./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix031.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix031.opt.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 526111e98fa506d5405af18114114ae6aa9ce1a2e8442e7719052c05a249c119 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:50:57,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:50:58,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:50:58,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:50:58,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:50:58,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:50:58,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:50:58,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:50:58,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:50:58,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:50:58,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:50:58,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:50:58,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:50:58,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:50:58,120 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:50:58,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:50:58,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:50:58,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:50:58,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:50:58,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:50:58,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:50:58,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:50:58,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:50:58,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:50:58,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:50:58,133 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:50:58,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:50:58,134 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:50:58,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:50:58,134 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:50:58,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:50:58,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:50:58,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:50:58,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:50:58,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:50:58,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:50:58,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:50:58,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:50:58,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:50:58,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:50:58,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:50:58,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:50:58,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:50:58,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:50:58,147 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526111e98fa506d5405af18114114ae6aa9ce1a2e8442e7719052c05a249c119 [2024-10-11 23:50:58,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:50:58,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:50:58,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:50:58,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:50:58,541 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:50:58,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix031.opt.i [2024-10-11 23:51:00,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:51:00,271 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:51:00,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix031.opt.i [2024-10-11 23:51:00,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5f3f4190b/6240324bf3c644829929d16001a02ea8/FLAGd9dd686c3 [2024-10-11 23:51:00,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5f3f4190b/6240324bf3c644829929d16001a02ea8 [2024-10-11 23:51:00,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:51:00,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:51:00,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:51:00,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:51:00,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:51:00,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eccb845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00, skipping insertion in model container [2024-10-11 23:51:00,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:51:00,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:51:00,619 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:51:00,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:51:00,701 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:51:00,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00 WrapperNode [2024-10-11 23:51:00,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:51:00,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:51:00,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:51:00,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:51:00,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,744 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 120 [2024-10-11 23:51:00,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:51:00,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:51:00,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:51:00,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:51:00,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,821 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 23:51:00,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:51:00,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:51:00,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:51:00,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:51:00,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (1/1) ... [2024-10-11 23:51:00,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:51:00,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:51:00,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:51:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:51:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 23:51:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:51:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 23:51:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 23:51:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 23:51:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 23:51:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:51:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 23:51:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:51:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:51:00,930 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:51:01,023 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:51:01,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:51:01,234 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:51:01,234 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:51:01,393 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:51:01,393 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 23:51:01,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:51:01 BoogieIcfgContainer [2024-10-11 23:51:01,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:51:01,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:51:01,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:51:01,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:51:01,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:51:00" (1/3) ... [2024-10-11 23:51:01,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21472d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:51:01, skipping insertion in model container [2024-10-11 23:51:01,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:51:00" (2/3) ... [2024-10-11 23:51:01,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21472d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:51:01, skipping insertion in model container [2024-10-11 23:51:01,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:51:01" (3/3) ... [2024-10-11 23:51:01,403 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-10-11 23:51:01,416 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:51:01,417 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 23:51:01,417 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:51:01,458 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:51:01,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-10-11 23:51:01,543 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-11 23:51:01,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:51:01,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-10-11 23:51:01,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-10-11 23:51:01,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 66 flow [2024-10-11 23:51:01,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:51:01,591 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;@1af8a021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:51:01,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 23:51:01,604 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:51:01,608 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-10-11 23:51:01,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:51:01,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:51:01,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:51:01,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-11 23:51:01,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:51:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1049426392, now seen corresponding path program 1 times [2024-10-11 23:51:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:51:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329642226] [2024-10-11 23:51:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:51:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:51:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:51:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:51:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:51:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329642226] [2024-10-11 23:51:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329642226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:51:02,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:51:02,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:51:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988405868] [2024-10-11 23:51:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:51:02,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:51:02,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:51:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:51:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:51:02,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-10-11 23:51:02,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:51:02,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-10-11 23:51:02,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:51:02,216 INFO L124 PetriNetUnfolderBase]: 194/368 cut-off events. [2024-10-11 23:51:02,218 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:51:02,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 368 events. 194/368 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1728 event pairs, 62 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 715. Up to 277 conditions per place. [2024-10-11 23:51:02,225 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 25 selfloop transitions, 3 changer transitions 2/41 dead transitions. [2024-10-11 23:51:02,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 151 flow [2024-10-11 23:51:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:51:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:51:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-11 23:51:02,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-10-11 23:51:02,237 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-10-11 23:51:02,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 151 flow [2024-10-11 23:51:02,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:51:02,241 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 81 flow [2024-10-11 23:51:02,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-11 23:51:02,246 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-11 23:51:02,246 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 81 flow [2024-10-11 23:51:02,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:51:02,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:51:02,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:51:02,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-11 23:51:02,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:51:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 189002264, now seen corresponding path program 1 times [2024-10-11 23:51:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:51:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026161874] [2024-10-11 23:51:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:51:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:51:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:51:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:51:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:51:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026161874] [2024-10-11 23:51:02,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026161874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:51:02,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:51:02,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:51:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559974601] [2024-10-11 23:51:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:51:02,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:51:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:51:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:51:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:51:02,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-10-11 23:51:02,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:51:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-10-11 23:51:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:51:02,506 INFO L124 PetriNetUnfolderBase]: 132/266 cut-off events. [2024-10-11 23:51:02,506 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-11 23:51:02,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 266 events. 132/266 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1278 event pairs, 42 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 585. Up to 174 conditions per place. [2024-10-11 23:51:02,512 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-10-11 23:51:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 145 flow [2024-10-11 23:51:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:51:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:51:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-11 23:51:02,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 23:51:02,514 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 81 flow. Second operand 4 states and 80 transitions. [2024-10-11 23:51:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 145 flow [2024-10-11 23:51:02,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:51:02,515 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 76 flow [2024-10-11 23:51:02,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-10-11 23:51:02,516 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-11 23:51:02,516 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 76 flow [2024-10-11 23:51:02,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:51:02,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:51:02,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:51:02,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-11 23:51:02,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:51:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2004019765, now seen corresponding path program 1 times [2024-10-11 23:51:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:51:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888114024] [2024-10-11 23:51:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:51:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:51:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:51:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:51:02,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:51:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888114024] [2024-10-11 23:51:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888114024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:51:02,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:51:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:51:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976929157] [2024-10-11 23:51:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:51:02,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:51:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:51:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:51:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:51:02,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-10-11 23:51:02,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:51:02,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-10-11 23:51:02,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:51:02,789 INFO L124 PetriNetUnfolderBase]: 106/220 cut-off events. [2024-10-11 23:51:02,789 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-11 23:51:02,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 220 events. 106/220 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1080 event pairs, 32 based on Foata normal form. 20/231 useless extension candidates. Maximal degree in co-relation 473. Up to 128 conditions per place. [2024-10-11 23:51:02,791 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-10-11 23:51:02,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 136 flow [2024-10-11 23:51:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:51:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:51:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-11 23:51:02,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:51:02,793 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 76 flow. Second operand 4 states and 78 transitions. [2024-10-11 23:51:02,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 136 flow [2024-10-11 23:51:02,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:51:02,793 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-10-11 23:51:02,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-10-11 23:51:02,794 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-10-11 23:51:02,794 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-10-11 23:51:02,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:51:02,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-10-11 23:51:02,798 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-10-11 23:51:02,798 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-10-11 23:51:02,798 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-10-11 23:51:02,799 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2024-10-11 23:51:02,799 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2024-10-11 23:51:02,799 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-10-11 23:51:02,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-10-11 23:51:02,801 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-10-11 23:51:02,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-10-11 23:51:02,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:51:02,803 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 23:51:02,808 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 23:51:02,808 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 23:51:02,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 11:51:02 BasicIcfg [2024-10-11 23:51:02,812 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 23:51:02,812 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 23:51:02,812 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 23:51:02,813 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 23:51:02,813 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:51:01" (3/4) ... [2024-10-11 23:51:02,814 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 23:51:02,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-11 23:51:02,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-11 23:51:02,819 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-10-11 23:51:02,819 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-11 23:51:02,820 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 23:51:02,820 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 23:51:02,876 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 23:51:02,876 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 23:51:02,876 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 23:51:02,877 INFO L158 Benchmark]: Toolchain (without parser) took 2579.36ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 84.6MB in the beginning and 164.7MB in the end (delta: -80.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 23:51:02,877 INFO L158 Benchmark]: CDTParser took 3.84ms. Allocated memory is still 159.4MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 23:51:02,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.57ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 59.9MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.52ms. Allocated memory is still 159.4MB. Free memory was 59.9MB in the beginning and 57.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,878 INFO L158 Benchmark]: Boogie Preprocessor took 93.92ms. Allocated memory is still 159.4MB. Free memory was 57.3MB in the beginning and 125.9MB in the end (delta: -68.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,878 INFO L158 Benchmark]: RCFGBuilder took 554.01ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 125.8MB in the beginning and 150.4MB in the end (delta: -24.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,878 INFO L158 Benchmark]: TraceAbstraction took 1416.33ms. Allocated memory is still 226.5MB. Free memory was 149.4MB in the beginning and 170.0MB in the end (delta: -20.6MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,878 INFO L158 Benchmark]: Witness Printer took 64.12ms. Allocated memory is still 226.5MB. Free memory was 168.9MB in the beginning and 164.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 23:51:02,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.84ms. Allocated memory is still 159.4MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.57ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 59.9MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.52ms. Allocated memory is still 159.4MB. Free memory was 59.9MB in the beginning and 57.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.92ms. Allocated memory is still 159.4MB. Free memory was 57.3MB in the beginning and 125.9MB in the end (delta: -68.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * RCFGBuilder took 554.01ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 125.8MB in the beginning and 150.4MB in the end (delta: -24.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1416.33ms. Allocated memory is still 226.5MB. Free memory was 149.4MB in the beginning and 170.0MB in the end (delta: -20.6MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. * Witness Printer took 64.12ms. Allocated memory is still 226.5MB. Free memory was 168.9MB in the beginning and 164.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 774]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 774]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 808]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 808]: 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, 10 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: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=1, InterpolantAutomatonStates: 11, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 23:51:02,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE