./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:46:35,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:46:35,280 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:46:35,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:46:35,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:46:35,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:46:35,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:46:35,308 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:46:35,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:46:35,309 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:46:35,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:46:35,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:46:35,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:46:35,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:46:35,313 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:46:35,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:46:35,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:46:35,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:46:35,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:46:35,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:46:35,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:46:35,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:46:35,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:46:35,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:46:35,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:46:35,317 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:46:35,317 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:46:35,317 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:46:35,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:46:35,317 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:46:35,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:46:35,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:46:35,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:46:35,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:46:35,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:35,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:46:35,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:46:35,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:46:35,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:46:35,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:46:35,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:46:35,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:46:35,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:46:35,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:46:35,332 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-10-11 23:46:35,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:46:35,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:46:35,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:46:35,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:46:35,537 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:46:35,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-10-11 23:46:36,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:46:36,972 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:46:36,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-10-11 23:46:36,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dfc8fa890/48efb7d921da44b2baacd6ab4b68a449/FLAG4b27657bb [2024-10-11 23:46:37,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dfc8fa890/48efb7d921da44b2baacd6ab4b68a449 [2024-10-11 23:46:37,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:46:37,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:46:37,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:37,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:46:37,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:46:37,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c83949d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37, skipping insertion in model container [2024-10-11 23:46:37,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:46:37,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:37,747 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:46:37,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:37,824 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:46:37,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37 WrapperNode [2024-10-11 23:46:37,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:37,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:37,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:46:37,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:46:37,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,866 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 158 [2024-10-11 23:46:37,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:37,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:46:37,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:46:37,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:46:37,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,899 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-11 23:46:37,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:46:37,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:46:37,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:46:37,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:46:37,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (1/1) ... [2024-10-11 23:46:37,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:37,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:37,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:46:37,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:46:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 23:46:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 23:46:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 23:46:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 23:46:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:46:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:46:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:46:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:46:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:46:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:46:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:46:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:46:37,985 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:46:38,098 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:46:38,099 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:46:38,269 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:46:38,269 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:46:38,397 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:46:38,398 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:46:38,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:38 BoogieIcfgContainer [2024-10-11 23:46:38,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:46:38,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:46:38,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:46:38,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:46:38,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:46:37" (1/3) ... [2024-10-11 23:46:38,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347a5e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:38, skipping insertion in model container [2024-10-11 23:46:38,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:37" (2/3) ... [2024-10-11 23:46:38,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347a5e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:38, skipping insertion in model container [2024-10-11 23:46:38,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:38" (3/3) ... [2024-10-11 23:46:38,407 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-10-11 23:46:38,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:46:38,419 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:46:38,419 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:46:38,467 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:46:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-11 23:46:38,516 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-11 23:46:38,516 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:46:38,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-11 23:46:38,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-11 23:46:38,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-11 23:46:38,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:46:38,541 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;@7dce2c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:46:38,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 23:46:38,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:46:38,546 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-11 23:46:38,546 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:46:38,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:38,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:38,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:38,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash 27544410, now seen corresponding path program 1 times [2024-10-11 23:46:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069334336] [2024-10-11 23:46:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069334336] [2024-10-11 23:46:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069334336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:38,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:38,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:46:38,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606523655] [2024-10-11 23:46:38,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:38,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:38,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:38,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:38,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:38,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:38,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:39,183 INFO L124 PetriNetUnfolderBase]: 730/1443 cut-off events. [2024-10-11 23:46:39,185 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-11 23:46:39,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1443 events. 730/1443 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7566 event pairs, 224 based on Foata normal form. 40/1335 useless extension candidates. Maximal degree in co-relation 2570. Up to 692 conditions per place. [2024-10-11 23:46:39,195 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-11 23:46:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-10-11 23:46:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-11 23:46:39,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-11 23:46:39,207 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-10-11 23:46:39,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-10-11 23:46:39,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:39,214 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-10-11 23:46:39,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-10-11 23:46:39,220 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-11 23:46:39,221 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-10-11 23:46:39,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:39,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:39,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:39,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:46:39,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:39,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 463532605, now seen corresponding path program 1 times [2024-10-11 23:46:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211269328] [2024-10-11 23:46:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:39,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211269328] [2024-10-11 23:46:39,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211269328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:39,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:39,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:39,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637911041] [2024-10-11 23:46:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:39,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:39,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:39,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-11 23:46:39,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:39,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:39,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:39,596 INFO L124 PetriNetUnfolderBase]: 1180/2392 cut-off events. [2024-10-11 23:46:39,597 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-11 23:46:39,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2392 events. 1180/2392 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13827 event pairs, 613 based on Foata normal form. 74/2303 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-10-11 23:46:39,607 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-10-11 23:46:39,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-10-11 23:46:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-11 23:46:39,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-11 23:46:39,611 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-10-11 23:46:39,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-10-11 23:46:39,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:46:39,615 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-10-11 23:46:39,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-11 23:46:39,616 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-10-11 23:46:39,616 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-10-11 23:46:39,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-11 23:46:39,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:39,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:46:39,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:39,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 344145023, now seen corresponding path program 1 times [2024-10-11 23:46:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477127676] [2024-10-11 23:46:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477127676] [2024-10-11 23:46:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477127676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:39,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:39,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989348731] [2024-10-11 23:46:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:39,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:39,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:39,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-11 23:46:39,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:39,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:39,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:39,990 INFO L124 PetriNetUnfolderBase]: 1703/3321 cut-off events. [2024-10-11 23:46:39,991 INFO L125 PetriNetUnfolderBase]: For 993/1039 co-relation queries the response was YES. [2024-10-11 23:46:39,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 3321 events. 1703/3321 cut-off events. For 993/1039 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21038 event pairs, 837 based on Foata normal form. 82/3284 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-10-11 23:46:40,003 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-10-11 23:46:40,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-10-11 23:46:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-11 23:46:40,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-11 23:46:40,007 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-10-11 23:46:40,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-10-11 23:46:40,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:40,011 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-10-11 23:46:40,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-11 23:46:40,012 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-11 23:46:40,012 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-10-11 23:46:40,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-11 23:46:40,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:40,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:40,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:46:40,013 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:40,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2103671949, now seen corresponding path program 1 times [2024-10-11 23:46:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082145873] [2024-10-11 23:46:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:40,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082145873] [2024-10-11 23:46:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082145873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:40,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:40,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432367651] [2024-10-11 23:46:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:40,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:40,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:46:40,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 23:46:40,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-11 23:46:40,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:40,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 23:46:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:40,283 INFO L124 PetriNetUnfolderBase]: 898/2002 cut-off events. [2024-10-11 23:46:40,283 INFO L125 PetriNetUnfolderBase]: For 981/1077 co-relation queries the response was YES. [2024-10-11 23:46:40,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2002 events. 