./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:39:48,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:39:48,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:39:48,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:39:48,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:39:48,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:39:48,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:39:48,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:39:48,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:39:48,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:39:48,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:39:48,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:39:48,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:39:48,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:39:48,503 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:39:48,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:39:48,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:39:48,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:39:48,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:39:48,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:39:48,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:39:48,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:39:48,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:39:48,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:39:48,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:39:48,510 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:39:48,510 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:39:48,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:39:48,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:39:48,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:39:48,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:39:48,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:39:48,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:39:48,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:39:48,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:48,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:39:48,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:39:48,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:39:48,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:39:48,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:39:48,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:39:48,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:39:48,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:39:48,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:39:48,516 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-11-23 01:39:48,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:39:48,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:39:48,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:39:48,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:39:48,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:39:48,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-23 01:39:50,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:39:50,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:39:50,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-23 01:39:50,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5387395f/beab8bca09f347a7a4e3e08a2ff00a58/FLAG8bf1d4d4b [2024-11-23 01:39:50,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5387395f/beab8bca09f347a7a4e3e08a2ff00a58 [2024-11-23 01:39:50,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:39:50,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:39:50,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:50,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:39:50,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:39:50,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:50" (1/1) ... [2024-11-23 01:39:50,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c32e4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:50, skipping insertion in model container [2024-11-23 01:39:50,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:50" (1/1) ... [2024-11-23 01:39:50,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:39:51,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:51,496 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:39:51,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:51,712 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:39:51,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51 WrapperNode [2024-11-23 01:39:51,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:51,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:51,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:39:51,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:39:51,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,875 INFO L138 Inliner]: procedures = 274, calls = 1654, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1813 [2024-11-23 01:39:51,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:51,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:39:51,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:39:51,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:39:51,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,953 INFO L175 MemorySlicer]: Split 1635 memory accesses to 4 slices as follows [2, 5, 802, 826]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-23 01:39:51,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:39:52,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:39:52,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:39:52,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:39:52,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:52,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:39:52,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:39:52,140 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-23 01:39:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-23 01:39:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-23 01:39:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-23 01:39:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:39:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:39:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:39:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:39:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:39:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:39:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:39:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:39:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:39:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:39:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:39:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:39:52,146 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:39:52,376 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:39:52,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:39:54,306 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:39:54,307 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:40:25,895 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:40:25,895 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 01:40:25,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:25 BoogieIcfgContainer [2024-11-23 01:40:25,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:40:25,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:40:25,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:40:25,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:40:25,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:50" (1/3) ... [2024-11-23 01:40:25,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdf0c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:25, skipping insertion in model container [2024-11-23 01:40:25,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (2/3) ... [2024-11-23 01:40:25,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdf0c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:25, skipping insertion in model container [2024-11-23 01:40:25,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:25" (3/3) ... [2024-11-23 01:40:25,906 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-11-23 01:40:25,926 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:40:25,926 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 01:40:25,926 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:40:26,040 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:40:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-11-23 01:40:26,218 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-23 01:40:26,218 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:40:26,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 173 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-11-23 01:40:26,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-11-23 01:40:26,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-11-23 01:40:26,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:40:26,247 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;@2f5bae81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:40:26,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-23 01:40:26,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:40:26,349 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-23 01:40:26,349 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:40:26,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:26,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:26,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:26,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1319946339, now seen corresponding path program 1 times [2024-11-23 01:40:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:26,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332562451] [2024-11-23 01:40:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332562451] [2024-11-23 01:40:29,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332562451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:29,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:29,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:40:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600813226] [2024-11-23 01:40:29,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:29,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:29,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:29,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:29,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:29,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:29,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:29,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:30,135 INFO L124 PetriNetUnfolderBase]: 1022/2058 cut-off events. [2024-11-23 01:40:30,136 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-23 01:40:30,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 2058 events. 1022/2058 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13221 event pairs, 209 based on Foata normal form. 28/1694 useless extension candidates. Maximal degree in co-relation 3564. Up to 1033 conditions per place. [2024-11-23 01:40:30,160 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 73 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-11-23 01:40:30,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 372 flow [2024-11-23 01:40:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-23 01:40:30,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7008196721311475 [2024-11-23 01:40:30,179 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 4 states and 171 transitions. [2024-11-23 01:40:30,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 372 flow [2024-11-23 01:40:30,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:30,191 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 156 flow [2024-11-23 01:40:30,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-23 01:40:30,198 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-23 01:40:30,199 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 156 flow [2024-11-23 01:40:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:30,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:30,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:30,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:40:30,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:30,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2031332627, now seen corresponding path program 1 times [2024-11-23 01:40:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361630348] [2024-11-23 01:40:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:32,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361630348] [2024-11-23 01:40:32,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361630348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:40:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940855689] [2024-11-23 01:40:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:32,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:32,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:32,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:32,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:32,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:32,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:32,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:32,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:33,167 INFO L124 PetriNetUnfolderBase]: 1017/2063 cut-off events. [2024-11-23 01:40:33,167 INFO L125 PetriNetUnfolderBase]: For 425/429 co-relation queries the response was YES. [2024-11-23 01:40:33,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 2063 events. 1017/2063 cut-off events. For 425/429 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13211 event pairs, 213 based on Foata normal form. 46/1819 useless extension candidates. Maximal degree in co-relation 3538. Up to 1122 conditions per place. [2024-11-23 01:40:33,181 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-11-23 01:40:33,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 435 flow [2024-11-23 01:40:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:40:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:40:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-11-23 01:40:33,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6688524590163935 [2024-11-23 01:40:33,184 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 156 flow. Second operand 5 states and 204 transitions. [2024-11-23 01:40:33,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 435 flow [2024-11-23 01:40:33,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:33,188 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 174 flow [2024-11-23 01:40:33,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-23 01:40:33,189 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-11-23 01:40:33,189 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 174 flow [2024-11-23 01:40:33,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:33,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:33,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:33,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:40:33,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:33,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1119146303, now seen corresponding path program 1 times [2024-11-23 01:40:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:33,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549631517] [2024-11-23 01:40:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549631517] [2024-11-23 01:40:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549631517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:33,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:33,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:40:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976859237] [2024-11-23 01:40:33,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:33,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:40:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:40:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:40:33,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-23 01:40:33,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:33,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:33,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-23 01:40:33,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:33,875 INFO L124 PetriNetUnfolderBase]: 473/1087 cut-off events. [2024-11-23 01:40:33,876 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-11-23 01:40:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1087 events. 473/1087 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6373 event pairs, 266 based on Foata normal form. 27/998 useless extension candidates. Maximal degree in co-relation 1822. Up to 444 conditions per place. [2024-11-23 01:40:33,881 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 39 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2024-11-23 01:40:33,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 277 flow [2024-11-23 01:40:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:40:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:40:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-23 01:40:33,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-23 01:40:33,883 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 174 flow. Second operand 3 states and 120 transitions. [2024-11-23 01:40:33,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 277 flow [2024-11-23 01:40:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 264 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 01:40:33,885 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 153 flow [2024-11-23 01:40:33,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-23 01:40:33,886 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-11-23 01:40:33,886 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 153 flow [2024-11-23 01:40:33,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:33,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:33,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:33,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:40:33,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:33,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2099587536, now seen corresponding path program 1 times [2024-11-23 01:40:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874460940] [2024-11-23 01:40:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:36,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:36,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874460940] [2024-11-23 01:40:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874460940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795070554] [2024-11-23 01:40:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:36,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:40:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:40:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:40:36,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:36,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:36,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:36,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:36,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:36,606 INFO L124 PetriNetUnfolderBase]: 505/1127 cut-off events. [2024-11-23 01:40:36,606 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-23 01:40:36,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1127 events. 505/1127 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6475 event pairs, 179 based on Foata normal form. 12/1025 useless extension candidates. Maximal degree in co-relation 1878. Up to 476 conditions per place. [2024-11-23 01:40:36,614 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 71 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-23 01:40:36,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 403 flow [2024-11-23 01:40:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:40:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:40:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-23 01:40:36,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5956284153005464 [2024-11-23 01:40:36,617 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 153 flow. Second operand 6 states and 218 transitions. [2024-11-23 01:40:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 403 flow [2024-11-23 01:40:36,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:40:36,622 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 184 flow [2024-11-23 01:40:36,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-11-23 01:40:36,624 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-11-23 01:40:36,624 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 184 flow [2024-11-23 01:40:36,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:36,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:36,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:36,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:40:36,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:36,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash 662709001, now seen corresponding path program 1 times [2024-11-23 01:40:36,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:36,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371061876] [2024-11-23 01:40:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:36,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371061876] [2024-11-23 01:40:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371061876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162391951] [2024-11-23 01:40:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:37,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:37,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:37,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-23 01:40:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:37,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:37,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:37,831 INFO L124 PetriNetUnfolderBase]: 440/980 cut-off events. [2024-11-23 01:40:37,831 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-11-23 01:40:37,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 980 events. 440/980 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5189 event pairs, 293 based on Foata normal form. 24/933 useless extension candidates. Maximal degree in co-relation 1833. Up to 591 conditions per place. [2024-11-23 01:40:37,838 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-23 01:40:37,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 325 flow [2024-11-23 01:40:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-23 01:40:37,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-11-23 01:40:37,840 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 184 flow. Second operand 4 states and 151 transitions. [2024-11-23 01:40:37,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 325 flow [2024-11-23 01:40:37,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:37,844 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 192 flow [2024-11-23 01:40:37,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-23 01:40:37,846 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-23 01:40:37,846 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 192 flow [2024-11-23 01:40:37,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-23 01:40:37,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:37,847 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:37,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:40:37,848 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:37,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1197003306, now seen corresponding path program 1 times [2024-11-23 01:40:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546716276] [2024-11-23 01:40:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:39,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546716276] [2024-11-23 01:40:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546716276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:39,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:40:39,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221666885] [2024-11-23 01:40:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:39,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:40:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:40:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:40:39,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-23 01:40:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-23 01:40:39,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:40,504 INFO L124 PetriNetUnfolderBase]: 398/938 cut-off events. [2024-11-23 01:40:40,505 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-23 01:40:40,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 938 events. 398/938 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5013 event pairs, 118 based on Foata normal form. 12/895 useless extension candidates. Maximal degree in co-relation 1667. Up to 457 conditions per place. [2024-11-23 01:40:40,513 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/86 dead transitions. [2024-11-23 01:40:40,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 369 flow [2024-11-23 01:40:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:40:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:40:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-23 01:40:40,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-11-23 01:40:40,516 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 192 flow. Second operand 5 states and 187 transitions. [2024-11-23 01:40:40,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 369 flow [2024-11-23 01:40:40,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:40,520 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 196 flow [2024-11-23 01:40:40,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-23 01:40:40,522 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-11-23 01:40:40,523 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 196 flow [2024-11-23 01:40:40,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:40,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:40,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:40,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:40:40,524 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:40,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1961473644, now seen corresponding path program 1 times [2024-11-23 01:40:40,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587246547] [2024-11-23 01:40:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587246547] [2024-11-23 01:40:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587246547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898159246] [2024-11-23 01:40:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:42,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:42,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:42,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:40:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:42,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 01:40:42,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:42,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-23 01:40:43,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 01:40:43,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-11-23 01:40:43,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:43,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-23 01:40:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:43,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:43,452 INFO L349 Elim1Store]: treesize reduction 49, result has 53.3 percent of original size [2024-11-23 01:40:43,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 188 [2024-11-23 01:40:43,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:43,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 140 [2024-11-23 01:40:43,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2024-11-23 01:40:43,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:43,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 184 [2024-11-23 01:40:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898159246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:44,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-23 01:40:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741965630] [2024-11-23 01:40:44,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:44,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 01:40:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 01:40:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-23 01:40:44,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-23 01:40:44,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 196 flow. Second operand has 16 states, 16 states have (on average 24.1875) internal successors, (387), 16 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:44,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:44,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-23 01:40:44,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:45,371 INFO L124 PetriNetUnfolderBase]: 482/1085 cut-off events. [2024-11-23 01:40:45,371 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-11-23 01:40:45,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 1085 events. 482/1085 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5537 event pairs, 209 based on Foata normal form. 12/1019 useless extension candidates. Maximal degree in co-relation 1966. Up to 411 conditions per place. [2024-11-23 01:40:45,378 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 56 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2024-11-23 01:40:45,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 371 flow [2024-11-23 01:40:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:40:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:40:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-11-23 01:40:45,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5218579234972678 [2024-11-23 01:40:45,380 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 196 flow. Second operand 6 states and 191 transitions. [2024-11-23 01:40:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 371 flow [2024-11-23 01:40:45,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 361 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:40:45,384 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 208 flow [2024-11-23 01:40:45,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-23 01:40:45,387 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-23 01:40:45,387 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 208 flow [2024-11-23 01:40:45,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.1875) internal successors, (387), 16 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:45,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:45,388 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:45,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 01:40:45,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:45,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:45,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -676136996, now seen corresponding path program 1 times [2024-11-23 01:40:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:45,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978995488] [2024-11-23 01:40:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978995488] [2024-11-23 01:40:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978995488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795955899] [2024-11-23 01:40:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:48,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:48,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:48,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:48,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:40:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:49,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-23 01:40:49,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:49,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2024-11-23 01:40:49,580 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:49,606 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-23 01:40:49,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2024-11-23 01:40:49,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 01:40:49,671 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:49,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 27 [2024-11-23 01:40:49,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-11-23 01:40:49,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2024-11-23 01:40:49,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:49,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2024-11-23 01:40:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:49,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:50,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795955899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:50,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:50,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-23 01:40:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777412945] [2024-11-23 01:40:50,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:40:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:40:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:40:50,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2024-11-23 01:40:50,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 208 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:50,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:50,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2024-11-23 01:40:50,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:52,652 INFO L124 PetriNetUnfolderBase]: 1076/2395 cut-off events. [2024-11-23 01:40:52,653 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2024-11-23 01:40:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5390 conditions, 2395 events. 1076/2395 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14751 event pairs, 163 based on Foata normal form. 36/2232 useless extension candidates. Maximal degree in co-relation 4605. Up to 572 conditions per place. [2024-11-23 01:40:52,671 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 166 selfloop transitions, 19 changer transitions 3/207 dead transitions. [2024-11-23 01:40:52,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 207 transitions, 994 flow [2024-11-23 01:40:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:40:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:40:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 505 transitions. [2024-11-23 01:40:52,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5519125683060109 [2024-11-23 01:40:52,674 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 208 flow. Second operand 15 states and 505 transitions. [2024-11-23 01:40:52,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 207 transitions, 994 flow [2024-11-23 01:40:52,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 207 transitions, 973 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:52,681 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 331 flow [2024-11-23 01:40:52,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=331, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-23 01:40:52,683 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-11-23 01:40:52,683 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 331 flow [2024-11-23 01:40:52,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:52,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:52,684 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:52,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:40:52,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 01:40:52,885 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:52,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1227469057, now seen corresponding path program 1 times [2024-11-23 01:40:52,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:52,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583612262] [2024-11-23 01:40:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:55,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583612262] [2024-11-23 01:40:55,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583612262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586617908] [2024-11-23 01:40:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:55,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:55,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process