./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:41:41,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:41:42,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:41:42,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:41:42,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:41:42,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:41:42,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:41:42,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:41:42,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:41:42,068 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:41:42,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:41:42,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:41:42,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:41:42,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:41:42,070 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:41:42,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:41:42,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:41:42,071 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:41:42,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:41:42,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:41:42,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:41:42,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:41:42,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:41:42,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:41:42,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:41:42,074 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:41:42,075 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:41:42,075 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:41:42,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:41:42,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:41:42,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:41:42,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:41:42,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:41:42,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:41:42,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:42,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:41:42,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:41:42,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:41:42,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:41:42,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:41:42,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:41:42,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:41:42,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:41:42,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:41:42,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-10-24 23:41:42,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:41:42,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:41:42,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:41:42,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:41:42,358 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:41:42,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-24 23:41:43,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:41:44,021 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:41:44,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-24 23:41:44,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cd0138a/d7c9df894ceb4a67bed3cadb5febaf06/FLAG4c4c1be7f [2024-10-24 23:41:44,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cd0138a/d7c9df894ceb4a67bed3cadb5febaf06 [2024-10-24 23:41:44,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:41:44,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:41:44,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:44,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:41:44,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:41:44,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553334f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44, skipping insertion in model container [2024-10-24 23:41:44,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:41:44,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:44,325 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:41:44,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:44,370 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:41:44,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44 WrapperNode [2024-10-24 23:41:44,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:44,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:44,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:41:44,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:41:44,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,425 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2024-10-24 23:41:44,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:44,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:41:44,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:41:44,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:41:44,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,440 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,456 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 23:41:44,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:41:44,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:41:44,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:41:44,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:41:44,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (1/1) ... [2024-10-24 23:41:44,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:44,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:44,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:41:44,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:41:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:41:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:41:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:41:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:41:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:41:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:41:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:41:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:41:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:41:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:41:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:41:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:41:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:41:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:41:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:41:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:41:44,569 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:41:44,697 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:41:44,699 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:41:45,164 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:41:45,165 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:41:45,462 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:41:45,462 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:41:45,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:45 BoogieIcfgContainer [2024-10-24 23:41:45,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:41:45,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:41:45,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:41:45,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:41:45,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:44" (1/3) ... [2024-10-24 23:41:45,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a47bce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:45, skipping insertion in model container [2024-10-24 23:41:45,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:44" (2/3) ... [2024-10-24 23:41:45,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a47bce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:45, skipping insertion in model container [2024-10-24 23:41:45,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:45" (3/3) ... [2024-10-24 23:41:45,474 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-10-24 23:41:45,491 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:41:45,491 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 23:41:45,492 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:41:45,550 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:41:45,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 23:41:45,621 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-24 23:41:45,622 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:41:45,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-24 23:41:45,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 23:41:45,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-10-24 23:41:45,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:41:45,649 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;@2da7ddca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:41:45,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 23:41:45,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:41:45,654 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:41:45,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:41:45,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:45,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:41:45,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:45,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash 627926, now seen corresponding path program 1 times [2024-10-24 23:41:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:45,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706217007] [2024-10-24 23:41:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:45,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706217007] [2024-10-24 23:41:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706217007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473320575] [2024-10-24 23:41:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:45,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:45,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:46,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:46,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 23:41:46,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:46,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:46,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:46,181 INFO L124 PetriNetUnfolderBase]: 63/161 cut-off events. [2024-10-24 23:41:46,181 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 23:41:46,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 161 events. 63/161 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 42 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 245. Up to 107 conditions per place. [2024-10-24 23:41:46,185 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 16 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-10-24 23:41:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 121 flow [2024-10-24 23:41:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-24 23:41:46,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 23:41:46,204 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 80 transitions. [2024-10-24 23:41:46,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 121 flow [2024-10-24 23:41:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:41:46,211 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 84 flow [2024-10-24 23:41:46,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-10-24 23:41:46,219 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-10-24 23:41:46,220 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 84 flow [2024-10-24 23:41:46,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 23:41:46,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:46,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:41:46,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:41:46,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:46,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 19466337, now seen corresponding path program 1 times [2024-10-24 23:41:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564500764] [2024-10-24 23:41:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564500764] [2024-10-24 23:41:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564500764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802803708] [2024-10-24 23:41:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:46,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:46,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:46,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 23:41:46,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:46,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:46,476 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2024-10-24 23:41:46,476 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 23:41:46,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 169 events. 65/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 643 event pairs, 42 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 264. Up to 116 conditions per place. [2024-10-24 23:41:46,483 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-10-24 23:41:46,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 162 flow [2024-10-24 23:41:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-24 23:41:46,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-24 23:41:46,486 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 84 flow. Second operand 4 states and 86 transitions. [2024-10-24 23:41:46,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 162 flow [2024-10-24 23:41:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:41:46,492 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 128 flow [2024-10-24 23:41:46,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-10-24 23:41:46,493 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-24 23:41:46,494 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 128 flow [2024-10-24 23:41:46,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 23:41:46,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:46,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:41:46,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:41:46,496 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:46,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 101669241, now seen corresponding path program 1 times [2024-10-24 23:41:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783371948] [2024-10-24 23:41:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783371948] [2024-10-24 23:41:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783371948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991734808] [2024-10-24 23:41:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:46,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:46,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:46,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:41:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:46,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:46,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991734808] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:46,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:46,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:41:46,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171893484] [2024-10-24 23:41:46,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:46,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:41:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:46,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:41:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:41:46,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:46,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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) [2024-10-24 23:41:46,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:46,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:46,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:47,155 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2024-10-24 23:41:47,155 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-24 23:41:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 193 events. 71/193 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 780 event pairs, 42 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 275. Up to 119 conditions per place. [2024-10-24 23:41:47,160 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2024-10-24 23:41:47,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 298 flow [2024-10-24 23:41:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-10-24 23:41:47,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-24 23:41:47,164 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 10 states and 192 transitions. [2024-10-24 23:41:47,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 298 flow [2024-10-24 23:41:47,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:47,167 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 290 flow [2024-10-24 23:41:47,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-10-24 23:41:47,169 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-24 23:41:47,169 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 290 flow [2024-10-24 23:41:47,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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) [2024-10-24 23:41:47,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:47,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:47,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:41:47,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:47,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:47,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1747027574, now seen corresponding path program 1 times [2024-10-24 23:41:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259935699] [2024-10-24 23:41:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:47,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259935699] [2024-10-24 23:41:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259935699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:47,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:47,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317210334] [2024-10-24 23:41:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:47,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:47,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:47,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-24 23:41:47,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:47,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:47,614 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2024-10-24 23:41:47,615 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-24 23:41:47,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 365 events. 165/365 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1578 event pairs, 67 based on Foata normal form. 10/356 useless extension candidates. Maximal degree in co-relation 704. Up to 219 conditions per place. [2024-10-24 23:41:47,618 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-10-24 23:41:47,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 460 flow [2024-10-24 23:41:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-10-24 23:41:47,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-10-24 23:41:47,620 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 290 flow. Second operand 4 states and 103 transitions. [2024-10-24 23:41:47,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 460 flow [2024-10-24 23:41:47,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 396 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-24 23:41:47,629 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 255 flow [2024-10-24 23:41:47,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-10-24 23:41:47,630 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-10-24 23:41:47,630 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 255 flow [2024-10-24 23:41:47,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-24 23:41:47,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:47,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:41:47,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:47,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:47,631 INFO L85 PathProgramCache]: Analyzing trace with hash 674683126, now seen corresponding path program 1 times [2024-10-24 23:41:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140806103] [2024-10-24 23:41:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:47,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:47,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140806103] [2024-10-24 23:41:47,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140806103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:47,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:47,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245666426] [2024-10-24 23:41:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:47,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:47,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:47,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 23:41:47,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:47,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:47,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:47,828 INFO L124 PetriNetUnfolderBase]: 248/490 cut-off events. [2024-10-24 23:41:47,829 INFO L125 PetriNetUnfolderBase]: For 190/239 co-relation queries the response was YES. [2024-10-24 23:41:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 490 events. 248/490 cut-off events. For 190/239 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2056 event pairs, 117 based on Foata normal form. 30/499 useless extension candidates. Maximal degree in co-relation 1083. Up to 310 conditions per place. [2024-10-24 23:41:47,834 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-10-24 23:41:47,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 461 flow [2024-10-24 23:41:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-24 23:41:47,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-10-24 23:41:47,838 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 255 flow. Second operand 4 states and 101 transitions. [2024-10-24 23:41:47,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 461 flow [2024-10-24 23:41:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:47,844 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 281 flow [2024-10-24 23:41:47,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-10-24 23:41:47,845 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-10-24 23:41:47,845 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 281 flow [2024-10-24 23:41:47,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-24 23:41:47,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:47,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:47,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:41:47,846 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:47,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 764148641, now seen corresponding path program 1 times [2024-10-24 23:41:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864615674] [2024-10-24 23:41:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864615674] [2024-10-24 23:41:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864615674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:48,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924967805] [2024-10-24 23:41:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:48,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:48,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-24 23:41:48,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-10-24 23:41:48,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:48,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-24 23:41:48,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:48,139 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2024-10-24 23:41:48,139 INFO L125 PetriNetUnfolderBase]: For 218/249 co-relation queries the response was YES. [2024-10-24 23:41:48,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 468 events. 190/468 cut-off events. For 218/249 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2111 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1095. Up to 273 conditions per place. [2024-10-24 23:41:48,142 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 55 selfloop transitions, 3 changer transitions 14/88 dead transitions. [2024-10-24 23:41:48,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 529 flow [2024-10-24 23:41:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-24 23:41:48,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-24 23:41:48,144 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 281 flow. Second operand 4 states and 109 transitions. [2024-10-24 23:41:48,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 529 flow [2024-10-24 23:41:48,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:48,153 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 289 flow [2024-10-24 23:41:48,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-10-24 23:41:48,154 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-10-24 23:41:48,155 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 289 flow [2024-10-24 23:41:48,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-10-24 23:41:48,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:48,156 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:41:48,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:41:48,156 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:48,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2071405983, now seen corresponding path program 2 times [2024-10-24 23:41:48,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:48,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009258431] [2024-10-24 23:41:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009258431] [2024-10-24 23:41:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009258431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890448811] [2024-10-24 23:41:48,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:41:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:48,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:48,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:41:48,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:41:48,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:41:48,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:48,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:48,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890448811] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:48,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:41:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843063811] [2024-10-24 23:41:48,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:48,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:41:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:41:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:41:48,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:48,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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) [2024-10-24 23:41:48,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:48,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:48,893 INFO L124 PetriNetUnfolderBase]: 193/428 cut-off events. [2024-10-24 23:41:48,894 INFO L125 PetriNetUnfolderBase]: For 295/326 co-relation queries the response was YES. [2024-10-24 23:41:48,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 428 events. 193/428 cut-off events. For 295/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1847 event pairs, 122 based on Foata normal form. 15/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 314 conditions per place. [2024-10-24 23:41:48,898 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 34 changer transitions 0/69 dead transitions. [2024-10-24 23:41:48,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 418 flow [2024-10-24 23:41:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:41:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:41:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 390 transitions. [2024-10-24 23:41:48,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-10-24 23:41:48,900 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 289 flow. Second operand 24 states and 390 transitions. [2024-10-24 23:41:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 418 flow [2024-10-24 23:41:48,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:48,904 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 385 flow [2024-10-24 23:41:48,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=385, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-10-24 23:41:48,905 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-24 23:41:48,906 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 385 flow [2024-10-24 23:41:48,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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) [2024-10-24 23:41:48,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:48,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:48,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:49,107 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,SelfDestructingSolverStorable6 [2024-10-24 23:41:49,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:49,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 485609145, now seen corresponding path program 1 times [2024-10-24 23:41:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461969547] [2024-10-24 23:41:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461969547] [2024-10-24 23:41:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461969547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635723041] [2024-10-24 23:41:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:49,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:49,225 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) [2024-10-24 23:41:49,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:41:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:49,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:49,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:49,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635723041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:49,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:41:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828075808] [2024-10-24 23:41:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:49,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:41:49,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:49,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-10-24 23:41:49,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:49,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:49,540 INFO L124 PetriNetUnfolderBase]: 259/558 cut-off events. [2024-10-24 23:41:49,541 INFO L125 PetriNetUnfolderBase]: For 336/371 co-relation queries the response was YES. [2024-10-24 23:41:49,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 558 events. 259/558 cut-off events. For 336/371 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2512 event pairs, 41 based on Foata normal form. 26/554 useless extension candidates. Maximal degree in co-relation 1454. Up to 174 conditions per place. [2024-10-24 23:41:49,546 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-10-24 23:41:49,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 701 flow [2024-10-24 23:41:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-24 23:41:49,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-24 23:41:49,548 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 385 flow. Second operand 6 states and 145 transitions. [2024-10-24 23:41:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 701 flow [2024-10-24 23:41:49,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 600 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-24 23:41:49,554 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 294 flow [2024-10-24 23:41:49,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-10-24 23:41:49,555 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-10-24 23:41:49,555 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 294 flow [2024-10-24 23:41:49,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-10-24 23:41:49,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:49,556 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:49,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:49,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:49,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:49,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2125985042, now seen corresponding path program 1 times [2024-10-24 23:41:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:49,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210108286] [2024-10-24 23:41:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:49,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:49,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210108286] [2024-10-24 23:41:49,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210108286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6065096] [2024-10-24 23:41:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:49,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:49,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:49,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:49,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:41:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:49,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:49,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:49,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:50,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6065096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:50,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:50,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:41:50,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661249125] [2024-10-24 23:41:50,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:50,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:41:50,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:50,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:41:50,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:41:50,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:50,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-10-24 23:41:50,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:50,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:50,343 INFO L124 PetriNetUnfolderBase]: 499/1012 cut-off events. [2024-10-24 23:41:50,344 INFO L125 PetriNetUnfolderBase]: For 855/925 co-relation queries the response was YES. [2024-10-24 23:41:50,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1012 events. 499/1012 cut-off events. For 855/925 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4596 event pairs, 113 based on Foata normal form. 66/1051 useless extension candidates. Maximal degree in co-relation 2777. Up to 374 conditions per place. [2024-10-24 23:41:50,353 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 129 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-10-24 23:41:50,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 153 transitions, 904 flow [2024-10-24 23:41:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-10-24 23:41:50,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-10-24 23:41:50,355 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 294 flow. Second operand 10 states and 247 transitions. [2024-10-24 23:41:50,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 153 transitions, 904 flow [2024-10-24 23:41:50,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 874 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-24 23:41:50,360 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 362 flow [2024-10-24 23:41:50,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-10-24 23:41:50,363 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-24 23:41:50,363 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 362 flow [2024-10-24 23:41:50,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-10-24 23:41:50,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:50,364 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:50,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:50,565 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:50,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1767712106, now seen corresponding path program 1 times [2024-10-24 23:41:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219845458] [2024-10-24 23:41:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:41:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219845458] [2024-10-24 23:41:50,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219845458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:50,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:50,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:41:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392489311] [2024-10-24 23:41:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:50,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:41:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:41:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:41:50,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-24 23:41:50,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 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) [2024-10-24 23:41:50,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:50,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-24 23:41:50,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:50,825 INFO L124 PetriNetUnfolderBase]: 419/1060 cut-off events. [2024-10-24 23:41:50,825 INFO L125 PetriNetUnfolderBase]: For 1070/1078 co-relation queries the response was YES. [2024-10-24 23:41:50,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1060 events. 419/1060 cut-off events. For 1070/1078 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5348 event pairs, 136 based on Foata normal form. 11/1059 useless extension candidates. Maximal degree in co-relation 2828. Up to 479 conditions per place. [2024-10-24 23:41:50,835 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 10 changer transitions 10/96 dead transitions. [2024-10-24 23:41:50,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 589 flow [2024-10-24 23:41:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-24 23:41:50,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-10-24 23:41:50,837 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 362 flow. Second operand 5 states and 134 transitions. [2024-10-24 23:41:50,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 589 flow [2024-10-24 23:41:50,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 574 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:50,842 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 393 flow [2024-10-24 23:41:50,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-24 23:41:50,843 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-10-24 23:41:50,845 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 393 flow [2024-10-24 23:41:50,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 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) [2024-10-24 23:41:50,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:50,845 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:41:50,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:41:50,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:50,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1541184979, now seen corresponding path program 1 times [2024-10-24 23:41:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130003068] [2024-10-24 23:41:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130003068] [2024-10-24 23:41:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130003068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212981180] [2024-10-24 23:41:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:51,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:51,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:41:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:51,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:41:51,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:51,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212981180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:51,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:41:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218739069] [2024-10-24 23:41:51,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:51,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:41:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:41:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:41:51,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:51,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 393 flow. Second operand has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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) [2024-10-24 23:41:51,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:51,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:51,974 INFO L124 PetriNetUnfolderBase]: 396/849 cut-off events. [2024-10-24 23:41:51,974 INFO L125 PetriNetUnfolderBase]: For 1598/1618 co-relation queries the response was YES. [2024-10-24 23:41:51,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 849 events. 396/849 cut-off events. For 1598/1618 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3969 event pairs, 239 based on Foata normal form. 14/782 useless extension candidates. Maximal degree in co-relation 2453. Up to 612 conditions per place. [2024-10-24 23:41:51,980 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 32 selfloop transitions, 72 changer transitions 0/120 dead transitions. [2024-10-24 23:41:51,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 832 flow [2024-10-24 23:41:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:41:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:41:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 463 transitions. [2024-10-24 23:41:51,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44519230769230766 [2024-10-24 23:41:51,983 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 393 flow. Second operand 26 states and 463 transitions. [2024-10-24 23:41:51,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 832 flow [2024-10-24 23:41:51,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 120 transitions, 811 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-24 23:41:51,988 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 799 flow [2024-10-24 23:41:51,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=799, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2024-10-24 23:41:51,989 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-10-24 23:41:51,989 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 799 flow [2024-10-24 23:41:51,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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) [2024-10-24 23:41:51,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:51,989 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:52,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:41:52,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 23:41:52,190 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:52,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 674859671, now seen corresponding path program 1 times [2024-10-24 23:41:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815186627] [2024-10-24 23:41:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815186627] [2024-10-24 23:41:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815186627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:52,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898678047] [2024-10-24 23:41:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:52,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:52,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:41:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:52,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:52,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898678047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:52,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:52,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:41:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318136616] [2024-10-24 23:41:52,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:52,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:41:52,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:52,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-24 23:41:52,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:52,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:52,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:52,649 INFO L124 PetriNetUnfolderBase]: 531/1107 cut-off events. [2024-10-24 23:41:52,650 INFO L125 PetriNetUnfolderBase]: For 1596/1613 co-relation queries the response was YES. [2024-10-24 23:41:52,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1107 events. 531/1107 cut-off events. For 1596/1613 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5402 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3351. Up to 365 conditions per place. [2024-10-24 23:41:52,658 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 157 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-10-24 23:41:52,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 177 transitions, 1431 flow [2024-10-24 23:41:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-10-24 23:41:52,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-10-24 23:41:52,659 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 799 flow. Second operand 6 states and 141 transitions. [2024-10-24 23:41:52,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 177 transitions, 1431 flow [2024-10-24 23:41:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1246 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-24 23:41:52,692 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 624 flow [2024-10-24 23:41:52,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-10-24 23:41:52,693 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-10-24 23:41:52,693 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 624 flow [2024-10-24 23:41:52,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-24 23:41:52,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:52,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:52,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:52,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:52,895 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:52,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -554186023, now seen corresponding path program 1 times [2024-10-24 23:41:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503274053] [2024-10-24 23:41:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503274053] [2024-10-24 23:41:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503274053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064977852] [2024-10-24 23:41:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:52,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:52,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:41:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:53,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:53,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:53,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064977852] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:53,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:41:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029893430] [2024-10-24 23:41:53,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:53,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:41:53,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:41:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:41:53,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:53,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 624 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2024-10-24 23:41:53,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:53,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:53,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:53,599 INFO L124 PetriNetUnfolderBase]: 1011/1970 cut-off events. [2024-10-24 23:41:53,600 INFO L125 PetriNetUnfolderBase]: For 3049/3102 co-relation queries the response was YES. [2024-10-24 23:41:53,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 1970 events. 1011/1970 cut-off events. For 3049/3102 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10015 event pairs, 187 based on Foata normal form. 75/2028 useless extension candidates. Maximal degree in co-relation 6132. Up to 745 conditions per place. [2024-10-24 23:41:53,614 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 219 selfloop transitions, 13 changer transitions 0/245 dead transitions. [2024-10-24 23:41:53,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 245 transitions, 1764 flow [2024-10-24 23:41:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-10-24 23:41:53,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-10-24 23:41:53,615 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 624 flow. Second operand 10 states and 239 transitions. [2024-10-24 23:41:53,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 245 transitions, 1764 flow [2024-10-24 23:41:53,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 245 transitions, 1734 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-24 23:41:53,624 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 692 flow [2024-10-24 23:41:53,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-10-24 23:41:53,626 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-10-24 23:41:53,626 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 692 flow [2024-10-24 23:41:53,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2024-10-24 23:41:53,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:53,626 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:53,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:41:53,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:53,830 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:53,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2093030102, now seen corresponding path program 1 times [2024-10-24 23:41:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330834628] [2024-10-24 23:41:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330834628] [2024-10-24 23:41:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330834628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124351639] [2024-10-24 23:41:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:54,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:54,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:54,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:41:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:54,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:41:54,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:54,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124351639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:54,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:54,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-24 23:41:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954579500] [2024-10-24 23:41:54,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:54,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:41:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:41:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-24 23:41:54,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 23:41:54,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 692 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-10-24 23:41:54,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:54,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 23:41:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:55,339 INFO L124 PetriNetUnfolderBase]: 2001/3791 cut-off events. [2024-10-24 23:41:55,339 INFO L125 PetriNetUnfolderBase]: For 8879/9001 co-relation queries the response was YES. [2024-10-24 23:41:55,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12261 conditions, 3791 events. 2001/3791 cut-off events. For 8879/9001 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20185 event pairs, 161 based on Foata normal form. 156/3939 useless extension candidates. Maximal degree in co-relation 12147. Up to 890 conditions per place. [2024-10-24 23:41:55,369 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 413 selfloop transitions, 31 changer transitions 0/457 dead transitions. [2024-10-24 23:41:55,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 457 transitions, 3480 flow [2024-10-24 23:41:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 23:41:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 23:41:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2024-10-24 23:41:55,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2024-10-24 23:41:55,371 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 692 flow. Second operand 22 states and 538 transitions. [2024-10-24 23:41:55,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 457 transitions, 3480 flow [2024-10-24 23:41:55,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 457 transitions, 3289 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:55,386 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 887 flow [2024-10-24 23:41:55,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=887, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-10-24 23:41:55,387 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-10-24 23:41:55,387 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 887 flow [2024-10-24 23:41:55,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-10-24 23:41:55,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:55,388 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:55,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:41:55,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 23:41:55,589 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:55,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 669608307, now seen corresponding path program 2 times [2024-10-24 23:41:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052110847] [2024-10-24 23:41:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052110847] [2024-10-24 23:41:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052110847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945130530] [2024-10-24 23:41:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:41:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:55,807 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:55,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:41:55,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:41:55,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:41:55,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:41:55,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 23:41:55,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 23:41:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945130530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:56,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:56,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-24 23:41:56,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288316704] [2024-10-24 23:41:56,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:56,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:41:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:41:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:41:56,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:56,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 887 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:56,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:56,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:56,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:57,129 INFO L124 PetriNetUnfolderBase]: 2952/4981 cut-off events. [2024-10-24 23:41:57,130 INFO L125 PetriNetUnfolderBase]: For 13966/14368 co-relation queries the response was YES. [2024-10-24 23:41:57,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17784 conditions, 4981 events. 2952/4981 cut-off events. For 13966/14368 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25712 event pairs, 234 based on Foata normal form. 98/5024 useless extension candidates. Maximal degree in co-relation 17663. Up to 1112 conditions per place. [2024-10-24 23:41:57,163 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 278 selfloop transitions, 21 changer transitions 156/473 dead transitions. [2024-10-24 23:41:57,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 473 transitions, 4307 flow [2024-10-24 23:41:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:41:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:41:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-10-24 23:41:57,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-24 23:41:57,165 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 887 flow. Second operand 15 states and 333 transitions. [2024-10-24 23:41:57,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 473 transitions, 4307 flow [2024-10-24 23:41:57,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 473 transitions, 3519 flow, removed 269 selfloop flow, removed 13 redundant places. [2024-10-24 23:41:57,188 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 810 flow [2024-10-24 23:41:57,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=810, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-10-24 23:41:57,191 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-10-24 23:41:57,191 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 810 flow [2024-10-24 23:41:57,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:57,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:57,192 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-24 23:41:57,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:57,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:41:57,393 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:57,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash 250954686, now seen corresponding path program 2 times [2024-10-24 23:41:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403855547] [2024-10-24 23:41:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403855547] [2024-10-24 23:41:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403855547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664402018] [2024-10-24 23:41:57,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:41:57,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:57,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:57,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:41:58,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:41:58,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:41:58,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:58,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:41:58,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:41:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664402018] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:58,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-24 23:41:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779397356] [2024-10-24 23:41:58,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:58,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 23:41:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 23:41:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-24 23:41:58,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:41:58,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 810 flow. Second operand has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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) [2024-10-24 23:41:58,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:58,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:41:58,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:59,383 INFO L124 PetriNetUnfolderBase]: 1410/3196 cut-off events. [2024-10-24 23:41:59,384 INFO L125 PetriNetUnfolderBase]: For 5731/5783 co-relation queries the response was YES. [2024-10-24 23:41:59,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 3196 events. 1410/3196 cut-off events. For 5731/5783 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19279 event pairs, 995 based on Foata normal form. 4/3152 useless extension candidates. Maximal degree in co-relation 10752. Up to 2107 conditions per place. [2024-10-24 23:41:59,408 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 34 selfloop transitions, 83 changer transitions 1/143 dead transitions. [2024-10-24 23:41:59,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 143 transitions, 1052 flow [2024-10-24 23:41:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 23:41:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-24 23:41:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 531 transitions. [2024-10-24 23:41:59,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282258064516129 [2024-10-24 23:41:59,411 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 810 flow. Second operand 31 states and 531 transitions. [2024-10-24 23:41:59,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 143 transitions, 1052 flow [2024-10-24 23:41:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 947 flow, removed 11 selfloop flow, removed 23 redundant places. [2024-10-24 23:41:59,423 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 870 flow [2024-10-24 23:41:59,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=870, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-10-24 23:41:59,424 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-10-24 23:41:59,424 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 870 flow [2024-10-24 23:41:59,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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) [2024-10-24 23:41:59,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:59,425 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:59,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:41:59,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 23:41:59,626 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-24 23:41:59,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:59,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1441886710, now seen corresponding path program 2 times [2024-10-24 23:41:59,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058385129] [2024-10-24 23:41:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:00,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058385129] [2024-10-24 23:42:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058385129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:00,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789604116] [2024-10-24 23:42:00,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:42:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:00,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:42:00,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:42:00,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:42:00,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:42:00,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-10-24 23:42:00,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-10-24 23:42:00,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789604116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:00,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:00,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 26 [2024-10-24 23:42:00,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743331715] [2024-10-24 23:42:00,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:00,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-24 23:42:00,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:00,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-24 23:42:00,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-10-24 23:42:00,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 23:42:00,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 870 flow. Second operand has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 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) [2024-10-24 23:42:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:00,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 23:42:00,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:01,508 INFO L124 PetriNetUnfolderBase]: 2890/5103 cut-off events. [2024-10-24 23:42:01,509 INFO L125 PetriNetUnfolderBase]: For 13965/14511 co-relation queries the response was YES. [2024-10-24 23:42:01,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 5103 events. 2890/5103 cut-off events. For 13965/14511 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28280 event pairs, 56 based on Foata normal form. 64/5152 useless extension candidates. Maximal degree in co-relation 15661. Up to 1000 conditions per place. [2024-10-24 23:42:01,525 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 599/599 dead transitions. [2024-10-24 23:42:01,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 599 transitions, 4292 flow [2024-10-24 23:42:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 23:42:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-24 23:42:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 613 transitions. [2024-10-24 23:42:01,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675925925925925 [2024-10-24 23:42:01,527 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 870 flow. Second operand 27 states and 613 transitions. [2024-10-24 23:42:01,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 599 transitions, 4292 flow [2024-10-24 23:42:01,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 599 transitions, 4021 flow, removed 52 selfloop flow, removed 37 redundant places. [2024-10-24 23:42:01,552 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2024-10-24 23:42:01,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2024-10-24 23:42:01,553 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-10-24 23:42:01,553 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2024-10-24 23:42:01,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 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) [2024-10-24 23:42:01,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-10-24 23:42:01,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-10-24 23:42:01,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-10-24 23:42:01,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-10-24 23:42:01,556 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-10-24 23:42:01,557 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-10-24 23:42:01,558 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-10-24 23:42:01,558 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-10-24 23:42:01,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 23:42:01,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 23:42:01,759 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:01,765 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 23:42:01,765 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 23:42:01,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:42:01 BasicIcfg [2024-10-24 23:42:01,770 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 23:42:01,771 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:42:01,771 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:42:01,771 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:42:01,771 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:45" (3/4) ... [2024-10-24 23:42:01,773 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 23:42:01,776 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 23:42:01,776 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 23:42:01,783 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2024-10-24 23:42:01,786 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-10-24 23:42:01,786 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-24 23:42:01,786 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 23:42:01,883 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 23:42:01,884 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 23:42:01,885 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:42:01,885 INFO L158 Benchmark]: Toolchain (without parser) took 17841.70ms. Allocated memory was 144.7MB in the beginning and 459.3MB in the end (delta: 314.6MB). Free memory was 92.4MB in the beginning and 208.0MB in the end (delta: -115.6MB). Peak memory consumption was 200.2MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,887 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:42:01,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.78ms. Allocated memory is still 144.7MB. Free memory was 92.4MB in the beginning and 78.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.35ms. Allocated memory is still 144.7MB. Free memory was 78.5MB in the beginning and 76.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,888 INFO L158 Benchmark]: Boogie Preprocessor took 45.65ms. Allocated memory is still 144.7MB. Free memory was 76.1MB in the beginning and 73.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,889 INFO L158 Benchmark]: RCFGBuilder took 989.63ms. Allocated memory was 144.7MB in the beginning and 211.8MB in the end (delta: 67.1MB). Free memory was 73.2MB in the beginning and 140.2MB in the end (delta: -66.9MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,889 INFO L158 Benchmark]: TraceAbstraction took 16305.20ms. Allocated memory was 211.8MB in the beginning and 459.3MB in the end (delta: 247.5MB). Free memory was 139.1MB in the beginning and 213.9MB in the end (delta: -74.8MB). Peak memory consumption was 174.3MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,889 INFO L158 Benchmark]: Witness Printer took 114.11ms. Allocated memory is still 459.3MB. Free memory was 213.9MB in the beginning and 208.0MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 23:42:01,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.78ms. Allocated memory is still 144.7MB. Free memory was 92.4MB in the beginning and 78.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.35ms. Allocated memory is still 144.7MB. Free memory was 78.5MB in the beginning and 76.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.65ms. Allocated memory is still 144.7MB. Free memory was 76.1MB in the beginning and 73.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 989.63ms. Allocated memory was 144.7MB in the beginning and 211.8MB in the end (delta: 67.1MB). Free memory was 73.2MB in the beginning and 140.2MB in the end (delta: -66.9MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16305.20ms. Allocated memory was 211.8MB in the beginning and 459.3MB in the end (delta: 247.5MB). Free memory was 139.1MB in the beginning and 213.9MB in the end (delta: -74.8MB). Peak memory consumption was 174.3MB. Max. memory is 16.1GB. * Witness Printer took 114.11ms. Allocated memory is still 459.3MB. Free memory was 213.9MB in the beginning and 208.0MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.2s, OverallIterations: 17, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1848 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1761 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 403 mSDsCounter, 215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3785 IncrementalHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 215 mSolverCounterUnsat, 19 mSDtfsCounter, 3785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=14, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 668 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 2396 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 37 InterpolantComputations, 8 PerfectInterpolantSequences, 1052/2149 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 23:42:01,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE