 INFO L124 PetriNetUnfolderBase]: 5565/11300 cut-off events. [2024-10-13 16:42:06,547 INFO L125 PetriNetUnfolderBase]: For 3880/3885 co-relation queries the response was YES. [2024-10-13 16:42:06,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22980 conditions, 11300 events. 5565/11300 cut-off events. For 3880/3885 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 94885 event pairs, 1085 based on Foata normal form. 160/10328 useless extension candidates. Maximal degree in co-relation 19721. Up to 7389 conditions per place. [2024-10-13 16:42:06,626 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 103 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-10-13 16:42:06,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 688 flow [2024-10-13 16:42:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-10-13 16:42:06,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-10-13 16:42:06,629 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 300 flow. Second operand 4 states and 259 transitions. [2024-10-13 16:42:06,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 688 flow [2024-10-13 16:42:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 684 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:42:06,642 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 312 flow [2024-10-13 16:42:06,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-10-13 16:42:06,644 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-10-13 16:42:06,644 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 312 flow [2024-10-13 16:42:06,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:06,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:06,645 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-13 16:42:06,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:42:06,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:06,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2146333056, now seen corresponding path program 1 times [2024-10-13 16:42:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53064069] [2024-10-13 16:42:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:06,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:06,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:06,686 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:06,687 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-13 16:42:06,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-13 16:42:06,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-13 16:42:06,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-13 16:42:06,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-13 16:42:06,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-13 16:42:06,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-13 16:42:06,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-13 16:42:06,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-13 16:42:06,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-13 16:42:06,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-13 16:42:06,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-13 16:42:06,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:42:06,692 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 16:42:06,693 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:06,693 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 16:42:06,720 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:42:06,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 133 transitions, 293 flow [2024-10-13 16:42:06,748 INFO L124 PetriNetUnfolderBase]: 46/256 cut-off events. [2024-10-13 16:42:06,748 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:42:06,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 46/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 1 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-10-13 16:42:06,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 133 transitions, 293 flow [2024-10-13 16:42:06,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 133 transitions, 293 flow [2024-10-13 16:42:06,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:06,753 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;@7f3fb66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:06,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 16:42:06,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:06,756 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-13 16:42:06,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:06,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:06,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:06,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:06,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash 601934873, now seen corresponding path program 1 times [2024-10-13 16:42:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:06,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148773099] [2024-10-13 16:42:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148773099] [2024-10-13 16:42:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148773099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461855776] [2024-10-13 16:42:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:06,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:06,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-13 16:42:06,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:06,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:06,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-13 16:42:06,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:16,933 INFO L124 PetriNetUnfolderBase]: 86447/153025 cut-off events. [2024-10-13 16:42:16,934 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-10-13 16:42:17,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271744 conditions, 153025 events. 86447/153025 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 3550. Compared 1600832 event pairs, 52468 based on Foata normal form. 31112/168963 useless extension candidates. Maximal degree in co-relation 17771. Up to 117557 conditions per place. [2024-10-13 16:42:18,092 INFO L140 encePairwiseOnDemand]: 107/133 looper letters, 78 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-13 16:42:18,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 465 flow [2024-10-13 16:42:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-10-13 16:42:18,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-10-13 16:42:18,094 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 293 flow. Second operand 4 states and 344 transitions. [2024-10-13 16:42:18,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 465 flow [2024-10-13 16:42:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 138 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:18,099 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 277 flow [2024-10-13 16:42:18,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2024-10-13 16:42:18,100 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-10-13 16:42:18,100 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 277 flow [2024-10-13 16:42:18,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:18,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:18,101 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:18,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:42:18,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:18,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1310171192, now seen corresponding path program 1 times [2024-10-13 16:42:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518441920] [2024-10-13 16:42:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518441920] [2024-10-13 16:42:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518441920] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499069185] [2024-10-13 16:42:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:18,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:18,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:42:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:18,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:42:18,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:18,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:42:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499069185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:18,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:42:18,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:42:18,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938982766] [2024-10-13 16:42:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:18,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:42:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:18,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:42:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:42:18,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-13 16:42:18,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:18,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:18,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-13 16:42:18,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:26,914 INFO L124 PetriNetUnfolderBase]: 71934/122935 cut-off events. [2024-10-13 16:42:26,915 INFO L125 PetriNetUnfolderBase]: For 7069/7069 co-relation queries the response was YES. [2024-10-13 16:42:27,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227553 conditions, 122935 events. 71934/122935 cut-off events. For 7069/7069 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 1214493 event pairs, 8196 based on Foata normal form. 1872/112848 useless extension candidates. Maximal degree in co-relation 19282. Up to 63134 conditions per place. [2024-10-13 16:42:27,734 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 140 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2024-10-13 16:42:27,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 743 flow [2024-10-13 16:42:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:42:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:42:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2024-10-13 16:42:27,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-10-13 16:42:27,736 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 277 flow. Second operand 6 states and 489 transitions. [2024-10-13 16:42:27,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 743 flow [2024-10-13 16:42:27,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:42:27,743 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 283 flow [2024-10-13 16:42:27,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-10-13 16:42:27,745 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2024-10-13 16:42:27,745 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 283 flow [2024-10-13 16:42:27,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:27,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:27,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:27,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:42:27,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 16:42:27,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:27,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 432179197, now seen corresponding path program 1 times [2024-10-13 16:42:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:27,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129281498] [2024-10-13 16:42:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:27,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129281498] [2024-10-13 16:42:27,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129281498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:27,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124918094] [2024-10-13 16:42:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:27,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:27,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:27,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2024-10-13 16:42:27,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:27,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:27,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2024-10-13 16:42:28,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:42,176 INFO L124 PetriNetUnfolderBase]: 123460/213529 cut-off events. [2024-10-13 16:42:42,177 INFO L125 PetriNetUnfolderBase]: For 18650/20898 co-relation queries the response was YES. [2024-10-13 16:42:42,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392961 conditions, 213529 events. 123460/213529 cut-off events. For 18650/20898 co-relation queries the response was YES. Maximal size of possible extension queue 4968. Compared 2246257 event pairs, 39792 based on Foata normal form. 3005/196357 useless extension candidates. Maximal degree in co-relation 265555. Up to 115524 conditions per place. [2024-10-13 16:42:43,956 INFO L140 encePairwiseOnDemand]: 122/133 looper letters, 174 selfloop transitions, 16 changer transitions 0/248 dead transitions. [2024-10-13 16:42:43,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 248 transitions, 1015 flow [2024-10-13 16:42:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:42:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:42:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2024-10-13 16:42:43,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7233082706766917 [2024-10-13 16:42:43,958 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 283 flow. Second operand 5 states and 481 transitions. [2024-10-13 16:42:43,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 248 transitions, 1015 flow [2024-10-13 16:42:43,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 248 transitions, 992 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 16:42:43,972 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 399 flow [2024-10-13 16:42:43,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2024-10-13 16:42:43,973 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 12 predicate places. [2024-10-13 16:42:43,973 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 399 flow [2024-10-13 16:42:43,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:43,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:43,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:42:43,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:42:43,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:43,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1960600683, now seen corresponding path program 1 times [2024-10-13 16:42:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:43,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861175105] [2024-10-13 16:42:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:42:44,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:44,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861175105] [2024-10-13 16:42:44,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861175105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:44,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:44,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751690026] [2024-10-13 16:42:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:44,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-13 16:42:44,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:44,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:44,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-13 16:42:44,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand