./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:58:44,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:58:44,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:58:44,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:58:44,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:58:44,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:58:44,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:58:44,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:58:44,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:58:44,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:58:44,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:58:44,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:58:44,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:58:44,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:58:44,169 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:58:44,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:58:44,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:58:44,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:58:44,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:58:44,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:58:44,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:58:44,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:58:44,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:58:44,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:58:44,172 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:58:44,172 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:58:44,172 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:58:44,172 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:58:44,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:58:44,173 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:58:44,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:58:44,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:58:44,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:58:44,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:58:44,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:58:44,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:58:44,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:58:44,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:58:44,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:58:44,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:58:44,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:58:44,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:58:44,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:58:44,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:58:44,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-10-14 23:58:44,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:58:44,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:58:44,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:58:44,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:58:44,369 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:58:44,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-14 23:58:45,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:58:45,957 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:58:45,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-14 23:58:45,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49afabe93/c3cbd3b17a21499eb62e374365319dba/FLAGd033b0808 [2024-10-14 23:58:45,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49afabe93/c3cbd3b17a21499eb62e374365319dba [2024-10-14 23:58:45,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:58:45,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:58:45,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:58:45,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:58:45,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:58:45,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:45" (1/1) ... [2024-10-14 23:58:45,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18392162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:45, skipping insertion in model container [2024-10-14 23:58:46,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:45" (1/1) ... [2024-10-14 23:58:46,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:58:46,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:58:46,222 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:58:46,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:58:46,263 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:58:46,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46 WrapperNode [2024-10-14 23:58:46,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:58:46,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:58:46,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:58:46,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:58:46,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,300 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 356 [2024-10-14 23:58:46,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:58:46,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:58:46,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:58:46,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:58:46,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,358 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 23:58:46,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:58:46,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:58:46,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:58:46,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:58:46,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (1/1) ... [2024-10-14 23:58:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:58:46,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:46,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:58:46,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:58:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:58:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:58:46,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:58:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:58:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:58:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 23:58:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 23:58:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:58:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:58:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:58:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:58:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 23:58:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:58:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:58:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:58:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:58:46,465 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:58:46,581 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:58:46,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:58:47,071 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:58:47,071 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:58:47,328 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:58:47,331 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 23:58:47,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:47 BoogieIcfgContainer [2024-10-14 23:58:47,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:58:47,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:58:47,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:58:47,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:58:47,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:58:45" (1/3) ... [2024-10-14 23:58:47,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa08fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:47, skipping insertion in model container [2024-10-14 23:58:47,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:46" (2/3) ... [2024-10-14 23:58:47,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa08fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:47, skipping insertion in model container [2024-10-14 23:58:47,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:47" (3/3) ... [2024-10-14 23:58:47,344 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-10-14 23:58:47,399 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:58:47,400 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-14 23:58:47,400 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:58:47,449 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:58:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2024-10-14 23:58:47,505 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2024-10-14 23:58:47,505 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:58:47,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 437 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-10-14 23:58:47,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2024-10-14 23:58:47,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2024-10-14 23:58:47,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:58:47,522 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;@56a843b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:58:47,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-14 23:58:47,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:58:47,525 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:58:47,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:58:47,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:47,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:58:47,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:58:47,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1010455, now seen corresponding path program 1 times [2024-10-14 23:58:47,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:47,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568032410] [2024-10-14 23:58:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:47,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568032410] [2024-10-14 23:58:47,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568032410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:47,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:47,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435862658] [2024-10-14 23:58:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:47,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:47,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:47,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:58:47,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:47,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:47,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:58:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:49,859 INFO L124 PetriNetUnfolderBase]: 12357/23532 cut-off events. [2024-10-14 23:58:49,860 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2024-10-14 23:58:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40272 conditions, 23532 events. 12357/23532 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213241 event pairs, 8540 based on Foata normal form. 1/18431 useless extension candidates. Maximal degree in co-relation 38950. Up to 16288 conditions per place. [2024-10-14 23:58:49,985 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 51 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-14 23:58:49,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 333 flow [2024-10-14 23:58:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-10-14 23:58:49,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-10-14 23:58:49,996 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 267 transitions. [2024-10-14 23:58:49,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 333 flow [2024-10-14 23:58:50,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:58:50,004 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 222 flow [2024-10-14 23:58:50,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2024-10-14 23:58:50,008 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-10-14 23:58:50,009 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 222 flow [2024-10-14 23:58:50,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:50,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:50,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:58:50,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:58:50,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:58:50,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 31325149, now seen corresponding path program 1 times [2024-10-14 23:58:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35711689] [2024-10-14 23:58:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35711689] [2024-10-14 23:58:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35711689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:50,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:50,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845965178] [2024-10-14 23:58:50,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:50,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:50,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:50,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:58:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:50,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:50,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:58:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:51,667 INFO L124 PetriNetUnfolderBase]: 12358/23536 cut-off events. [2024-10-14 23:58:51,668 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-10-14 23:58:51,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40126 conditions, 23536 events. 12358/23536 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213194 event pairs, 8540 based on Foata normal form. 1/18435 useless extension candidates. Maximal degree in co-relation 40098. Up to 16293 conditions per place. [2024-10-14 23:58:51,770 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-10-14 23:58:51,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 350 flow [2024-10-14 23:58:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-10-14 23:58:51,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-10-14 23:58:51,778 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 222 flow. Second operand 4 states and 267 transitions. [2024-10-14 23:58:51,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 350 flow [2024-10-14 23:58:51,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:51,789 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 241 flow [2024-10-14 23:58:51,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-14 23:58:51,790 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2024-10-14 23:58:51,790 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 241 flow [2024-10-14 23:58:51,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:51,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:51,791 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:58:51,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:58:51,791 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:58:51,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1200697911, now seen corresponding path program 1 times [2024-10-14 23:58:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668305138] [2024-10-14 23:58:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668305138] [2024-10-14 23:58:51,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668305138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032976787] [2024-10-14 23:58:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:51,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:51,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:58:51,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:58:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:52,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:58:52,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:52,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:58:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032976787] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:58:52,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:58:52,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-14 23:58:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363920616] [2024-10-14 23:58:52,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:58:52,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:58:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:58:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:58:52,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:58:52,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 241 flow. Second operand has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:52,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:52,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:58:52,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:53,646 INFO L124 PetriNetUnfolderBase]: 12361/23548 cut-off events. [2024-10-14 23:58:53,646 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-10-14 23:58:53,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40162 conditions, 23548 events. 12361/23548 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213401 event pairs, 8540 based on Foata normal form. 0/18443 useless extension candidates. Maximal degree in co-relation 40105. Up to 16296 conditions per place. [2024-10-14 23:58:53,927 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2024-10-14 23:58:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 411 flow [2024-10-14 23:58:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:58:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:58:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2024-10-14 23:58:53,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2024-10-14 23:58:53,932 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 241 flow. Second operand 10 states and 590 transitions. [2024-10-14 23:58:53,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 411 flow [2024-10-14 23:58:53,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:58:53,936 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 318 flow [2024-10-14 23:58:53,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=318, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2024-10-14 23:58:53,939 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-10-14 23:58:53,939 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 318 flow [2024-10-14 23:58:53,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:53,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:53,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:53,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:58:54,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:54,142 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:58:54,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1353861537, now seen corresponding path program 1 times [2024-10-14 23:58:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:54,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784204398] [2024-10-14 23:58:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:54,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784204398] [2024-10-14 23:58:54,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784204398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:54,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:54,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153118190] [2024-10-14 23:58:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:54,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:54,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:54,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:58:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:54,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:54,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:58:54,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:57,281 INFO L124 PetriNetUnfolderBase]: 26973/48903 cut-off events. [2024-10-14 23:58:57,282 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-10-14 23:58:57,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85207 conditions, 48903 events. 26973/48903 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 466114 event pairs, 11145 based on Foata normal form. 366/39751 useless extension candidates. Maximal degree in co-relation 85171. Up to 20231 conditions per place. [2024-10-14 23:58:57,702 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 146 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2024-10-14 23:58:57,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 786 flow [2024-10-14 23:58:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2024-10-14 23:58:57,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2024-10-14 23:58:57,704 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 318 flow. Second operand 4 states and 347 transitions. [2024-10-14 23:58:57,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 786 flow [2024-10-14 23:58:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 756 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 23:58:57,710 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 310 flow [2024-10-14 23:58:57,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-10-14 23:58:57,712 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2024-10-14 23:58:57,713 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 310 flow [2024-10-14 23:58:57,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:57,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:57,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:57,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:58:57,714 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:58:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1827894053, now seen corresponding path program 1 times [2024-10-14 23:58:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138871745] [2024-10-14 23:58:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138871745] [2024-10-14 23:58:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138871745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962996934] [2024-10-14 23:58:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:57,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:57,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:57,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:58:57,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:58:57,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:57,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:58:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:03,367 INFO L124 PetriNetUnfolderBase]: 51877/90743 cut-off events. [2024-10-14 23:59:03,367 INFO L125 PetriNetUnfolderBase]: For 6288/7468 co-relation queries the response was YES. [2024-10-14 23:59:03,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164816 conditions, 90743 events. 51877/90743 cut-off events. For 6288/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3617. Compared 899849 event pairs, 21438 based on Foata normal form. 726/75185 useless extension candidates. Maximal degree in co-relation 164782. Up to 38015 conditions per place. [2024-10-14 23:59:04,137 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2024-10-14 23:59:04,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 813 flow [2024-10-14 23:59:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-10-14 23:59:04,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2024-10-14 23:59:04,145 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 310 flow. Second operand 4 states and 344 transitions. [2024-10-14 23:59:04,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 813 flow [2024-10-14 23:59:04,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:59:04,153 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 330 flow [2024-10-14 23:59:04,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-10-14 23:59:04,154 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2024-10-14 23:59:04,154 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 330 flow [2024-10-14 23:59:04,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:04,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:04,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:04,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:59:04,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:04,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1148829827, now seen corresponding path program 1 times [2024-10-14 23:59:04,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:04,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519872986] [2024-10-14 23:59:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:04,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519872986] [2024-10-14 23:59:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519872986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:59:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469335394] [2024-10-14 23:59:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:04,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:04,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:04,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-10-14 23:59:04,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:04,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:04,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-10-14 23:59:04,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand