./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:10:58,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:10:58,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:10:59,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:10:59,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:10:59,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:10:59,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:10:59,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:10:59,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:10:59,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:10:59,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:10:59,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:10:59,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:10:59,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:10:59,032 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:10:59,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:10:59,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:10:59,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:10:59,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:10:59,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:10:59,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:10:59,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:10:59,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:10:59,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:10:59,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:10:59,036 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:10:59,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:10:59,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:10:59,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:10:59,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:10:59,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:10:59,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:10:59,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:10:59,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:10:59,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:10:59,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:10:59,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:10:59,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:10:59,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:10:59,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:10:59,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:10:59,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:10:59,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:10:59,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:10:59,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-19 14:10:59,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:10:59,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:10:59,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:10:59,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:10:59,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:10:59,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-19 14:11:00,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:11:00,655 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:11:00,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-19 14:11:00,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610afa27f/758c50be6486401c98a59b1b51fe2186/FLAG9e07000ae [2024-11-19 14:11:00,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610afa27f/758c50be6486401c98a59b1b51fe2186 [2024-11-19 14:11:00,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:11:00,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:11:00,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:11:00,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:11:00,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:11:00,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:11:00" (1/1) ... [2024-11-19 14:11:00,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a52ddf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:00, skipping insertion in model container [2024-11-19 14:11:00,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:11:00" (1/1) ... [2024-11-19 14:11:00,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:11:01,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:11:01,009 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:11:01,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:11:01,134 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:11:01,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01 WrapperNode [2024-11-19 14:11:01,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:11:01,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:11:01,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:11:01,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:11:01,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,167 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 91 [2024-11-19 14:11:01,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:11:01,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:11:01,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:11:01,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:11:01,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,192 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]. [2024-11-19 14:11:01,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:11:01,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:11:01,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:11:01,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:11:01,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (1/1) ... [2024-11-19 14:11:01,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:11:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:01,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:11:01,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 14:11:01,271 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 14:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 14:11:01,272 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 14:11:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:11:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:11:01,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:11:01,273 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:11:01,368 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:11:01,370 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:11:01,532 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:11:01,532 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:11:01,636 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:11:01,637 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 14:11:01,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:11:01 BoogieIcfgContainer [2024-11-19 14:11:01,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:11:01,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:11:01,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:11:01,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:11:01,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:11:00" (1/3) ... [2024-11-19 14:11:01,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223b98b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:11:01, skipping insertion in model container [2024-11-19 14:11:01,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:01" (2/3) ... [2024-11-19 14:11:01,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223b98b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:11:01, skipping insertion in model container [2024-11-19 14:11:01,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:11:01" (3/3) ... [2024-11-19 14:11:01,644 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-19 14:11:01,655 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:11:01,655 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 14:11:01,656 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:11:01,693 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:11:01,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-19 14:11:01,740 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-19 14:11:01,740 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:11:01,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 14:11:01,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-19 14:11:01,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-19 14:11:01,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:01,758 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;@844df9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:01,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-19 14:11:01,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:01,764 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 14:11:01,766 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:11:01,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:01,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:11:01,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:01,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash -218593543, now seen corresponding path program 1 times [2024-11-19 14:11:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209781417] [2024-11-19 14:11:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:01,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209781417] [2024-11-19 14:11:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209781417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:01,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:01,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:11:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680518083] [2024-11-19 14:11:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:01,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:02,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:02,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:02,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:02,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:02,086 INFO L124 PetriNetUnfolderBase]: 107/255 cut-off events. [2024-11-19 14:11:02,086 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 14:11:02,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 255 events. 107/255 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 82 based on Foata normal form. 11/211 useless extension candidates. Maximal degree in co-relation 418. Up to 184 conditions per place. [2024-11-19 14:11:02,090 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-19 14:11:02,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 95 flow [2024-11-19 14:11:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 14:11:02,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-19 14:11:02,100 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 52 transitions. [2024-11-19 14:11:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 95 flow [2024-11-19 14:11:02,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 90 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:11:02,103 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 58 flow [2024-11-19 14:11:02,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2024-11-19 14:11:02,108 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2024-11-19 14:11:02,109 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 58 flow [2024-11-19 14:11:02,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:02,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:02,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:11:02,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:02,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1813796197, now seen corresponding path program 1 times [2024-11-19 14:11:02,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:02,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197297992] [2024-11-19 14:11:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:02,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:02,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:02,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197297992] [2024-11-19 14:11:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197297992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:02,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664322822] [2024-11-19 14:11:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:02,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:02,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:02,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:02,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:02,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:02,324 INFO L124 PetriNetUnfolderBase]: 213/434 cut-off events. [2024-11-19 14:11:02,325 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:11:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 434 events. 213/434 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1930 event pairs, 118 based on Foata normal form. 14/363 useless extension candidates. Maximal degree in co-relation 819. Up to 253 conditions per place. [2024-11-19 14:11:02,328 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-19 14:11:02,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 48 transitions, 189 flow [2024-11-19 14:11:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-19 14:11:02,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2024-11-19 14:11:02,329 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 58 flow. Second operand 4 states and 87 transitions. [2024-11-19 14:11:02,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 48 transitions, 189 flow [2024-11-19 14:11:02,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:02,331 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 79 flow [2024-11-19 14:11:02,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-11-19 14:11:02,332 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-11-19 14:11:02,332 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 79 flow [2024-11-19 14:11:02,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:02,332 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:02,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:11:02,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:02,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -180752378, now seen corresponding path program 1 times [2024-11-19 14:11:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039583657] [2024-11-19 14:11:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039583657] [2024-11-19 14:11:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039583657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:02,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814478340] [2024-11-19 14:11:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:02,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:02,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:02,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:11:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:02,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:11:02,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:02,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:02,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814478340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:02,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:02,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2024-11-19 14:11:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609046013] [2024-11-19 14:11:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:02,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 14:11:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 14:11:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:11:02,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:11:02,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 79 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:02,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:11:02,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:02,955 INFO L124 PetriNetUnfolderBase]: 359/723 cut-off events. [2024-11-19 14:11:02,955 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-19 14:11:02,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 723 events. 359/723 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3694 event pairs, 56 based on Foata normal form. 24/668 useless extension candidates. Maximal degree in co-relation 1552. Up to 220 conditions per place. [2024-11-19 14:11:02,961 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 77 selfloop transitions, 14 changer transitions 8/104 dead transitions. [2024-11-19 14:11:02,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 104 transitions, 458 flow [2024-11-19 14:11:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 14:11:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 14:11:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-11-19 14:11:02,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-11-19 14:11:02,964 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 79 flow. Second operand 12 states and 183 transitions. [2024-11-19 14:11:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 104 transitions, 458 flow [2024-11-19 14:11:02,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 104 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:02,968 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 164 flow [2024-11-19 14:11:02,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=164, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-19 14:11:02,969 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-11-19 14:11:02,969 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 164 flow [2024-11-19 14:11:02,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:02,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:02,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:02,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:11:03,173 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 [2024-11-19 14:11:03,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1955500328, now seen corresponding path program 1 times [2024-11-19 14:11:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386878484] [2024-11-19 14:11:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:03,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386878484] [2024-11-19 14:11:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386878484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:03,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456710867] [2024-11-19 14:11:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:03,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:03,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:03,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:03,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:03,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:03,366 INFO L124 PetriNetUnfolderBase]: 596/1189 cut-off events. [2024-11-19 14:11:03,366 INFO L125 PetriNetUnfolderBase]: For 1025/1049 co-relation queries the response was YES. [2024-11-19 14:11:03,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 1189 events. 596/1189 cut-off events. For 1025/1049 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6742 event pairs, 326 based on Foata normal form. 59/1100 useless extension candidates. Maximal degree in co-relation 2807. Up to 729 conditions per place. [2024-11-19 14:11:03,372 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 55 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-19 14:11:03,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 448 flow [2024-11-19 14:11:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-19 14:11:03,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-19 14:11:03,374 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 164 flow. Second operand 4 states and 82 transitions. [2024-11-19 14:11:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 448 flow [2024-11-19 14:11:03,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:03,378 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 185 flow [2024-11-19 14:11:03,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-19 14:11:03,379 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-19 14:11:03,379 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 185 flow [2024-11-19 14:11:03,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:03,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:03,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:03,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:11:03,380 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:03,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 626438176, now seen corresponding path program 1 times [2024-11-19 14:11:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38205423] [2024-11-19 14:11:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38205423] [2024-11-19 14:11:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38205423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037351920] [2024-11-19 14:11:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:03,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:03,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:11:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:11:03,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:03,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:03,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037351920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:03,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:03,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:11:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102772613] [2024-11-19 14:11:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:03,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:11:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:11:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:11:03,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:03,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:03,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:03,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:03,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:03,658 INFO L124 PetriNetUnfolderBase]: 537/1056 cut-off events. [2024-11-19 14:11:03,658 INFO L125 PetriNetUnfolderBase]: For 1164/1202 co-relation queries the response was YES. [2024-11-19 14:11:03,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1056 events. 537/1056 cut-off events. For 1164/1202 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5732 event pairs, 71 based on Foata normal form. 57/1053 useless extension candidates. Maximal degree in co-relation 2854. Up to 250 conditions per place. [2024-11-19 14:11:03,663 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 80 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-19 14:11:03,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 677 flow [2024-11-19 14:11:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-19 14:11:03,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 14:11:03,665 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 185 flow. Second operand 6 states and 116 transitions. [2024-11-19 14:11:03,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 677 flow [2024-11-19 14:11:03,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 97 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:03,669 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 189 flow [2024-11-19 14:11:03,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-11-19 14:11:03,670 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-19 14:11:03,670 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 189 flow [2024-11-19 14:11:03,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:03,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:03,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:03,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:11:03,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:03,871 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2055252715, now seen corresponding path program 1 times [2024-11-19 14:11:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363701870] [2024-11-19 14:11:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363701870] [2024-11-19 14:11:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363701870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556310786] [2024-11-19 14:11:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:03,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:03,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:11:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:11:03,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:04,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556310786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:04,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:11:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819861107] [2024-11-19 14:11:04,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:04,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:11:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:11:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:11:04,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:04,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 189 flow. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:04,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:04,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:04,281 INFO L124 PetriNetUnfolderBase]: 1068/2123 cut-off events. [2024-11-19 14:11:04,281 INFO L125 PetriNetUnfolderBase]: For 2906/2990 co-relation queries the response was YES. [2024-11-19 14:11:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6022 conditions, 2123 events. 1068/2123 cut-off events. For 2906/2990 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12441 event pairs, 275 based on Foata normal form. 163/2270 useless extension candidates. Maximal degree in co-relation 6007. Up to 626 conditions per place. [2024-11-19 14:11:04,290 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 141 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2024-11-19 14:11:04,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 1181 flow [2024-11-19 14:11:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-19 14:11:04,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.621875 [2024-11-19 14:11:04,292 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 189 flow. Second operand 10 states and 199 transitions. [2024-11-19 14:11:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 1181 flow [2024-11-19 14:11:04,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 162 transitions, 1166 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:04,298 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 244 flow [2024-11-19 14:11:04,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2024-11-19 14:11:04,299 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2024-11-19 14:11:04,299 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 244 flow [2024-11-19 14:11:04,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:04,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:04,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:11:04,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:04,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:04,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1807070049, now seen corresponding path program 1 times [2024-11-19 14:11:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:04,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578390836] [2024-11-19 14:11:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:04,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:04,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:04,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578390836] [2024-11-19 14:11:04,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578390836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:04,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128152909] [2024-11-19 14:11:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:04,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:04,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:04,575 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) [2024-11-19 14:11:04,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:11:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:04,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:11:04,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:04,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:04,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128152909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:04,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:04,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:11:04,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381771591] [2024-11-19 14:11:04,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:04,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:11:04,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:11:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:11:04,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:04,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:04,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:04,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:04,837 INFO L124 PetriNetUnfolderBase]: 1057/2066 cut-off events. [2024-11-19 14:11:04,838 INFO L125 PetriNetUnfolderBase]: For 3454/3505 co-relation queries the response was YES. [2024-11-19 14:11:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 2066 events. 1057/2066 cut-off events. For 3454/3505 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12335 event pairs, 146 based on Foata normal form. 61/2080 useless extension candidates. Maximal degree in co-relation 6298. Up to 642 conditions per place. [2024-11-19 14:11:04,847 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 90 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-11-19 14:11:04,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 111 transitions, 815 flow [2024-11-19 14:11:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-19 14:11:04,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-19 14:11:04,848 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 244 flow. Second operand 6 states and 121 transitions. [2024-11-19 14:11:04,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 111 transitions, 815 flow [2024-11-19 14:11:04,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 765 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:04,859 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 250 flow [2024-11-19 14:11:04,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-11-19 14:11:04,860 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2024-11-19 14:11:04,860 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 250 flow [2024-11-19 14:11:04,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:04,860 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:04,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:11:05,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:05,062 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:05,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash -184596375, now seen corresponding path program 1 times [2024-11-19 14:11:05,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:05,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802377887] [2024-11-19 14:11:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:05,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802377887] [2024-11-19 14:11:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802377887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495400716] [2024-11-19 14:11:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:05,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:05,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:05,111 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) [2024-11-19 14:11:05,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:11:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:05,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:11:05,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:05,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495400716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:05,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:11:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470423926] [2024-11-19 14:11:05,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:05,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:11:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:11:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:11:05,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 14:11:05,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:05,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:05,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 14:11:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:05,554 INFO L124 PetriNetUnfolderBase]: 1537/2988 cut-off events. [2024-11-19 14:11:05,555 INFO L125 PetriNetUnfolderBase]: For 5328/5394 co-relation queries the response was YES. [2024-11-19 14:11:05,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 2988 events. 1537/2988 cut-off events. For 5328/5394 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 18314 event pairs, 345 based on Foata normal form. 125/3098 useless extension candidates. Maximal degree in co-relation 9259. Up to 610 conditions per place. [2024-11-19 14:11:05,620 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 150 selfloop transitions, 14 changer transitions 0/175 dead transitions. [2024-11-19 14:11:05,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 1276 flow [2024-11-19 14:11:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-19 14:11:05,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.621875 [2024-11-19 14:11:05,622 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 250 flow. Second operand 10 states and 199 transitions. [2024-11-19 14:11:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 1276 flow [2024-11-19 14:11:05,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 175 transitions, 1250 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:05,636 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 316 flow [2024-11-19 14:11:05,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2024-11-19 14:11:05,637 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2024-11-19 14:11:05,637 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 316 flow [2024-11-19 14:11:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:05,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:05,637 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:05,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:11:05,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:05,838 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:05,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:05,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1013004125, now seen corresponding path program 2 times [2024-11-19 14:11:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448422166] [2024-11-19 14:11:05,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:11:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:05,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:11:05,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:11:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448422166] [2024-11-19 14:11:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448422166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643095907] [2024-11-19 14:11:05,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:11:05,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:05,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:05,897 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) [2024-11-19 14:11:05,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:11:05,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:11:05,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:11:05,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 14:11:05,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:05,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643095907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:06,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:11:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175987373] [2024-11-19 14:11:06,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:06,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:11:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:11:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:11:06,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:11:06,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 316 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:06,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:06,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:11:06,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:06,490 INFO L124 PetriNetUnfolderBase]: 1827/3557 cut-off events. [2024-11-19 14:11:06,491 INFO L125 PetriNetUnfolderBase]: For 7681/7709 co-relation queries the response was YES. [2024-11-19 14:11:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11148 conditions, 3557 events. 1827/3557 cut-off events. For 7681/7709 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22496 event pairs, 139 based on Foata normal form. 67/3622 useless extension candidates. Maximal degree in co-relation 11128. Up to 1303 conditions per place. [2024-11-19 14:11:06,503 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 18 changer transitions 48/139 dead transitions. [2024-11-19 14:11:06,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 139 transitions, 1144 flow [2024-11-19 14:11:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-11-19 14:11:06,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-11-19 14:11:06,505 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 316 flow. Second operand 10 states and 147 transitions. [2024-11-19 14:11:06,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 139 transitions, 1144 flow [2024-11-19 14:11:06,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 139 transitions, 1053 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:06,521 INFO L231 Difference]: Finished difference. Result has 86 places, 60 transitions, 456 flow [2024-11-19 14:11:06,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2024-11-19 14:11:06,522 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-11-19 14:11:06,522 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 456 flow [2024-11-19 14:11:06,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:06,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:06,523 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:06,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:11:06,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:06,724 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:06,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1211665760, now seen corresponding path program 2 times [2024-11-19 14:11:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769088989] [2024-11-19 14:11:06,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:11:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:06,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:11:06,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:11:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769088989] [2024-11-19 14:11:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769088989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279842437] [2024-11-19 14:11:06,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:11:06,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:06,782 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) [2024-11-19 14:11:06,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:11:06,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:11:06,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:11:06,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 14:11:06,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:06,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:11:06,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279842437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:06,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:06,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:11:06,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970879101] [2024-11-19 14:11:06,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:06,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:11:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:11:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:11:06,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:11:06,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 456 flow. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:06,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:06,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:11:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:07,239 INFO L124 PetriNetUnfolderBase]: 1187/2350 cut-off events. [2024-11-19 14:11:07,239 INFO L125 PetriNetUnfolderBase]: For 7676/7679 co-relation queries the response was YES. [2024-11-19 14:11:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8651 conditions, 2350 events. 1187/2350 cut-off events. For 7676/7679 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 13423 event pairs, 127 based on Foata normal form. 34/2382 useless extension candidates. Maximal degree in co-relation 8623. Up to 992 conditions per place. [2024-11-19 14:11:07,249 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 3 changer transitions 64/99 dead transitions. [2024-11-19 14:11:07,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 930 flow [2024-11-19 14:11:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:11:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:11:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-11-19 14:11:07,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-11-19 14:11:07,251 INFO L175 Difference]: Start difference. First operand has 86 places, 60 transitions, 456 flow. Second operand 8 states and 109 transitions. [2024-11-19 14:11:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 930 flow [2024-11-19 14:11:07,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 889 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-19 14:11:07,261 INFO L231 Difference]: Finished difference. Result has 79 places, 32 transitions, 198 flow [2024-11-19 14:11:07,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=32} [2024-11-19 14:11:07,262 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2024-11-19 14:11:07,262 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 32 transitions, 198 flow [2024-11-19 14:11:07,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:07,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:07,263 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:07,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:11:07,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:07,463 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 14:11:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1799692566, now seen corresponding path program 1 times [2024-11-19 14:11:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340374747] [2024-11-19 14:11:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:11:07,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340374747] [2024-11-19 14:11:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340374747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437484417] [2024-11-19 14:11:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:07,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:07,558 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) [2024-11-19 14:11:07,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:11:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:07,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:11:07,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:11:07,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437484417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:07,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2024-11-19 14:11:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9406869] [2024-11-19 14:11:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:07,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 14:11:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 14:11:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-19 14:11:07,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-19 14:11:07,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 32 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:07,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:07,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-19 14:11:07,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:07,822 INFO L124 PetriNetUnfolderBase]: 75/169 cut-off events. [2024-11-19 14:11:07,822 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2024-11-19 14:11:07,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 169 events. 75/169 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 553 event pairs, 2 based on Foata normal form. 14/182 useless extension candidates. Maximal degree in co-relation 542. Up to 37 conditions per place. [2024-11-19 14:11:07,823 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-11-19 14:11:07,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 48 transitions, 309 flow [2024-11-19 14:11:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:11:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:11:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-11-19 14:11:07,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-11-19 14:11:07,824 INFO L175 Difference]: Start difference. First operand has 79 places, 32 transitions, 198 flow. Second operand 9 states and 109 transitions. [2024-11-19 14:11:07,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 48 transitions, 309 flow [2024-11-19 14:11:07,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 236 flow, removed 3 selfloop flow, removed 20 redundant places. [2024-11-19 14:11:07,825 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-11-19 14:11:07,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-11-19 14:11:07,825 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-11-19 14:11:07,826 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-11-19 14:11:07,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:07,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-19 14:11:07,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2024-11-19 14:11:07,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-19 14:11:07,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-19 14:11:07,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-19 14:11:07,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:11:08,030 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,SelfDestructingSolverStorable10 [2024-11-19 14:11:08,031 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:08,035 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:11:08,035 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:11:08,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:11:08 BasicIcfg [2024-11-19 14:11:08,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:11:08,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:11:08,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:11:08,039 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:11:08,039 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:11:01" (3/4) ... [2024-11-19 14:11:08,040 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:11:08,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-19 14:11:08,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-19 14:11:08,045 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-11-19 14:11:08,046 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-19 14:11:08,046 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 14:11:08,046 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 14:11:08,106 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:11:08,107 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:11:08,107 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:11:08,107 INFO L158 Benchmark]: Toolchain (without parser) took 7416.93ms. Allocated memory was 174.1MB in the beginning and 293.6MB in the end (delta: 119.5MB). Free memory was 106.7MB in the beginning and 119.5MB in the end (delta: -12.9MB). Peak memory consumption was 107.9MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,108 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 174.1MB. Free memory was 132.6MB in the beginning and 132.4MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:11:08,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.90ms. Allocated memory is still 174.1MB. Free memory was 106.5MB in the beginning and 139.4MB in the end (delta: -32.9MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.79ms. Allocated memory is still 174.1MB. Free memory was 139.4MB in the beginning and 137.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,108 INFO L158 Benchmark]: Boogie Preprocessor took 37.00ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,108 INFO L158 Benchmark]: RCFGBuilder took 432.19ms. Allocated memory is still 174.1MB. Free memory was 135.3MB in the beginning and 111.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,109 INFO L158 Benchmark]: TraceAbstraction took 6399.66ms. Allocated memory was 174.1MB in the beginning and 293.6MB in the end (delta: 119.5MB). Free memory was 110.8MB in the beginning and 123.7MB in the end (delta: -12.9MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,109 INFO L158 Benchmark]: Witness Printer took 68.27ms. Allocated memory is still 293.6MB. Free memory was 123.7MB in the beginning and 119.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 14:11:08,110 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 174.1MB. Free memory was 132.6MB in the beginning and 132.4MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.90ms. Allocated memory is still 174.1MB. Free memory was 106.5MB in the beginning and 139.4MB in the end (delta: -32.9MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.79ms. Allocated memory is still 174.1MB. Free memory was 139.4MB in the beginning and 137.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.00ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 432.19ms. Allocated memory is still 174.1MB. Free memory was 135.3MB in the beginning and 111.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6399.66ms. Allocated memory was 174.1MB in the beginning and 293.6MB in the end (delta: 119.5MB). Free memory was 110.8MB in the beginning and 123.7MB in the end (delta: -12.9MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. * Witness Printer took 68.27ms. Allocated memory is still 293.6MB. Free memory was 123.7MB in the beginning and 119.5MB 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: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: 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, 55 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: 6.3s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 902 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 847 mSDsluCounter, 481 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 437 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1980 IncrementalHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 44 mSDtfsCounter, 1980 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=9, InterpolantAutomatonStates: 82, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 320 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 32 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 190/270 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 14:11:08,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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