898/2002 cut-off events. For 981/1077 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11967 event pairs, 285 based on Foata normal form. 76/2030 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-10-11 23:46:40,291 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-11 23:46:40,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-10-11 23:46:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-11 23:46:40,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 23:46:40,292 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-10-11 23:46:40,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-10-11 23:46:40,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:40,297 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-10-11 23:46:40,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-10-11 23:46:40,297 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-10-11 23:46:40,297 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-10-11 23:46:40,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-11 23:46:40,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:40,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:40,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:46:40,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:40,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash -612273357, now seen corresponding path program 1 times [2024-10-11 23:46:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:40,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671496490] [2024-10-11 23:46:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:40,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671496490] [2024-10-11 23:46:40,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671496490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:40,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098897147] [2024-10-11 23:46:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:40,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:40,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:46:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:40,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:40,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:40,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:40,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098897147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:40,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:40,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:46:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481493801] [2024-10-11 23:46:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:40,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:40,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:40,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:40,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-10-11 23:46:40,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:40,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:40,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:40,801 INFO L124 PetriNetUnfolderBase]: 931/2010 cut-off events. [2024-10-11 23:46:40,802 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-10-11 23:46:40,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2010 events. 931/2010 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11432 event pairs, 189 based on Foata normal form. 70/2023 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-10-11 23:46:40,812 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-10-11 23:46:40,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-10-11 23:46:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-10-11 23:46:40,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-10-11 23:46:40,817 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-10-11 23:46:40,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-10-11 23:46:40,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:40,823 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-10-11 23:46:40,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-10-11 23:46:40,825 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-11 23:46:40,825 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-10-11 23:46:40,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-10-11 23:46:40,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:40,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:40,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:46:41,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:41,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:41,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1446954202, now seen corresponding path program 1 times [2024-10-11 23:46:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318921648] [2024-10-11 23:46:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318921648] [2024-10-11 23:46:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318921648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:41,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:41,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:41,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945237512] [2024-10-11 23:46:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:41,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:41,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-11 23:46:41,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:41,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:41,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:41,312 INFO L124 PetriNetUnfolderBase]: 1173/2605 cut-off events. [2024-10-11 23:46:41,312 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2024-10-11 23:46:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2605 events. 1173/2605 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16444 event pairs, 646 based on Foata normal form. 26/2624 useless extension candidates. Maximal degree in co-relation 5210. Up to 1363 conditions per place. [2024-10-11 23:46:41,324 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-10-11 23:46:41,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-10-11 23:46:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-11 23:46:41,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-10-11 23:46:41,325 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-10-11 23:46:41,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-10-11 23:46:41,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:41,331 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-10-11 23:46:41,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-10-11 23:46:41,333 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-10-11 23:46:41,334 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-10-11 23:46:41,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-11 23:46:41,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:41,334 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:41,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:46:41,334 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:41,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -36091053, now seen corresponding path program 1 times [2024-10-11 23:46:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:41,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72330451] [2024-10-11 23:46:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:41,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:41,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:41,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72330451] [2024-10-11 23:46:41,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72330451] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110434032] [2024-10-11 23:46:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:41,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:41,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:41,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:46:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:41,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:46:41,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:41,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:41,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110434032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:41,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:41,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:46:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734860651] [2024-10-11 23:46:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:41,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:46:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:46:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:46:41,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:41,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-11 23:46:41,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:41,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:41,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:41,724 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2024-10-11 23:46:41,725 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2024-10-11 23:46:41,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17482 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2024-10-11 23:46:41,737 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-10-11 23:46:41,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2024-10-11 23:46:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-11 23:46:41,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 23:46:41,739 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2024-10-11 23:46:41,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2024-10-11 23:46:41,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:41,743 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2024-10-11 23:46:41,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-11 23:46:41,744 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-10-11 23:46:41,744 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2024-10-11 23:46:41,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-11 23:46:41,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:41,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:41,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:46:41,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:41,945 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:41,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1800604415, now seen corresponding path program 1 times [2024-10-11 23:46:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597077551] [2024-10-11 23:46:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:42,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597077551] [2024-10-11 23:46:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597077551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:42,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759845668] [2024-10-11 23:46:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:42,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:42,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:46:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:42,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:42,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:42,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759845668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:42,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-11 23:46:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401554740] [2024-10-11 23:46:42,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:42,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 23:46:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 23:46:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:46:42,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:42,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 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) [2024-10-11 23:46:42,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:42,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:42,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:42,784 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2024-10-11 23:46:42,784 INFO L125 PetriNetUnfolderBase]: For 8542/8788 co-relation queries the response was YES. [2024-10-11 23:46:42,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8542/8788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35097 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2024-10-11 23:46:42,808 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-10-11 23:46:42,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2024-10-11 23:46:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:46:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:46:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-10-11 23:46:42,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-11 23:46:42,810 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2024-10-11 23:46:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2024-10-11 23:46:42,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:42,819 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2024-10-11 23:46:42,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-10-11 23:46:42,819 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-10-11 23:46:42,820 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2024-10-11 23:46:42,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 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) [2024-10-11 23:46:42,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:42,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:42,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:46:43,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:43,026 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:43,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1363123713, now seen corresponding path program 1 times [2024-10-11 23:46:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210416063] [2024-10-11 23:46:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:43,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210416063] [2024-10-11 23:46:43,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210416063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:43,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:43,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 23:46:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467768632] [2024-10-11 23:46:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:43,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:43,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:43,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2024-10-11 23:46:43,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:43,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:43,618 INFO L124 PetriNetUnfolderBase]: 2796/5802 cut-off events. [2024-10-11 23:46:43,618 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2024-10-11 23:46:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5802 events. 2796/5802 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37042 event pairs, 564 based on Foata normal form. 39/5836 useless extension candidates. Maximal degree in co-relation 13945. Up to 3403 conditions per place. [2024-10-11 23:46:43,643 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-10-11 23:46:43,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2024-10-11 23:46:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:46:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:46:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-10-11 23:46:43,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-10-11 23:46:43,644 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2024-10-11 23:46:43,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2024-10-11 23:46:43,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:43,657 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-10-11 23:46:43,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-10-11 23:46:43,658 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-10-11 23:46:43,658 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-10-11 23:46:43,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2024-10-11 23:46:43,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:43,658 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:43,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:46:43,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:43,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1118822150, now seen corresponding path program 1 times [2024-10-11 23:46:43,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216419820] [2024-10-11 23:46:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:43,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:43,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216419820] [2024-10-11 23:46:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216419820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:43,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:43,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:43,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840305408] [2024-10-11 23:46:43,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:43,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:43,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:43,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:43,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-11 23:46:43,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:43,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:43,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:44,293 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2024-10-11 23:46:44,293 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-10-11 23:46:44,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42773 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2024-10-11 23:46:44,332 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-10-11 23:46:44,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-10-11 23:46:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-11 23:46:44,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 23:46:44,334 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-10-11 23:46:44,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-10-11 23:46:44,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:44,356 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-10-11 23:46:44,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-10-11 23:46:44,357 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-10-11 23:46:44,357 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-10-11 23:46:44,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-11 23:46:44,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:44,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:44,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:46:44,358 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:44,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -602794938, now seen corresponding path program 1 times [2024-10-11 23:46:44,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:44,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604323914] [2024-10-11 23:46:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:44,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604323914] [2024-10-11 23:46:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604323914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2962645] [2024-10-11 23:46:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:44,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:44,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:46:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:44,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:44,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:44,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2962645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:44,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:46:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883741624] [2024-10-11 23:46:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:44,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:44,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:44,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-10-11 23:46:44,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:44,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:44,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:45,212 INFO L124 PetriNetUnfolderBase]: 2801/5737 cut-off events. [2024-10-11 23:46:45,212 INFO L125 PetriNetUnfolderBase]: For 13400/13418 co-relation queries the response was YES. [2024-10-11 23:46:45,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17839 conditions, 5737 events. 2801/5737 cut-off events. For 13400/13418 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 36601 event pairs, 159 based on Foata normal form. 178/5734 useless extension candidates. Maximal degree in co-relation 17017. Up to 3376 conditions per place. [2024-10-11 23:46:45,237 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 130 selfloop transitions, 5 changer transitions 0/158 dead transitions. [2024-10-11 23:46:45,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 1359 flow [2024-10-11 23:46:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:46:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:46:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-10-11 23:46:45,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-10-11 23:46:45,239 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 6 states and 181 transitions. [2024-10-11 23:46:45,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 1359 flow [2024-10-11 23:46:45,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 158 transitions, 1323 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:45,256 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 663 flow [2024-10-11 23:46:45,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-10-11 23:46:45,256 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-11 23:46:45,256 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 663 flow [2024-10-11 23:46:45,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-10-11 23:46:45,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:45,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:46:45,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:46:45,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 23:46:45,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:45,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1506773421, now seen corresponding path program 1 times [2024-10-11 23:46:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537993853] [2024-10-11 23:46:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537993853] [2024-10-11 23:46:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537993853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:45,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:45,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902767883] [2024-10-11 23:46:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:45,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:45,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:45,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-11 23:46:45,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:45,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:45,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:45,951 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-10-11 23:46:45,952 INFO L125 PetriNetUnfolderBase]: For 12816/12841 co-relation queries the response was YES. [2024-10-11 23:46:45,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12816/12841 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36791 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-10-11 23:46:45,975 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-10-11 23:46:45,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 1215 flow [2024-10-11 23:46:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-11 23:46:45,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 23:46:45,976 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-10-11 23:46:45,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 1215 flow [2024-10-11 23:46:45,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 135 transitions, 1206 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:46:45,992 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 670 flow [2024-10-11 23:46:45,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=670, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-10-11 23:46:45,993 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-10-11 23:46:45,993 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 670 flow [2024-10-11 23:46:45,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-11 23:46:45,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:45,993 INFO L204 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] [2024-10-11 23:46:45,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:46:45,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:45,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1672443283, now seen corresponding path program 1 times [2024-10-11 23:46:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799063468] [2024-10-11 23:46:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:45,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:46,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799063468] [2024-10-11 23:46:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799063468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:46,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:46,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 23:46:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680964077] [2024-10-11 23:46:46,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:46,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:46,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:46,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 670 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-10-11 23:46:46,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:46,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:46,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:46,613 INFO L124 PetriNetUnfolderBase]: 2862/5764 cut-off events. [2024-10-11 23:46:46,614 INFO L125 PetriNetUnfolderBase]: For 15016/15016 co-relation queries the response was YES. [2024-10-11 23:46:46,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18646 conditions, 5764 events. 2862/5764 cut-off events. For 15016/15016 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36305 event pairs, 455 based on Foata normal form. 104/5863 useless extension candidates. Maximal degree in co-relation 15627. Up to 3054 conditions per place. [2024-10-11 23:46:46,644 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-10-11 23:46:46,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 1107 flow [2024-10-11 23:46:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-10-11 23:46:46,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-10-11 23:46:46,645 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 670 flow. Second operand 7 states and 162 transitions. [2024-10-11 23:46:46,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 1107 flow [2024-10-11 23:46:46,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 1083 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:46,664 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 753 flow [2024-10-11 23:46:46,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=753, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-10-11 23:46:46,665 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-11 23:46:46,665 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 753 flow [2024-10-11 23:46:46,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-10-11 23:46:46,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:46,666 INFO L204 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] [2024-10-11 23:46:46,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:46:46,666 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:46,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 867564175, now seen corresponding path program 1 times [2024-10-11 23:46:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:46,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716541309] [2024-10-11 23:46:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:46,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716541309] [2024-10-11 23:46:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716541309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463255476] [2024-10-11 23:46:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:46,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:46,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:46,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:46:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:46,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:46:46,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:46,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463255476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:46,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:46,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-10-11 23:46:46,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118154676] [2024-10-11 23:46:46,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:46,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:46,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:46,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:46:46,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:46,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 753 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-10-11 23:46:46,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:46,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:47,582 INFO L124 PetriNetUnfolderBase]: 2819/5729 cut-off events. [2024-10-11 23:46:47,582 INFO L125 PetriNetUnfolderBase]: For 18154/18154 co-relation queries the response was YES. [2024-10-11 23:46:47,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18961 conditions, 5729 events. 2819/5729 cut-off events. For 18154/18154 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 36455 event pairs, 651 based on Foata normal form. 114/5838 useless extension candidates. Maximal degree in co-relation 16215. Up to 2849 conditions per place. [2024-10-11 23:46:47,617 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 87 selfloop transitions, 28 changer transitions 8/132 dead transitions. [2024-10-11 23:46:47,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 1244 flow [2024-10-11 23:46:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-10-11 23:46:47,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-10-11 23:46:47,618 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 753 flow. Second operand 7 states and 162 transitions. [2024-10-11 23:46:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 1244 flow [2024-10-11 23:46:47,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 132 transitions, 1225 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:47,640 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 875 flow [2024-10-11 23:46:47,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-10-11 23:46:47,640 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-10-11 23:46:47,640 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 875 flow [2024-10-11 23:46:47,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-10-11 23:46:47,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:47,641 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:47,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:46:47,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 23:46:47,841 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:47,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1301568832, now seen corresponding path program 2 times [2024-10-11 23:46:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815017903] [2024-10-11 23:46:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 23:46:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:48,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815017903] [2024-10-11 23:46:48,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815017903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536831136] [2024-10-11 23:46:48,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:46:48,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:48,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:48,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:46:48,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:46:48,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:46:48,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 23:46:48,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:48,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536831136] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:48,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-10-11 23:46:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802418707] [2024-10-11 23:46:48,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:48,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 23:46:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 23:46:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-10-11 23:46:48,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:48,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 875 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-11 23:46:48,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:48,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:48,966 INFO L124 PetriNetUnfolderBase]: 3024/6198 cut-off events. [2024-10-11 23:46:48,966 INFO L125 PetriNetUnfolderBase]: For 25266/25266 co-relation queries the response was YES. [2024-10-11 23:46:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21187 conditions, 6198 events. 3024/6198 cut-off events. For 25266/25266 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39340 event pairs, 483 based on Foata normal form. 68/6261 useless extension candidates. Maximal degree in co-relation 18768. Up to 1421 conditions per place. [2024-10-11 23:46:48,998 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-10-11 23:46:48,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 246 transitions, 2280 flow [2024-10-11 23:46:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:46:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:46:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-10-11 23:46:49,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2024-10-11 23:46:49,002 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 875 flow. Second operand 15 states and 359 transitions. [2024-10-11 23:46:49,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 246 transitions, 2280 flow [2024-10-11 23:46:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 246 transitions, 2243 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:49,029 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1341 flow [2024-10-11 23:46:49,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1341, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-10-11 23:46:49,030 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-10-11 23:46:49,030 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1341 flow [2024-10-11 23:46:49,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-11 23:46:49,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:49,030 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 23:46:49,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:46:49,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 23:46:49,231 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:49,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash 993993978, now seen corresponding path program 2 times [2024-10-11 23:46:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:49,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053846023] [2024-10-11 23:46:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:49,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053846023] [2024-10-11 23:46:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053846023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116723441] [2024-10-11 23:46:49,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:46:49,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:49,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:49,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:46:49,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:46:49,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:46:49,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:46:49,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:49,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116723441] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:49,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:49,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 23:46:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952494027] [2024-10-11 23:46:49,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:49,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:46:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:46:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-11 23:46:49,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1341 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-10-11 23:46:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:51,131 INFO L124 PetriNetUnfolderBase]: 5288/10870 cut-off events. [2024-10-11 23:46:51,131 INFO L125 PetriNetUnfolderBase]: For 56023/56023 co-relation queries the response was YES. [2024-10-11 23:46:51,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37807 conditions, 10870 events. 5288/10870 cut-off events. For 56023/56023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 67747 event pairs, 1005 based on Foata normal form. 234/11099 useless extension candidates. Maximal degree in co-relation 30382. Up to 2603 conditions per place. [2024-10-11 23:46:51,188 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2024-10-11 23:46:51,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 442 transitions, 4284 flow [2024-10-11 23:46:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 23:46:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 23:46:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2024-10-11 23:46:51,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842013888888888 [2024-10-11 23:46:51,190 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1341 flow. Second operand 24 states and 673 transitions. [2024-10-11 23:46:51,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 442 transitions, 4284 flow [2024-10-11 23:46:51,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 442 transitions, 4260 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:51,245 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 2172 flow [2024-10-11 23:46:51,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2172, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-10-11 23:46:51,246 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-10-11 23:46:51,246 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 2172 flow [2024-10-11 23:46:51,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-10-11 23:46:51,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:51,246 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:51,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:46:51,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:51,447 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:51,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1338732778, now seen corresponding path program 3 times [2024-10-11 23:46:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:51,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179738877] [2024-10-11 23:46:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:51,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179738877] [2024-10-11 23:46:51,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179738877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529139535] [2024-10-11 23:46:51,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:46:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:51,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:51,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:46:51,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 23:46:51,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:46:51,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 23:46:51,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:51,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529139535] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:51,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 23:46:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248748712] [2024-10-11 23:46:51,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 23:46:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 23:46:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-10-11 23:46:51,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:51,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 2172 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-11 23:46:51,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:51,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:51,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:54,123 INFO L124 PetriNetUnfolderBase]: 7243/14769 cut-off events. [2024-10-11 23:46:54,123 INFO L125 PetriNetUnfolderBase]: For 91199/91199 co-relation queries the response was YES. [2024-10-11 23:46:54,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53212 conditions, 14769 events. 7243/14769 cut-off events. For 91199/91199 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98113 event pairs, 767 based on Foata normal form. 108/14872 useless extension candidates. Maximal degree in co-relation 50344. Up to 2506 conditions per place. [2024-10-11 23:46:54,209 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2024-10-11 23:46:54,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 457 transitions, 5157 flow [2024-10-11 23:46:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 23:46:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 23:46:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2024-10-11 23:46:54,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-10-11 23:46:54,212 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 2172 flow. Second operand 26 states and 621 transitions. [2024-10-11 23:46:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 457 transitions, 5157 flow [2024-10-11 23:46:54,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 457 transitions, 5037 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-10-11 23:46:54,439 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 3434 flow [2024-10-11 23:46:54,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3434, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-10-11 23:46:54,439 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-10-11 23:46:54,439 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 3434 flow [2024-10-11 23:46:54,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-11 23:46:54,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:54,440 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:54,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 23:46:54,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 23:46:54,645 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:54,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:54,645 INFO L85 PathProgramCache]: Analyzing trace with hash -118192390, now seen corresponding path program 4 times [2024-10-11 23:46:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:54,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82751201] [2024-10-11 23:46:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82751201] [2024-10-11 23:46:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82751201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432270244] [2024-10-11 23:46:54,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 23:46:54,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:54,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:54,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:54,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:46:55,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 23:46:55,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:46:55,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 23:46:55,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:55,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432270244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:55,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-10-11 23:46:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158884409] [2024-10-11 23:46:55,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:55,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 23:46:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 23:46:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-10-11 23:46:55,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:46:55,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 3434 flow. Second operand has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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) [2024-10-11 23:46:55,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:55,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:46:55,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:59,056 INFO L124 PetriNetUnfolderBase]: 10036/20416 cut-off events. [2024-10-11 23:46:59,056 INFO L125 PetriNetUnfolderBase]: For 158701/158701 co-relation queries the response was YES. [2024-10-11 23:46:59,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76160 conditions, 20416 events. 10036/20416 cut-off events. For 158701/158701 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 141821 event pairs, 971 based on Foata normal form. 218/20629 useless extension candidates. Maximal degree in co-relation 74762. Up to 3481 conditions per place. [2024-10-11 23:46:59,177 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 420 selfloop transitions, 222 changer transitions 0/651 dead transitions. [2024-10-11 23:46:59,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 651 transitions, 7817 flow [2024-10-11 23:46:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 23:46:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 23:46:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 882 transitions. [2024-10-11 23:46:59,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-10-11 23:46:59,180 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 3434 flow. Second operand 37 states and 882 transitions. [2024-10-11 23:46:59,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 651 transitions, 7817 flow [2024-10-11 23:46:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 651 transitions, 7507 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-10-11 23:46:59,419 INFO L231 Difference]: Finished difference. Result has 208 places, 279 transitions, 5129 flow [2024-10-11 23:46:59,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5129, PETRI_PLACES=208, PETRI_TRANSITIONS=279} [2024-10-11 23:46:59,419 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2024-10-11 23:46:59,419 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 279 transitions, 5129 flow [2024-10-11 23:46:59,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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) [2024-10-11 23:46:59,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:59,420 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:59,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 23:46:59,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:46:59,620 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:59,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1427679914, now seen corresponding path program 5 times [2024-10-11 23:46:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808308607] [2024-10-11 23:46:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:46:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808308607] [2024-10-11 23:46:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808308607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015677760] [2024-10-11 23:46:59,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 23:46:59,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:59,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:59,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:59,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 23:47:00,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-11 23:47:00,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:00,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 23:47:00,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:00,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015677760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:00,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2024-10-11 23:47:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699712697] [2024-10-11 23:47:00,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:00,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 23:47:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 23:47:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 23:47:00,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:47:00,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 5129 flow. Second operand has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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) [2024-10-11 23:47:00,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:00,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:47:00,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:06,619 INFO L124 PetriNetUnfolderBase]: 14157/28765 cut-off events. [2024-10-11 23:47:06,619 INFO L125 PetriNetUnfolderBase]: For 260051/260051 co-relation queries the response was YES. [2024-10-11 23:47:06,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110057 conditions, 28765 events. 14157/28765 cut-off events. For 260051/260051 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 205101 event pairs, 1285 based on Foata normal form. 316/29076 useless extension candidates. Maximal degree in co-relation 108276. Up to 4918 conditions per place. [2024-10-11 23:47:06,810 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 542 selfloop transitions, 323 changer transitions 0/874 dead transitions. [2024-10-11 23:47:06,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 874 transitions, 11259 flow [2024-10-11 23:47:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-11 23:47:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-11 23:47:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1143 transitions. [2024-10-11 23:47:06,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2024-10-11 23:47:06,812 INFO L175 Difference]: Start difference. First operand has 208 places, 279 transitions, 5129 flow. Second operand 48 states and 1143 transitions. [2024-10-11 23:47:06,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 874 transitions, 11259 flow [2024-10-11 23:47:07,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 874 transitions, 10702 flow, removed 265 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:07,311 INFO L231 Difference]: Finished difference. Result has 261 places, 385 transitions, 7617 flow [2024-10-11 23:47:07,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7617, PETRI_PLACES=261, PETRI_TRANSITIONS=385} [2024-10-11 23:47:07,311 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2024-10-11 23:47:07,311 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 385 transitions, 7617 flow [2024-10-11 23:47:07,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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) [2024-10-11 23:47:07,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:07,312 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:07,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 23:47:07,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:07,513 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:07,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 768173178, now seen corresponding path program 1 times [2024-10-11 23:47:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822034669] [2024-10-11 23:47:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 203 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 23:47:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822034669] [2024-10-11 23:47:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822034669] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381845961] [2024-10-11 23:47:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:07,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:07,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:07,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 23:47:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:08,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 23:47:08,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 197 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 23:47:08,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 197 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 23:47:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381845961] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:08,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2024-10-11 23:47:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583457013] [2024-10-11 23:47:08,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:08,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 23:47:08,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 23:47:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-10-11 23:47:08,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:47:08,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 385 transitions, 7617 flow. Second operand has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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) [2024-10-11 23:47:08,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:08,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:47:08,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:18,537 INFO L124 PetriNetUnfolderBase]: 24095/49397 cut-off events. [2024-10-11 23:47:18,537 INFO L125 PetriNetUnfolderBase]: For 461949/461949 co-relation queries the response was YES. [2024-10-11 23:47:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192706 conditions, 49397 events. 24095/49397 cut-off events. For 461949/461949 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 409265 event pairs, 3127 based on Foata normal form. 324/49716 useless extension candidates. Maximal degree in co-relation 185440. Up to 10645 conditions per place. [2024-10-11 23:47:19,067 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 441 selfloop transitions, 604 changer transitions 0/1054 dead transitions. [2024-10-11 23:47:19,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1054 transitions, 19428 flow [2024-10-11 23:47:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 23:47:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 23:47:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 651 transitions. [2024-10-11 23:47:19,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-10-11 23:47:19,069 INFO L175 Difference]: Start difference. First operand has 261 places, 385 transitions, 7617 flow. Second operand 27 states and 651 transitions. [2024-10-11 23:47:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1054 transitions, 19428 flow [2024-10-11 23:47:20,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1054 transitions, 18666 flow, removed 323 selfloop flow, removed 10 redundant places. [2024-10-11 23:47:20,893 INFO L231 Difference]: Finished difference. Result has 290 places, 784 transitions, 17285 flow [2024-10-11 23:47:20,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17285, PETRI_PLACES=290, PETRI_TRANSITIONS=784} [2024-10-11 23:47:20,894 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 244 predicate places. [2024-10-11 23:47:20,894 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 784 transitions, 17285 flow [2024-10-11 23:47:20,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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) [2024-10-11 23:47:20,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:20,894 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:20,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:21,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:21,095 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:21,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash 176947876, now seen corresponding path program 6 times [2024-10-11 23:47:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448795380] [2024-10-11 23:47:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448795380] [2024-10-11 23:47:21,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448795380] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111981274] [2024-10-11 23:47:21,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 23:47:21,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:21,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:21,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:21,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 23:47:21,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-11 23:47:21,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:21,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 23:47:21,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:22,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:22,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111981274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:22,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:22,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-10-11 23:47:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412771795] [2024-10-11 23:47:22,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:22,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-11 23:47:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-11 23:47:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 23:47:22,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:47:22,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 784 transitions, 17285 flow. Second operand has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 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) [2024-10-11 23:47:22,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:22,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:47:22,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand