./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/queue.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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:26:09,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:26:10,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:26:10,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:26:10,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:26:10,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:26:10,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:26:10,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:26:10,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:26:10,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:26:10,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:26:10,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:26:10,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:26:10,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:26:10,107 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:26:10,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:26:10,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:26:10,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:26:10,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:26:10,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:26:10,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:26:10,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:26:10,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:26:10,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:26:10,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:26:10,116 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:26:10,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:26:10,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:26:10,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:26:10,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:26:10,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:26:10,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:26:10,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:26:10,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:26:10,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:26:10,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:26:10,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:26:10,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:26:10,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:26:10,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:26:10,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:26:10,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:26:10,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:26:10,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:26:10,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-12 20:26:10,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:26:10,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:26:10,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:26:10,375 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:26:10,375 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:26:10,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-12 20:26:11,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:26:12,086 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:26:12,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-12 20:26:12,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9588e53/69c2f5e15670421ab0387bead72f8dad/FLAG0b978b050 [2024-11-12 20:26:12,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9588e53/69c2f5e15670421ab0387bead72f8dad [2024-11-12 20:26:12,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:26:12,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:26:12,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:26:12,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:26:12,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:26:12,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:26:12" (1/1) ... [2024-11-12 20:26:12,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c54c949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:12, skipping insertion in model container [2024-11-12 20:26:12,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:26:12" (1/1) ... [2024-11-12 20:26:12,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:26:12,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:26:12,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:26:13,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:26:13,083 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:26:13,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13 WrapperNode [2024-11-12 20:26:13,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:26:13,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:26:13,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:26:13,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:26:13,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,152 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 313 [2024-11-12 20:26:13,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:26:13,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:26:13,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:26:13,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:26:13,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,193 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-12 20:26:13,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:26:13,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:26:13,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:26:13,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:26:13,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (1/1) ... [2024-11-12 20:26:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:26:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:13,276 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) [2024-11-12 20:26:13,280 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 [2024-11-12 20:26:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 20:26:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 20:26:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 20:26:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 20:26:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:26:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:26:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:26:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:26:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 20:26:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:26:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:26:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:26:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 20:26:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 20:26:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:26:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:26:13,355 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:26:13,526 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:26:13,529 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:26:14,058 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:26:14,059 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:26:14,489 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:26:14,489 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:26:14,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:26:14 BoogieIcfgContainer [2024-11-12 20:26:14,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:26:14,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:26:14,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:26:14,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:26:14,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:26:12" (1/3) ... [2024-11-12 20:26:14,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:26:14, skipping insertion in model container [2024-11-12 20:26:14,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:13" (2/3) ... [2024-11-12 20:26:14,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:26:14, skipping insertion in model container [2024-11-12 20:26:14,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:26:14" (3/3) ... [2024-11-12 20:26:14,528 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-12 20:26:14,545 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:26:14,545 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-12 20:26:14,545 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:26:14,632 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:26:14,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-12 20:26:14,706 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-12 20:26:14,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:26:14,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-12 20:26:14,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-12 20:26:14,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2024-11-12 20:26:14,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:26:14,730 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;@3b458683, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:26:14,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-12 20:26:14,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:26:14,737 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-12 20:26:14,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:26:14,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:14,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:14,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:14,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1519906022, now seen corresponding path program 1 times [2024-11-12 20:26:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:14,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652586518] [2024-11-12 20:26:14,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:14,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:15,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652586518] [2024-11-12 20:26:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652586518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:15,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:26:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050301264] [2024-11-12 20:26:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:15,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:15,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:15,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:15,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:15,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:15,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:15,959 INFO L124 PetriNetUnfolderBase]: 1236/2547 cut-off events. [2024-11-12 20:26:15,960 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-12 20:26:15,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4531 conditions, 2547 events. 1236/2547 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15910 event pairs, 205 based on Foata normal form. 48/2218 useless extension candidates. Maximal degree in co-relation 4460. Up to 1613 conditions per place. [2024-11-12 20:26:15,979 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-11-12 20:26:15,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 395 flow [2024-11-12 20:26:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-12 20:26:15,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-12 20:26:15,993 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 4 states and 210 transitions. [2024-11-12 20:26:15,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 395 flow [2024-11-12 20:26:15,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:16,000 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 204 flow [2024-11-12 20:26:16,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-12 20:26:16,004 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-11-12 20:26:16,005 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 204 flow [2024-11-12 20:26:16,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:16,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:16,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:16,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:26:16,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:16,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash -127552721, now seen corresponding path program 1 times [2024-11-12 20:26:16,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:16,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694257639] [2024-11-12 20:26:16,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:16,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:16,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694257639] [2024-11-12 20:26:16,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694257639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:16,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:16,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:26:16,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22989858] [2024-11-12 20:26:16,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:16,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:16,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:16,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:16,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:16,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:16,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:16,728 INFO L124 PetriNetUnfolderBase]: 1242/2600 cut-off events. [2024-11-12 20:26:16,729 INFO L125 PetriNetUnfolderBase]: For 456/460 co-relation queries the response was YES. [2024-11-12 20:26:16,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2600 events. 1242/2600 cut-off events. For 456/460 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16670 event pairs, 264 based on Foata normal form. 40/2318 useless extension candidates. Maximal degree in co-relation 4140. Up to 1757 conditions per place. [2024-11-12 20:26:16,746 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-11-12 20:26:16,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 460 flow [2024-11-12 20:26:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:26:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:26:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-12 20:26:16,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-12 20:26:16,749 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 204 flow. Second operand 5 states and 250 transitions. [2024-11-12 20:26:16,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 460 flow [2024-11-12 20:26:16,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:16,754 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 221 flow [2024-11-12 20:26:16,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-11-12 20:26:16,755 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-11-12 20:26:16,756 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 221 flow [2024-11-12 20:26:16,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:16,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:16,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:16,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:26:16,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:16,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1975914034, now seen corresponding path program 1 times [2024-11-12 20:26:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005710394] [2024-11-12 20:26:16,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:17,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005710394] [2024-11-12 20:26:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005710394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:17,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:17,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965048724] [2024-11-12 20:26:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:17,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:26:17,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:17,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:17,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:17,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:17,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:17,500 INFO L124 PetriNetUnfolderBase]: 1322/2710 cut-off events. [2024-11-12 20:26:17,501 INFO L125 PetriNetUnfolderBase]: For 536/554 co-relation queries the response was YES. [2024-11-12 20:26:17,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 2710 events. 1322/2710 cut-off events. For 536/554 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17287 event pairs, 266 based on Foata normal form. 44/2400 useless extension candidates. Maximal degree in co-relation 4439. Up to 1803 conditions per place. [2024-11-12 20:26:17,515 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-11-12 20:26:17,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 589 flow [2024-11-12 20:26:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:26:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:26:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-11-12 20:26:17,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5664451827242525 [2024-11-12 20:26:17,518 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 221 flow. Second operand 7 states and 341 transitions. [2024-11-12 20:26:17,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 589 flow [2024-11-12 20:26:17,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 575 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:17,523 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 276 flow [2024-11-12 20:26:17,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-12 20:26:17,525 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-12 20:26:17,525 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 276 flow [2024-11-12 20:26:17,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:17,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:17,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:17,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:26:17,526 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:17,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -199380083, now seen corresponding path program 1 times [2024-11-12 20:26:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530397411] [2024-11-12 20:26:17,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:17,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530397411] [2024-11-12 20:26:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530397411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:17,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:26:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412857243] [2024-11-12 20:26:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:17,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:26:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:26:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:26:17,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-12 20:26:17,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:17,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:17,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-12 20:26:17,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:17,880 INFO L124 PetriNetUnfolderBase]: 1023/2392 cut-off events. [2024-11-12 20:26:17,881 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-11-12 20:26:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 2392 events. 1023/2392 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14077 event pairs, 483 based on Foata normal form. 41/2132 useless extension candidates. Maximal degree in co-relation 4354. Up to 885 conditions per place. [2024-11-12 20:26:17,896 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 64 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-12 20:26:17,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 374 flow [2024-11-12 20:26:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:26:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:26:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-12 20:26:17,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-11-12 20:26:17,899 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 276 flow. Second operand 3 states and 176 transitions. [2024-11-12 20:26:17,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 374 flow [2024-11-12 20:26:17,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 335 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-12 20:26:17,903 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 169 flow [2024-11-12 20:26:17,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-12 20:26:17,904 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-12 20:26:17,904 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 169 flow [2024-11-12 20:26:17,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:17,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:17,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:17,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:26:17,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:17,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1669265840, now seen corresponding path program 1 times [2024-11-12 20:26:17,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:17,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701155254] [2024-11-12 20:26:17,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:17,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701155254] [2024-11-12 20:26:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701155254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:17,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501808467] [2024-11-12 20:26:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:17,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:18,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-12 20:26:18,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:18,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:18,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-12 20:26:18,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:18,515 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-12 20:26:18,515 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-12 20:26:18,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7405 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26847 event pairs, 960 based on Foata normal form. 138/3776 useless extension candidates. Maximal degree in co-relation 7400. Up to 1980 conditions per place. [2024-11-12 20:26:18,536 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 113 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-12 20:26:18,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 554 flow [2024-11-12 20:26:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-12 20:26:18,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2024-11-12 20:26:18,538 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 169 flow. Second operand 4 states and 252 transitions. [2024-11-12 20:26:18,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 554 flow [2024-11-12 20:26:18,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:18,542 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 190 flow [2024-11-12 20:26:18,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-11-12 20:26:18,542 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-12 20:26:18,543 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 190 flow [2024-11-12 20:26:18,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:18,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:18,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:18,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:26:18,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:18,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1296984019, now seen corresponding path program 1 times [2024-11-12 20:26:18,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:18,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959329295] [2024-11-12 20:26:18,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:18,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959329295] [2024-11-12 20:26:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959329295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:18,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:18,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:26:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686890856] [2024-11-12 20:26:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:18,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:26:18,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-12 20:26:18,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:18,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:18,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-12 20:26:18,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:19,301 INFO L124 PetriNetUnfolderBase]: 1715/3861 cut-off events. [2024-11-12 20:26:19,302 INFO L125 PetriNetUnfolderBase]: For 784/904 co-relation queries the response was YES. [2024-11-12 20:26:19,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 3861 events. 1715/3861 cut-off events. For 784/904 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25084 event pairs, 279 based on Foata normal form. 0/3419 useless extension candidates. Maximal degree in co-relation 7358. Up to 2409 conditions per place. [2024-11-12 20:26:19,327 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 75 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-12 20:26:19,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 468 flow [2024-11-12 20:26:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:26:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:26:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-11-12 20:26:19,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.586046511627907 [2024-11-12 20:26:19,329 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 190 flow. Second operand 5 states and 252 transitions. [2024-11-12 20:26:19,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 468 flow [2024-11-12 20:26:19,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:19,333 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 196 flow [2024-11-12 20:26:19,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-11-12 20:26:19,334 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-11-12 20:26:19,334 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 196 flow [2024-11-12 20:26:19,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:19,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:19,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:19,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:26:19,335 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:19,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:19,335 INFO L85 PathProgramCache]: Analyzing trace with hash -649880907, now seen corresponding path program 1 times [2024-11-12 20:26:19,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507888593] [2024-11-12 20:26:19,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:20,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507888593] [2024-11-12 20:26:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507888593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:20,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:20,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:26:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518788701] [2024-11-12 20:26:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:20,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:26:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:26:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:20,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-12 20:26:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:20,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:20,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-12 20:26:20,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:21,138 INFO L124 PetriNetUnfolderBase]: 2309/4808 cut-off events. [2024-11-12 20:26:21,138 INFO L125 PetriNetUnfolderBase]: For 919/1071 co-relation queries the response was YES. [2024-11-12 20:26:21,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9585 conditions, 4808 events. 2309/4808 cut-off events. For 919/1071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 31255 event pairs, 444 based on Foata normal form. 22/4298 useless extension candidates. Maximal degree in co-relation 9578. Up to 2448 conditions per place. [2024-11-12 20:26:21,165 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 135 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2024-11-12 20:26:21,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 783 flow [2024-11-12 20:26:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:26:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:26:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 379 transitions. [2024-11-12 20:26:21,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4896640826873385 [2024-11-12 20:26:21,167 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 196 flow. Second operand 9 states and 379 transitions. [2024-11-12 20:26:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 783 flow [2024-11-12 20:26:21,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 169 transitions, 773 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:26:21,172 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 223 flow [2024-11-12 20:26:21,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-12 20:26:21,173 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-11-12 20:26:21,173 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 223 flow [2024-11-12 20:26:21,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:21,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:21,174 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:21,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:26:21,174 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:21,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -227494426, now seen corresponding path program 1 times [2024-11-12 20:26:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979028078] [2024-11-12 20:26:21,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:21,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979028078] [2024-11-12 20:26:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979028078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562822480] [2024-11-12 20:26:21,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:21,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:21,251 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) [2024-11-12 20:26:21,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:26:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:21,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:26:21,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:21,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:26:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562822480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:26:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-12 20:26:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836393923] [2024-11-12 20:26:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:21,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:26:21,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-12 20:26:21,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:21,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:21,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-12 20:26:21,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:21,933 INFO L124 PetriNetUnfolderBase]: 2140/4297 cut-off events. [2024-11-12 20:26:21,939 INFO L125 PetriNetUnfolderBase]: For 819/903 co-relation queries the response was YES. [2024-11-12 20:26:21,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9002 conditions, 4297 events. 2140/4297 cut-off events. For 819/903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 26972 event pairs, 111 based on Foata normal form. 83/4006 useless extension candidates. Maximal degree in co-relation 8993. Up to 2115 conditions per place. [2024-11-12 20:26:21,960 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 106 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-11-12 20:26:21,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 613 flow [2024-11-12 20:26:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-12 20:26:21,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-12 20:26:21,962 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 223 flow. Second operand 4 states and 233 transitions. [2024-11-12 20:26:21,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 613 flow [2024-11-12 20:26:21,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:26:21,967 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 221 flow [2024-11-12 20:26:21,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-11-12 20:26:21,968 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-12 20:26:21,968 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 221 flow [2024-11-12 20:26:21,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:21,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:21,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:21,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:26:22,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:22,171 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:22,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1328529243, now seen corresponding path program 1 times [2024-11-12 20:26:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223361963] [2024-11-12 20:26:22,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:23,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223361963] [2024-11-12 20:26:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223361963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:23,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:23,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:26:23,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878516679] [2024-11-12 20:26:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:23,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:26:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:26:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:26:23,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-12 20:26:23,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 221 flow. Second operand has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:23,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-12 20:26:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:23,801 INFO L124 PetriNetUnfolderBase]: 2277/4743 cut-off events. [2024-11-12 20:26:23,801 INFO L125 PetriNetUnfolderBase]: For 2375/2447 co-relation queries the response was YES. [2024-11-12 20:26:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 4743 events. 2277/4743 cut-off events. For 2375/2447 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30858 event pairs, 444 based on Foata normal form. 22/4311 useless extension candidates. Maximal degree in co-relation 10218. Up to 2448 conditions per place. [2024-11-12 20:26:23,827 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-12 20:26:23,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 866 flow [2024-11-12 20:26:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:26:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:26:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-12 20:26:23,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-12 20:26:23,829 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 221 flow. Second operand 9 states and 378 transitions. [2024-11-12 20:26:23,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 866 flow [2024-11-12 20:26:23,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 783 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:26:23,834 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 220 flow [2024-11-12 20:26:23,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-12 20:26:23,835 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-12 20:26:23,835 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 220 flow [2024-11-12 20:26:23,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:23,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:23,836 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:23,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:26:23,836 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:23,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1537608300, now seen corresponding path program 1 times [2024-11-12 20:26:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051218773] [2024-11-12 20:26:23,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:26:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051218773] [2024-11-12 20:26:23,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051218773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:23,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:23,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920695731] [2024-11-12 20:26:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:23,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:23,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-12 20:26:23,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:23,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-12 20:26:23,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:24,352 INFO L124 PetriNetUnfolderBase]: 1995/4219 cut-off events. [2024-11-12 20:26:24,352 INFO L125 PetriNetUnfolderBase]: For 1058/1102 co-relation queries the response was YES. [2024-11-12 20:26:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8656 conditions, 4219 events. 1995/4219 cut-off events. For 1058/1102 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27245 event pairs, 349 based on Foata normal form. 0/3904 useless extension candidates. Maximal degree in co-relation 8646. Up to 1995 conditions per place. [2024-11-12 20:26:24,371 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 99 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-12 20:26:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 620 flow [2024-11-12 20:26:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-12 20:26:24,377 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-12 20:26:24,377 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 220 flow. Second operand 4 states and 233 transitions. [2024-11-12 20:26:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 620 flow [2024-11-12 20:26:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 586 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:26:24,388 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 220 flow [2024-11-12 20:26:24,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-12 20:26:24,389 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-11-12 20:26:24,389 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 220 flow [2024-11-12 20:26:24,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:24,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:24,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:24,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:26:24,390 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:24,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1765297320, now seen corresponding path program 1 times [2024-11-12 20:26:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109516008] [2024-11-12 20:26:24,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109516008] [2024-11-12 20:26:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109516008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940056746] [2024-11-12 20:26:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:24,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:24,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:24,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:24,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:24,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:24,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:25,082 INFO L124 PetriNetUnfolderBase]: 2829/5823 cut-off events. [2024-11-12 20:26:25,083 INFO L125 PetriNetUnfolderBase]: For 3581/3591 co-relation queries the response was YES. [2024-11-12 20:26:25,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 5823 events. 2829/5823 cut-off events. For 3581/3591 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39862 event pairs, 1541 based on Foata normal form. 144/5581 useless extension candidates. Maximal degree in co-relation 12835. Up to 3624 conditions per place. [2024-11-12 20:26:25,112 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 93 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-12 20:26:25,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 578 flow [2024-11-12 20:26:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-12 20:26:25,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2024-11-12 20:26:25,114 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 220 flow. Second operand 4 states and 220 transitions. [2024-11-12 20:26:25,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 578 flow [2024-11-12 20:26:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:25,119 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 240 flow [2024-11-12 20:26:25,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-11-12 20:26:25,120 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-11-12 20:26:25,120 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 240 flow [2024-11-12 20:26:25,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:25,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:25,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:25,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:26:25,121 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:25,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:25,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1111343872, now seen corresponding path program 1 times [2024-11-12 20:26:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:25,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655013330] [2024-11-12 20:26:25,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:25,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:25,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655013330] [2024-11-12 20:26:25,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655013330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:25,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:26:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521561778] [2024-11-12 20:26:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:25,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:26:25,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:26:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:25,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-12 20:26:25,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:25,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-12 20:26:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:26,518 INFO L124 PetriNetUnfolderBase]: 2968/6043 cut-off events. [2024-11-12 20:26:26,518 INFO L125 PetriNetUnfolderBase]: For 2654/2720 co-relation queries the response was YES. [2024-11-12 20:26:26,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13780 conditions, 6043 events. 2968/6043 cut-off events. For 2654/2720 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41279 event pairs, 480 based on Foata normal form. 0/5609 useless extension candidates. Maximal degree in co-relation 13766. Up to 2392 conditions per place. [2024-11-12 20:26:26,552 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 151 selfloop transitions, 14 changer transitions 2/192 dead transitions. [2024-11-12 20:26:26,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 192 transitions, 1000 flow [2024-11-12 20:26:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:26:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:26:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2024-11-12 20:26:26,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-11-12 20:26:26,555 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 240 flow. Second operand 10 states and 445 transitions. [2024-11-12 20:26:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 192 transitions, 1000 flow [2024-11-12 20:26:26,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 192 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:26,563 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 310 flow [2024-11-12 20:26:26,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-11-12 20:26:26,566 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-11-12 20:26:26,566 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 310 flow [2024-11-12 20:26:26,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:26,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:26,567 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:26,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:26:26,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:26,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 91922555, now seen corresponding path program 1 times [2024-11-12 20:26:26,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083533970] [2024-11-12 20:26:26,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083533970] [2024-11-12 20:26:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083533970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:26,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:26:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075588853] [2024-11-12 20:26:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:26,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:26:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:26:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:26,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:26,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:26,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:26,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:26,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:27,825 INFO L124 PetriNetUnfolderBase]: 2853/5974 cut-off events. [2024-11-12 20:26:27,825 INFO L125 PetriNetUnfolderBase]: For 3458/3524 co-relation queries the response was YES. [2024-11-12 20:26:27,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 5974 events. 2853/5974 cut-off events. For 3458/3524 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41519 event pairs, 530 based on Foata normal form. 44/5852 useless extension candidates. Maximal degree in co-relation 14706. Up to 2881 conditions per place. [2024-11-12 20:26:27,860 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 134 selfloop transitions, 13 changer transitions 2/177 dead transitions. [2024-11-12 20:26:27,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 177 transitions, 975 flow [2024-11-12 20:26:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:26:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:26:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 414 transitions. [2024-11-12 20:26:27,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-12 20:26:27,862 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 310 flow. Second operand 9 states and 414 transitions. [2024-11-12 20:26:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 177 transitions, 975 flow [2024-11-12 20:26:27,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 177 transitions, 965 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:26:27,873 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 360 flow [2024-11-12 20:26:27,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-12 20:26:27,874 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2024-11-12 20:26:27,875 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 360 flow [2024-11-12 20:26:27,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:27,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:27,875 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:27,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:26:27,875 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:27,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -945129074, now seen corresponding path program 1 times [2024-11-12 20:26:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:27,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709738272] [2024-11-12 20:26:27,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:27,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709738272] [2024-11-12 20:26:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709738272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449749487] [2024-11-12 20:26:27,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:27,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:27,970 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) [2024-11-12 20:26:27,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:26:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:28,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:26:28,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:28,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:26:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449749487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:28,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:26:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-12 20:26:28,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780581738] [2024-11-12 20:26:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:28,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:28,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:28,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:26:28,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-12 20:26:28,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:28,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:28,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-12 20:26:28,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:28,789 INFO L124 PetriNetUnfolderBase]: 3142/6194 cut-off events. [2024-11-12 20:26:28,789 INFO L125 PetriNetUnfolderBase]: For 4559/4593 co-relation queries the response was YES. [2024-11-12 20:26:28,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16186 conditions, 6194 events. 3142/6194 cut-off events. For 4559/4593 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41142 event pairs, 692 based on Foata normal form. 150/6090 useless extension candidates. Maximal degree in co-relation 16167. Up to 3426 conditions per place. [2024-11-12 20:26:28,819 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 84 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2024-11-12 20:26:28,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 638 flow [2024-11-12 20:26:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-12 20:26:28,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5668604651162791 [2024-11-12 20:26:28,820 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 360 flow. Second operand 4 states and 195 transitions. [2024-11-12 20:26:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 638 flow [2024-11-12 20:26:28,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 618 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 20:26:28,834 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 342 flow [2024-11-12 20:26:28,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-11-12 20:26:28,835 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-12 20:26:28,835 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 342 flow [2024-11-12 20:26:28,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:28,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:28,836 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:28,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:26:29,036 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,SelfDestructingSolverStorable13 [2024-11-12 20:26:29,037 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:29,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash 765770664, now seen corresponding path program 1 times [2024-11-12 20:26:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598854848] [2024-11-12 20:26:29,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:26:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598854848] [2024-11-12 20:26:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598854848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:29,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:29,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379205457] [2024-11-12 20:26:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:29,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:29,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:29,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-12 20:26:29,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:29,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:29,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-12 20:26:29,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:29,614 INFO L124 PetriNetUnfolderBase]: 2784/5702 cut-off events. [2024-11-12 20:26:29,614 INFO L125 PetriNetUnfolderBase]: For 4398/4418 co-relation queries the response was YES. [2024-11-12 20:26:29,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 5702 events. 2784/5702 cut-off events. For 4398/4418 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 38279 event pairs, 748 based on Foata normal form. 150/5708 useless extension candidates. Maximal degree in co-relation 14780. Up to 2901 conditions per place. [2024-11-12 20:26:29,641 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 88 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-12 20:26:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 652 flow [2024-11-12 20:26:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-12 20:26:29,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-12 20:26:29,642 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 342 flow. Second operand 4 states and 200 transitions. [2024-11-12 20:26:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 652 flow [2024-11-12 20:26:29,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 642 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:29,653 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 344 flow [2024-11-12 20:26:29,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-11-12 20:26:29,654 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2024-11-12 20:26:29,654 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 344 flow [2024-11-12 20:26:29,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:29,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:29,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:29,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:26:29,655 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:29,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 915903152, now seen corresponding path program 1 times [2024-11-12 20:26:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:29,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791079989] [2024-11-12 20:26:29,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:29,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791079989] [2024-11-12 20:26:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791079989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:29,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:29,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822345638] [2024-11-12 20:26:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:29,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:26:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:26:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:26:29,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-12 20:26:29,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:29,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:29,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-12 20:26:29,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:30,189 INFO L124 PetriNetUnfolderBase]: 1726/3932 cut-off events. [2024-11-12 20:26:30,190 INFO L125 PetriNetUnfolderBase]: For 4074/4074 co-relation queries the response was YES. [2024-11-12 20:26:30,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 3932 events. 1726/3932 cut-off events. For 4074/4074 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25710 event pairs, 514 based on Foata normal form. 166/4020 useless extension candidates. Maximal degree in co-relation 10463. Up to 1934 conditions per place. [2024-11-12 20:26:30,212 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 64 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-12 20:26:30,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 532 flow [2024-11-12 20:26:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:26:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:26:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-12 20:26:30,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-12 20:26:30,214 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 344 flow. Second operand 3 states and 166 transitions. [2024-11-12 20:26:30,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 532 flow [2024-11-12 20:26:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 506 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:30,228 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 301 flow [2024-11-12 20:26:30,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-12 20:26:30,228 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-12 20:26:30,229 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 301 flow [2024-11-12 20:26:30,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:30,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:30,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:30,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:26:30,230 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1403479541, now seen corresponding path program 1 times [2024-11-12 20:26:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602472241] [2024-11-12 20:26:30,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602472241] [2024-11-12 20:26:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602472241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:30,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:30,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:26:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040973937] [2024-11-12 20:26:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:30,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:26:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:26:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:30,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:30,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:30,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:30,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:30,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:31,330 INFO L124 PetriNetUnfolderBase]: 1760/3873 cut-off events. [2024-11-12 20:26:31,331 INFO L125 PetriNetUnfolderBase]: For 3494/3496 co-relation queries the response was YES. [2024-11-12 20:26:31,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3873 events. 1760/3873 cut-off events. For 3494/3496 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24368 event pairs, 300 based on Foata normal form. 36/3817 useless extension candidates. Maximal degree in co-relation 10378. Up to 1708 conditions per place. [2024-11-12 20:26:31,348 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 116 selfloop transitions, 11 changer transitions 2/154 dead transitions. [2024-11-12 20:26:31,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 888 flow [2024-11-12 20:26:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:26:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:26:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 397 transitions. [2024-11-12 20:26:31,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5129198966408268 [2024-11-12 20:26:31,350 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 301 flow. Second operand 9 states and 397 transitions. [2024-11-12 20:26:31,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 888 flow [2024-11-12 20:26:31,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:31,358 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 313 flow [2024-11-12 20:26:31,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=313, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2024-11-12 20:26:31,359 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 27 predicate places. [2024-11-12 20:26:31,359 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 313 flow [2024-11-12 20:26:31,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:31,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:31,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:31,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:26:31,360 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:31,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1224215603, now seen corresponding path program 1 times [2024-11-12 20:26:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:31,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481050524] [2024-11-12 20:26:31,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481050524] [2024-11-12 20:26:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481050524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:32,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:32,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 20:26:32,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630300584] [2024-11-12 20:26:32,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:32,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:26:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:26:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:26:32,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-12 20:26:32,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 313 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:32,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:32,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-12 20:26:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:33,604 INFO L124 PetriNetUnfolderBase]: 2182/4649 cut-off events. [2024-11-12 20:26:33,604 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-11-12 20:26:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 4649 events. 2182/4649 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 29404 event pairs, 229 based on Foata normal form. 26/4561 useless extension candidates. Maximal degree in co-relation 12534. Up to 1680 conditions per place. [2024-11-12 20:26:33,628 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 164 selfloop transitions, 13 changer transitions 2/200 dead transitions. [2024-11-12 20:26:33,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 1192 flow [2024-11-12 20:26:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:26:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:26:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-12 20:26:33,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-12 20:26:33,630 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 313 flow. Second operand 13 states and 488 transitions. [2024-11-12 20:26:33,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 1192 flow [2024-11-12 20:26:33,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 1176 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:26:33,641 INFO L231 Difference]: Finished difference. Result has 115 places, 84 transitions, 365 flow [2024-11-12 20:26:33,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=365, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2024-11-12 20:26:33,642 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-11-12 20:26:33,642 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 365 flow [2024-11-12 20:26:33,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:33,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:33,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:33,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:26:33,643 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:33,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1465375294, now seen corresponding path program 1 times [2024-11-12 20:26:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:33,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335211514] [2024-11-12 20:26:33,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:33,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335211514] [2024-11-12 20:26:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335211514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875953662] [2024-11-12 20:26:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:33,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:26:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:26:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:26:33,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-12 20:26:33,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:33,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:33,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-12 20:26:33,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:34,189 INFO L124 PetriNetUnfolderBase]: 1680/3808 cut-off events. [2024-11-12 20:26:34,190 INFO L125 PetriNetUnfolderBase]: For 4493/4500 co-relation queries the response was YES. [2024-11-12 20:26:34,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 3808 events. 1680/3808 cut-off events. For 4493/4500 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 23501 event pairs, 1011 based on Foata normal form. 30/3752 useless extension candidates. Maximal degree in co-relation 10308. Up to 1855 conditions per place. [2024-11-12 20:26:34,211 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 71 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-12 20:26:34,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 580 flow [2024-11-12 20:26:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:26:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:26:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-12 20:26:34,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-12 20:26:34,212 INFO L175 Difference]: Start difference. First operand has 115 places, 84 transitions, 365 flow. Second operand 3 states and 166 transitions. [2024-11-12 20:26:34,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 580 flow [2024-11-12 20:26:34,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 561 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-12 20:26:34,223 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 342 flow [2024-11-12 20:26:34,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2024-11-12 20:26:34,223 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-11-12 20:26:34,223 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 342 flow [2024-11-12 20:26:34,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:34,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:34,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:34,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:26:34,224 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:34,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 748720363, now seen corresponding path program 1 times [2024-11-12 20:26:34,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335562265] [2024-11-12 20:26:34,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:35,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:35,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335562265] [2024-11-12 20:26:35,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335562265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 20:26:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774875904] [2024-11-12 20:26:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:35,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:26:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:26:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:26:35,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-12 20:26:35,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 342 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:35,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:35,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-12 20:26:35,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:36,099 INFO L124 PetriNetUnfolderBase]: 2033/4378 cut-off events. [2024-11-12 20:26:36,099 INFO L125 PetriNetUnfolderBase]: For 4547/4547 co-relation queries the response was YES. [2024-11-12 20:26:36,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11893 conditions, 4378 events. 2033/4378 cut-off events. For 4547/4547 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26864 event pairs, 285 based on Foata normal form. 26/4310 useless extension candidates. Maximal degree in co-relation 11867. Up to 1061 conditions per place. [2024-11-12 20:26:36,121 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 154 selfloop transitions, 14 changer transitions 10/199 dead transitions. [2024-11-12 20:26:36,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 1206 flow [2024-11-12 20:26:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:26:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:26:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-12 20:26:36,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-12 20:26:36,123 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 342 flow. Second operand 13 states and 488 transitions. [2024-11-12 20:26:36,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 1206 flow [2024-11-12 20:26:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 199 transitions, 1195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:36,139 INFO L231 Difference]: Finished difference. Result has 120 places, 83 transitions, 378 flow [2024-11-12 20:26:36,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=378, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2024-11-12 20:26:36,140 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2024-11-12 20:26:36,140 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 378 flow [2024-11-12 20:26:36,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:36,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:36,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:36,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 20:26:36,141 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:36,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2040620382, now seen corresponding path program 1 times [2024-11-12 20:26:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:36,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999776467] [2024-11-12 20:26:36,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:36,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:37,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999776467] [2024-11-12 20:26:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999776467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:26:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447638534] [2024-11-12 20:26:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:37,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:26:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:26:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:26:37,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-12 20:26:37,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:37,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:37,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-12 20:26:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:37,754 INFO L124 PetriNetUnfolderBase]: 2012/4292 cut-off events. [2024-11-12 20:26:37,754 INFO L125 PetriNetUnfolderBase]: For 5135/5142 co-relation queries the response was YES. [2024-11-12 20:26:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 4292 events. 2012/4292 cut-off events. For 5135/5142 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25908 event pairs, 280 based on Foata normal form. 52/4287 useless extension candidates. Maximal degree in co-relation 11972. Up to 1301 conditions per place. [2024-11-12 20:26:37,796 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 138 selfloop transitions, 13 changer transitions 16/190 dead transitions. [2024-11-12 20:26:37,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 190 transitions, 1173 flow [2024-11-12 20:26:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:26:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:26:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-12 20:26:37,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48352713178294576 [2024-11-12 20:26:37,802 INFO L175 Difference]: Start difference. First operand has 120 places, 83 transitions, 378 flow. Second operand 12 states and 499 transitions. [2024-11-12 20:26:37,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 190 transitions, 1173 flow [2024-11-12 20:26:37,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1153 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-12 20:26:37,832 INFO L231 Difference]: Finished difference. Result has 125 places, 86 transitions, 409 flow [2024-11-12 20:26:37,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=409, PETRI_PLACES=125, PETRI_TRANSITIONS=86} [2024-11-12 20:26:37,833 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2024-11-12 20:26:37,833 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 86 transitions, 409 flow [2024-11-12 20:26:37,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:37,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:37,834 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:37,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 20:26:37,834 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:37,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 138726922, now seen corresponding path program 1 times [2024-11-12 20:26:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:37,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010395696] [2024-11-12 20:26:37,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010395696] [2024-11-12 20:26:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010395696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:39,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 20:26:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334734509] [2024-11-12 20:26:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:39,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:26:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:26:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:26:39,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:39,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 86 transitions, 409 flow. Second operand has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:39,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:39,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:39,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:39,893 INFO L124 PetriNetUnfolderBase]: 1737/3788 cut-off events. [2024-11-12 20:26:39,894 INFO L125 PetriNetUnfolderBase]: For 4932/4939 co-relation queries the response was YES. [2024-11-12 20:26:39,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10834 conditions, 3788 events. 1737/3788 cut-off events. For 4932/4939 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 22164 event pairs, 258 based on Foata normal form. 26/3785 useless extension candidates. Maximal degree in co-relation 10803. Up to 926 conditions per place. [2024-11-12 20:26:39,918 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 137 selfloop transitions, 13 changer transitions 15/190 dead transitions. [2024-11-12 20:26:39,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 190 transitions, 1187 flow [2024-11-12 20:26:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:26:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:26:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 520 transitions. [2024-11-12 20:26:39,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2024-11-12 20:26:39,920 INFO L175 Difference]: Start difference. First operand has 125 places, 86 transitions, 409 flow. Second operand 12 states and 520 transitions. [2024-11-12 20:26:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 190 transitions, 1187 flow [2024-11-12 20:26:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 1165 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-12 20:26:39,937 INFO L231 Difference]: Finished difference. Result has 127 places, 84 transitions, 399 flow [2024-11-12 20:26:39,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=399, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2024-11-12 20:26:39,937 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 49 predicate places. [2024-11-12 20:26:39,937 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 399 flow [2024-11-12 20:26:39,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:39,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:39,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:39,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 20:26:39,939 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:39,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1734137174, now seen corresponding path program 1 times [2024-11-12 20:26:39,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:39,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008710278] [2024-11-12 20:26:39,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008710278] [2024-11-12 20:26:40,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008710278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:40,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:40,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:26:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279113449] [2024-11-12 20:26:40,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:40,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:26:40,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:26:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:26:40,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:26:40,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:40,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:40,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:26:40,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:40,852 INFO L124 PetriNetUnfolderBase]: 1939/4200 cut-off events. [2024-11-12 20:26:40,852 INFO L125 PetriNetUnfolderBase]: For 5131/5131 co-relation queries the response was YES. [2024-11-12 20:26:40,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 4200 events. 1939/4200 cut-off events. For 5131/5131 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 25123 event pairs, 431 based on Foata normal form. 12/4183 useless extension candidates. Maximal degree in co-relation 11937. Up to 1823 conditions per place. [2024-11-12 20:26:40,874 INFO L140 encePairwiseOnDemand]: 74/86 looper letters, 104 selfloop transitions, 17 changer transitions 0/143 dead transitions. [2024-11-12 20:26:40,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 143 transitions, 894 flow [2024-11-12 20:26:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:26:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:26:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 332 transitions. [2024-11-12 20:26:40,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-11-12 20:26:40,876 INFO L175 Difference]: Start difference. First operand has 127 places, 84 transitions, 399 flow. Second operand 8 states and 332 transitions. [2024-11-12 20:26:40,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 143 transitions, 894 flow [2024-11-12 20:26:40,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 866 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-12 20:26:40,890 INFO L231 Difference]: Finished difference. Result has 120 places, 86 transitions, 411 flow [2024-11-12 20:26:40,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=411, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2024-11-12 20:26:40,891 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2024-11-12 20:26:40,891 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 411 flow [2024-11-12 20:26:40,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:40,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:40,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:40,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 20:26:40,892 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:40,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1136864050, now seen corresponding path program 1 times [2024-11-12 20:26:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030627831] [2024-11-12 20:26:40,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:40,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030627831] [2024-11-12 20:26:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030627831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:42,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:42,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 20:26:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276146925] [2024-11-12 20:26:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:42,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:26:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:26:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:26:42,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-12 20:26:42,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 86 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 28.642857142857142) internal successors, (401), 14 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:42,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:42,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-12 20:26:42,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:43,136 INFO L124 PetriNetUnfolderBase]: 2050/4434 cut-off events. [2024-11-12 20:26:43,136 INFO L125 PetriNetUnfolderBase]: For 5252/5252 co-relation queries the response was YES. [2024-11-12 20:26:43,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12438 conditions, 4434 events. 2050/4434 cut-off events. For 5252/5252 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26072 event pairs, 244 based on Foata normal form. 12/4411 useless extension candidates. Maximal degree in co-relation 12408. Up to 1029 conditions per place. [2024-11-12 20:26:43,160 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 162 selfloop transitions, 14 changer transitions 16/214 dead transitions. [2024-11-12 20:26:43,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 214 transitions, 1360 flow [2024-11-12 20:26:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:26:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:26:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 522 transitions. [2024-11-12 20:26:43,162 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4335548172757475 [2024-11-12 20:26:43,162 INFO L175 Difference]: Start difference. First operand has 120 places, 86 transitions, 411 flow. Second operand 14 states and 522 transitions. [2024-11-12 20:26:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 214 transitions, 1360 flow [2024-11-12 20:26:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 214 transitions, 1336 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:43,174 INFO L231 Difference]: Finished difference. Result has 133 places, 88 transitions, 443 flow [2024-11-12 20:26:43,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=443, PETRI_PLACES=133, PETRI_TRANSITIONS=88} [2024-11-12 20:26:43,174 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-11-12 20:26:43,174 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 88 transitions, 443 flow [2024-11-12 20:26:43,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.642857142857142) internal successors, (401), 14 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:43,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:43,175 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:43,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:26:43,175 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:43,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1071354397, now seen corresponding path program 1 times [2024-11-12 20:26:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:43,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789333324] [2024-11-12 20:26:43,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:44,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789333324] [2024-11-12 20:26:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789333324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 20:26:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880961855] [2024-11-12 20:26:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:26:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:26:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:26:44,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:44,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 88 transitions, 443 flow. Second operand has 12 states, 12 states have (on average 35.25) internal successors, (423), 12 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:44,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:44,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:44,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:45,370 INFO L124 PetriNetUnfolderBase]: 2036/4444 cut-off events. [2024-11-12 20:26:45,370 INFO L125 PetriNetUnfolderBase]: For 5775/5776 co-relation queries the response was YES. [2024-11-12 20:26:45,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12660 conditions, 4444 events. 2036/4444 cut-off events. For 5775/5776 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26147 event pairs, 315 based on Foata normal form. 12/4421 useless extension candidates. Maximal degree in co-relation 12629. Up to 881 conditions per place. [2024-11-12 20:26:45,406 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 18 changer transitions 11/206 dead transitions. [2024-11-12 20:26:45,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 206 transitions, 1327 flow [2024-11-12 20:26:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:26:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:26:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 599 transitions. [2024-11-12 20:26:45,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49750830564784054 [2024-11-12 20:26:45,409 INFO L175 Difference]: Start difference. First operand has 133 places, 88 transitions, 443 flow. Second operand 14 states and 599 transitions. [2024-11-12 20:26:45,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 206 transitions, 1327 flow [2024-11-12 20:26:45,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 206 transitions, 1301 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-12 20:26:45,425 INFO L231 Difference]: Finished difference. Result has 138 places, 93 transitions, 507 flow [2024-11-12 20:26:45,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=507, PETRI_PLACES=138, PETRI_TRANSITIONS=93} [2024-11-12 20:26:45,426 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 60 predicate places. [2024-11-12 20:26:45,426 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 93 transitions, 507 flow [2024-11-12 20:26:45,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.25) internal successors, (423), 12 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:45,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:45,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:45,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:26:45,427 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:45,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -401769290, now seen corresponding path program 1 times [2024-11-12 20:26:45,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:45,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452596582] [2024-11-12 20:26:45,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452596582] [2024-11-12 20:26:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452596582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086189070] [2024-11-12 20:26:46,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:46,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:46,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:26:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:26:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:46,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-12 20:26:46,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:46,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2024-11-12 20:26:46,839 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2024-11-12 20:26:46,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 29 [2024-11-12 20:26:46,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:46,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-12 20:26:47,066 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2024-11-12 20:26:47,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 29 [2024-11-12 20:26:47,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:47,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-12 20:26:47,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:47,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:47,418 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2024-11-12 20:26:47,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 29 [2024-11-12 20:26:47,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:47,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:26:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:47,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:48,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086189070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:48,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:48,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 34 [2024-11-12 20:26:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210391596] [2024-11-12 20:26:48,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:48,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-12 20:26:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-12 20:26:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2024-11-12 20:26:48,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:48,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 93 transitions, 507 flow. Second operand has 36 states, 36 states have (on average 35.22222222222222) internal successors, (1268), 36 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:48,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:48,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:48,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:52,883 INFO L124 PetriNetUnfolderBase]: 3520/7827 cut-off events. [2024-11-12 20:26:52,883 INFO L125 PetriNetUnfolderBase]: For 9723/9734 co-relation queries the response was YES. [2024-11-12 20:26:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21862 conditions, 7827 events. 3520/7827 cut-off events. For 9723/9734 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 47229 event pairs, 649 based on Foata normal form. 68/7803 useless extension candidates. Maximal degree in co-relation 21829. Up to 1189 conditions per place. [2024-11-12 20:26:52,929 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 305 selfloop transitions, 60 changer transitions 8/398 dead transitions. [2024-11-12 20:26:52,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 398 transitions, 2675 flow [2024-11-12 20:26:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-12 20:26:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-12 20:26:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1482 transitions. [2024-11-12 20:26:52,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4786821705426357 [2024-11-12 20:26:52,933 INFO L175 Difference]: Start difference. First operand has 138 places, 93 transitions, 507 flow. Second operand 36 states and 1482 transitions. [2024-11-12 20:26:52,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 398 transitions, 2675 flow [2024-11-12 20:26:52,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 398 transitions, 2639 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-11-12 20:26:52,960 INFO L231 Difference]: Finished difference. Result has 170 places, 133 transitions, 966 flow [2024-11-12 20:26:52,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=966, PETRI_PLACES=170, PETRI_TRANSITIONS=133} [2024-11-12 20:26:52,960 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2024-11-12 20:26:52,961 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 133 transitions, 966 flow [2024-11-12 20:26:52,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 35.22222222222222) internal successors, (1268), 36 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:52,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:52,961 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:52,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:26:53,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:53,162 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:53,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -742605907, now seen corresponding path program 1 times [2024-11-12 20:26:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940205083] [2024-11-12 20:26:53,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940205083] [2024-11-12 20:26:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940205083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:54,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582690217] [2024-11-12 20:26:54,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:54,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:54,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:54,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:26:54,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:26:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:54,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-12 20:26:54,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:54,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-12 20:26:54,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 20:26:54,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 20:26:54,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:26:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:54,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582690217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:55,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 34 [2024-11-12 20:26:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717880041] [2024-11-12 20:26:55,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:55,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:26:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:26:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:26:55,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-12 20:26:55,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 133 transitions, 966 flow. Second operand has 35 states, 35 states have (on average 35.457142857142856) internal successors, (1241), 35 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:55,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:55,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-12 20:26:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:57,944 INFO L124 PetriNetUnfolderBase]: 2847/6310 cut-off events. [2024-11-12 20:26:57,944 INFO L125 PetriNetUnfolderBase]: For 9363/9373 co-relation queries the response was YES. [2024-11-12 20:26:57,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18272 conditions, 6310 events. 2847/6310 cut-off events. For 9363/9373 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 34553 event pairs, 628 based on Foata normal form. 28/6268 useless extension candidates. Maximal degree in co-relation 18231. Up to 1192 conditions per place. [2024-11-12 20:26:58,078 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 242 selfloop transitions, 35 changer transitions 17/319 dead transitions. [2024-11-12 20:26:58,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 319 transitions, 2217 flow [2024-11-12 20:26:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 20:26:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 20:26:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1117 transitions. [2024-11-12 20:26:58,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4810508182601206 [2024-11-12 20:26:58,080 INFO L175 Difference]: Start difference. First operand has 170 places, 133 transitions, 966 flow. Second operand 27 states and 1117 transitions. [2024-11-12 20:26:58,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 319 transitions, 2217 flow [2024-11-12 20:26:58,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 319 transitions, 2085 flow, removed 38 selfloop flow, removed 23 redundant places. [2024-11-12 20:26:58,099 INFO L231 Difference]: Finished difference. Result has 172 places, 113 transitions, 689 flow [2024-11-12 20:26:58,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=689, PETRI_PLACES=172, PETRI_TRANSITIONS=113} [2024-11-12 20:26:58,099 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 94 predicate places. [2024-11-12 20:26:58,099 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 113 transitions, 689 flow [2024-11-12 20:26:58,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 35.457142857142856) internal successors, (1241), 35 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:58,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:58,100 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:58,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 20:26:58,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 20:26:58,301 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:26:58,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:58,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1208368045, now seen corresponding path program 1 times [2024-11-12 20:26:58,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:58,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176703383] [2024-11-12 20:26:58,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:00,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176703383] [2024-11-12 20:27:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176703383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:27:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734947509] [2024-11-12 20:27:00,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:00,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:27:00,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:27:00,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:27:00,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:27:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:00,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-12 20:27:00,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:27:00,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 20:27:00,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-12 20:27:00,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:27:00,727 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-12 20:27:00,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 71 [2024-11-12 20:27:00,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:27:00,912 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 20:27:00,935 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-12 20:27:00,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 74 [2024-11-12 20:27:01,105 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-12 20:27:01,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 63 [2024-11-12 20:27:01,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-12 20:27:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:27:01,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:27:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734947509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:01,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:27:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 25 [2024-11-12 20:27:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046208956] [2024-11-12 20:27:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:01,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:27:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:27:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-12 20:27:01,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-12 20:27:01,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 113 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 35.36363636363637) internal successors, (389), 11 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:01,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:01,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-12 20:27:01,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:01,899 INFO L124 PetriNetUnfolderBase]: 2921/6312 cut-off events. [2024-11-12 20:27:01,900 INFO L125 PetriNetUnfolderBase]: For 8047/8063 co-relation queries the response was YES. [2024-11-12 20:27:01,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17968 conditions, 6312 events. 2921/6312 cut-off events. For 8047/8063 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 34129 event pairs, 1237 based on Foata normal form. 45/6273 useless extension candidates. Maximal degree in co-relation 17936. Up to 2421 conditions per place. [2024-11-12 20:27:01,934 INFO L140 encePairwiseOnDemand]: 74/86 looper letters, 96 selfloop transitions, 37 changer transitions 1/160 dead transitions. [2024-11-12 20:27:01,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 160 transitions, 1162 flow [2024-11-12 20:27:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:27:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:27:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 331 transitions. [2024-11-12 20:27:01,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4811046511627907 [2024-11-12 20:27:01,935 INFO L175 Difference]: Start difference. First operand has 172 places, 113 transitions, 689 flow. Second operand 8 states and 331 transitions. [2024-11-12 20:27:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 160 transitions, 1162 flow [2024-11-12 20:27:01,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 160 transitions, 1084 flow, removed 1 selfloop flow, removed 26 redundant places. [2024-11-12 20:27:01,954 INFO L231 Difference]: Finished difference. Result has 151 places, 112 transitions, 679 flow [2024-11-12 20:27:01,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=679, PETRI_PLACES=151, PETRI_TRANSITIONS=112} [2024-11-12 20:27:01,955 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 73 predicate places. [2024-11-12 20:27:01,955 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 112 transitions, 679 flow [2024-11-12 20:27:01,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.36363636363637) internal successors, (389), 11 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:01,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:01,956 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:01,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:27:02,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 20:27:02,157 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:27:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash 93944151, now seen corresponding path program 1 times [2024-11-12 20:27:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133344763] [2024-11-12 20:27:02,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:27:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133344763] [2024-11-12 20:27:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133344763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:27:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220804241] [2024-11-12 20:27:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:02,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:27:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:27:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:27:02,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-12 20:27:02,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 112 transitions, 679 flow. Second operand has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:02,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:02,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-12 20:27:02,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:03,240 INFO L124 PetriNetUnfolderBase]: 2762/6246 cut-off events. [2024-11-12 20:27:03,240 INFO L125 PetriNetUnfolderBase]: For 8262/8262 co-relation queries the response was YES. [2024-11-12 20:27:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 6246 events. 2762/6246 cut-off events. For 8262/8262 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 34447 event pairs, 1622 based on Foata normal form. 45/6219 useless extension candidates. Maximal degree in co-relation 17444. Up to 3140 conditions per place. [2024-11-12 20:27:03,278 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 79 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-11-12 20:27:03,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 989 flow [2024-11-12 20:27:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:27:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:27:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2024-11-12 20:27:03,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-11-12 20:27:03,279 INFO L175 Difference]: Start difference. First operand has 151 places, 112 transitions, 679 flow. Second operand 6 states and 264 transitions. [2024-11-12 20:27:03,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 134 transitions, 989 flow [2024-11-12 20:27:03,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 921 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-12 20:27:03,300 INFO L231 Difference]: Finished difference. Result has 146 places, 111 transitions, 661 flow [2024-11-12 20:27:03,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=146, PETRI_TRANSITIONS=111} [2024-11-12 20:27:03,302 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 68 predicate places. [2024-11-12 20:27:03,302 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 111 transitions, 661 flow [2024-11-12 20:27:03,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:03,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:03,303 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:03,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 20:27:03,303 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:27:03,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -739622534, now seen corresponding path program 1 times [2024-11-12 20:27:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:03,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960876156] [2024-11-12 20:27:03,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:27:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960876156] [2024-11-12 20:27:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960876156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:27:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033587821] [2024-11-12 20:27:04,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:04,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:27:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:27:04,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:27:04,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:27:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:04,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-12 20:27:04,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:27:04,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 20:27:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:27:04,352 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-12 20:27:04,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 58 [2024-11-12 20:27:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:27:04,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:27:04,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-11-12 20:27:04,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:27:04,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2024-11-12 20:27:04,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:27:04,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-12 20:27:04,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:27:04,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 13 [2024-11-12 20:27:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:27:04,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:27:05,115 INFO L349 Elim1Store]: treesize reduction 36, result has 59.6 percent of original size [2024-11-12 20:27:05,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 133 [2024-11-12 20:27:05,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:27:05,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 125 [2024-11-12 20:27:05,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-12 20:27:05,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:27:05,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 148 [2024-11-12 20:27:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:27:05,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033587821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:27:05,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:27:05,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2024-11-12 20:27:05,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238007301] [2024-11-12 20:27:05,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:27:05,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:27:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:27:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:27:05,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2024-11-12 20:27:05,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 111 transitions, 661 flow. Second operand has 28 states, 28 states have (on average 32.642857142857146) internal successors, (914), 28 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:05,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:05,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2024-11-12 20:27:05,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:06,381 INFO L124 PetriNetUnfolderBase]: 3100/6584 cut-off events. [2024-11-12 20:27:06,381 INFO L125 PetriNetUnfolderBase]: For 8549/8549 co-relation queries the response was YES. [2024-11-12 20:27:06,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18683 conditions, 6584 events. 3100/6584 cut-off events. For 8549/8549 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 35150 event pairs, 1622 based on Foata normal form. 36/6548 useless extension candidates. Maximal degree in co-relation 18654. Up to 3176 conditions per place. [2024-11-12 20:27:06,418 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 85 selfloop transitions, 53 changer transitions 0/155 dead transitions. [2024-11-12 20:27:06,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 155 transitions, 1155 flow [2024-11-12 20:27:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:27:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:27:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-11-12 20:27:06,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4316860465116279 [2024-11-12 20:27:06,419 INFO L175 Difference]: Start difference. First operand has 146 places, 111 transitions, 661 flow. Second operand 8 states and 297 transitions. [2024-11-12 20:27:06,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 155 transitions, 1155 flow [2024-11-12 20:27:06,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 155 transitions, 1093 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:27:06,438 INFO L231 Difference]: Finished difference. Result has 147 places, 114 transitions, 741 flow [2024-11-12 20:27:06,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=147, PETRI_TRANSITIONS=114} [2024-11-12 20:27:06,439 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2024-11-12 20:27:06,439 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 114 transitions, 741 flow [2024-11-12 20:27:06,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 32.642857142857146) internal successors, (914), 28 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:27:06,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:06,440 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:06,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:27:06,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:27:06,640 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-12 20:27:06,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1916786323, now seen corresponding path program 1 times [2024-11-12 20:27:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:06,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075203684] [2024-11-12 20:27:06,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:06,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075203684] [2024-11-12 20:27:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075203684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:27:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067352218] [2024-11-12 20:27:08,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:08,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:27:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:27:08,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:27:08,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:27:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:08,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-12 20:27:08,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:27:08,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-11-12 20:27:08,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 20:27:08,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 20:27:08,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-12 20:27:08,601 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-12 20:27:08,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-12 20:27:08,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 20:27:08,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-12 20:27:08,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 20:27:08,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-12 20:27:08,977 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-12 20:27:08,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-12 20:27:09,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-12 20:27:09,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-12 20:27:09,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 20:27:09,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:27:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:09,147 INFO L312 TraceCheckSpWp]: Computing backward predicates...