./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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/weaver/clever.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:52:45,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:52:45,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:52:45,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:52:45,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:52:45,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:52:45,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:52:45,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:52:45,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:52:45,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:52:45,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:52:45,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:52:45,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:52:45,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:52:45,153 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:52:45,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:52:45,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:52:45,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:52:45,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:52:45,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:52:45,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:52:45,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:52:45,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:52:45,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:52:45,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:52:45,157 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:52:45,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:52:45,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:52:45,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:52:45,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:52:45,159 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:52:45,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:52:45,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:52:45,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:52:45,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:45,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:52:45,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:52:45,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:52:45,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:52:45,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:52:45,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:52:45,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:52:45,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:52:45,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:52:45,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-11-17 07:52:45,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:52:45,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:52:45,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:52:45,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:52:45,517 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:52:45,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2024-11-17 07:52:46,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:52:47,109 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:52:47,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2024-11-17 07:52:47,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10072d431/1fabe75b6457420ea77abe6131e081a2/FLAG5c60a1e20 [2024-11-17 07:52:47,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10072d431/1fabe75b6457420ea77abe6131e081a2 [2024-11-17 07:52:47,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:52:47,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:52:47,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:47,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:52:47,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:52:47,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df33ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47, skipping insertion in model container [2024-11-17 07:52:47,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:52:47,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:47,449 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:52:47,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:47,497 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:52:47,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47 WrapperNode [2024-11-17 07:52:47,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:47,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:47,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:52:47,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:52:47,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,539 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-17 07:52:47,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:47,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:52:47,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:52:47,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:52:47,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,573 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]. [2024-11-17 07:52:47,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,577 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:52:47,589 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:52:47,589 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:52:47,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:52:47,591 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:47,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:47,626 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) [2024-11-17 07:52:47,629 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 [2024-11-17 07:52:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:52:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:52:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:52:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:52:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:52:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:52:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:52:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:52:47,676 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:52:47,768 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:52:47,770 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:52:47,984 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:52:47,984 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:52:48,177 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:52:48,177 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:52:48,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:48 BoogieIcfgContainer [2024-11-17 07:52:48,178 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:52:48,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:52:48,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:52:48,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:52:48,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:52:47" (1/3) ... [2024-11-17 07:52:48,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb302ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:48, skipping insertion in model container [2024-11-17 07:52:48,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (2/3) ... [2024-11-17 07:52:48,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb302ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:48, skipping insertion in model container [2024-11-17 07:52:48,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:48" (3/3) ... [2024-11-17 07:52:48,190 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-11-17 07:52:48,203 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:52:48,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 07:52:48,203 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:52:48,249 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:52:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 92 flow [2024-11-17 07:52:48,322 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-11-17 07:52:48,322 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:52:48,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 37 events. 6/37 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-17 07:52:48,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 92 flow [2024-11-17 07:52:48,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 79 flow [2024-11-17 07:52:48,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:52:48,354 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;@4600ffc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:52:48,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-17 07:52:48,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:52:48,366 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-17 07:52:48,366 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:52:48,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:48,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:48,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:48,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1041114521, now seen corresponding path program 1 times [2024-11-17 07:52:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:48,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397258322] [2024-11-17 07:52:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:48,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:48,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397258322] [2024-11-17 07:52:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397258322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:48,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378783098] [2024-11-17 07:52:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:48,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:48,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-17 07:52:48,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-11-17 07:52:48,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:48,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-17 07:52:48,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:48,973 INFO L124 PetriNetUnfolderBase]: 194/456 cut-off events. [2024-11-17 07:52:48,973 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 07:52:48,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 456 events. 194/456 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2536 event pairs, 67 based on Foata normal form. 97/490 useless extension candidates. Maximal degree in co-relation 744. Up to 177 conditions per place. [2024-11-17 07:52:48,983 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 31 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-17 07:52:48,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 186 flow [2024-11-17 07:52:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-17 07:52:48,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-11-17 07:52:48,998 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 79 flow. Second operand 4 states and 115 transitions. [2024-11-17 07:52:48,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 186 flow [2024-11-17 07:52:49,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:49,003 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 96 flow [2024-11-17 07:52:49,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-17 07:52:49,011 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-17 07:52:49,012 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 96 flow [2024-11-17 07:52:49,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-11-17 07:52:49,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:52:49,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:49,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 782065887, now seen corresponding path program 1 times [2024-11-17 07:52:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193077314] [2024-11-17 07:52:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193077314] [2024-11-17 07:52:49,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193077314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679842646] [2024-11-17 07:52:49,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:49,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:49,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-17 07:52:49,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-11-17 07:52:49,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-17 07:52:49,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,253 INFO L124 PetriNetUnfolderBase]: 188/385 cut-off events. [2024-11-17 07:52:49,253 INFO L125 PetriNetUnfolderBase]: For 168/185 co-relation queries the response was YES. [2024-11-17 07:52:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 385 events. 188/385 cut-off events. For 168/185 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1956 event pairs, 60 based on Foata normal form. 20/340 useless extension candidates. Maximal degree in co-relation 410. Up to 176 conditions per place. [2024-11-17 07:52:49,259 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 25 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-17 07:52:49,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 189 flow [2024-11-17 07:52:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-17 07:52:49,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-11-17 07:52:49,263 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 96 flow. Second operand 4 states and 95 transitions. [2024-11-17 07:52:49,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 189 flow [2024-11-17 07:52:49,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 189 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:49,267 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 100 flow [2024-11-17 07:52:49,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-17 07:52:49,268 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-17 07:52:49,268 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 100 flow [2024-11-17 07:52:49,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-11-17 07:52:49,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:52:49,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:49,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1525761016, now seen corresponding path program 1 times [2024-11-17 07:52:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450108224] [2024-11-17 07:52:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450108224] [2024-11-17 07:52:49,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450108224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741168427] [2024-11-17 07:52:49,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:49,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:49,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-17 07:52:49,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-11-17 07:52:49,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-17 07:52:49,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,474 INFO L124 PetriNetUnfolderBase]: 268/556 cut-off events. [2024-11-17 07:52:49,475 INFO L125 PetriNetUnfolderBase]: For 327/354 co-relation queries the response was YES. [2024-11-17 07:52:49,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 556 events. 268/556 cut-off events. For 327/354 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3129 event pairs, 50 based on Foata normal form. 20/533 useless extension candidates. Maximal degree in co-relation 632. Up to 241 conditions per place. [2024-11-17 07:52:49,496 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 38 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-11-17 07:52:49,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 270 flow [2024-11-17 07:52:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-17 07:52:49,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-17 07:52:49,499 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 100 flow. Second operand 4 states and 105 transitions. [2024-11-17 07:52:49,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 270 flow [2024-11-17 07:52:49,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:49,502 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 114 flow [2024-11-17 07:52:49,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-11-17 07:52:49,503 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-11-17 07:52:49,503 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 114 flow [2024-11-17 07:52:49,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-11-17 07:52:49,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:52:49,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:49,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2085188959, now seen corresponding path program 1 times [2024-11-17 07:52:49,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552877900] [2024-11-17 07:52:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552877900] [2024-11-17 07:52:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552877900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676327080] [2024-11-17 07:52:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:49,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-17 07:52:49,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-17 07:52:49,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,687 INFO L124 PetriNetUnfolderBase]: 313/622 cut-off events. [2024-11-17 07:52:49,688 INFO L125 PetriNetUnfolderBase]: For 375/406 co-relation queries the response was YES. [2024-11-17 07:52:49,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 622 events. 313/622 cut-off events. For 375/406 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3501 event pairs, 158 based on Foata normal form. 28/545 useless extension candidates. Maximal degree in co-relation 748. Up to 371 conditions per place. [2024-11-17 07:52:49,692 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 26 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-17 07:52:49,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 199 flow [2024-11-17 07:52:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-17 07:52:49,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 07:52:49,694 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 114 flow. Second operand 4 states and 91 transitions. [2024-11-17 07:52:49,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 199 flow [2024-11-17 07:52:49,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:49,696 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 116 flow [2024-11-17 07:52:49,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-17 07:52:49,698 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2024-11-17 07:52:49,698 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 116 flow [2024-11-17 07:52:49,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:52:49,700 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:49,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash -216348036, now seen corresponding path program 1 times [2024-11-17 07:52:49,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874869517] [2024-11-17 07:52:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874869517] [2024-11-17 07:52:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874869517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:49,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585218418] [2024-11-17 07:52:49,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:49,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:49,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:49,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-17 07:52:49,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-17 07:52:49,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,935 INFO L124 PetriNetUnfolderBase]: 475/1057 cut-off events. [2024-11-17 07:52:49,936 INFO L125 PetriNetUnfolderBase]: For 692/745 co-relation queries the response was YES. [2024-11-17 07:52:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1057 events. 475/1057 cut-off events. For 692/745 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6828 event pairs, 100 based on Foata normal form. 28/1034 useless extension candidates. Maximal degree in co-relation 1312. Up to 489 conditions per place. [2024-11-17 07:52:49,943 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-17 07:52:49,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 303 flow [2024-11-17 07:52:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-17 07:52:49,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:52:49,946 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 116 flow. Second operand 4 states and 104 transitions. [2024-11-17 07:52:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 303 flow [2024-11-17 07:52:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:49,950 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 130 flow [2024-11-17 07:52:49,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-17 07:52:49,952 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-17 07:52:49,952 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 130 flow [2024-11-17 07:52:49,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,953 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:52:49,954 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:49,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1722392079, now seen corresponding path program 1 times [2024-11-17 07:52:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631874237] [2024-11-17 07:52:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:50,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631874237] [2024-11-17 07:52:50,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631874237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847775966] [2024-11-17 07:52:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:50,060 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) [2024-11-17 07:52:50,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:52:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:50,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:50,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:50,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847775966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:50,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:52:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:52:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21350415] [2024-11-17 07:52:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:50,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:50,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:50,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:52:50,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-17 07:52:50,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:50,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:50,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-17 07:52:50,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:50,383 INFO L124 PetriNetUnfolderBase]: 395/977 cut-off events. [2024-11-17 07:52:50,383 INFO L125 PetriNetUnfolderBase]: For 614/644 co-relation queries the response was YES. [2024-11-17 07:52:50,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 977 events. 395/977 cut-off events. For 614/644 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6432 event pairs, 42 based on Foata normal form. 28/950 useless extension candidates. Maximal degree in co-relation 1888. Up to 190 conditions per place. [2024-11-17 07:52:50,390 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 54 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-17 07:52:50,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 383 flow [2024-11-17 07:52:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-11-17 07:52:50,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6709401709401709 [2024-11-17 07:52:50,391 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 130 flow. Second operand 6 states and 157 transitions. [2024-11-17 07:52:50,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 383 flow [2024-11-17 07:52:50,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:50,395 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 142 flow [2024-11-17 07:52:50,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2024-11-17 07:52:50,396 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-11-17 07:52:50,396 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 142 flow [2024-11-17 07:52:50,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:50,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:50,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:50,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:50,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 07:52:50,601 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:50,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash -933860562, now seen corresponding path program 1 times [2024-11-17 07:52:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:50,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935107946] [2024-11-17 07:52:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:50,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:50,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935107946] [2024-11-17 07:52:50,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935107946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:50,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745521145] [2024-11-17 07:52:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:50,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:50,677 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) [2024-11-17 07:52:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:52:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:50,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:52:50,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:52:50,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:52:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745521145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:50,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2024-11-17 07:52:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740661118] [2024-11-17 07:52:50,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:50,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:52:50,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:52:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:52:50,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-17 07:52:50,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 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) [2024-11-17 07:52:50,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:50,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-17 07:52:50,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:51,069 INFO L124 PetriNetUnfolderBase]: 673/1288 cut-off events. [2024-11-17 07:52:51,070 INFO L125 PetriNetUnfolderBase]: For 1658/1788 co-relation queries the response was YES. [2024-11-17 07:52:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 1288 events. 673/1288 cut-off events. For 1658/1788 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7977 event pairs, 125 based on Foata normal form. 44/1273 useless extension candidates. Maximal degree in co-relation 1475. Up to 287 conditions per place. [2024-11-17 07:52:51,077 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 69 selfloop transitions, 7 changer transitions 12/102 dead transitions. [2024-11-17 07:52:51,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 102 transitions, 645 flow [2024-11-17 07:52:51,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:52:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:52:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-11-17 07:52:51,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-11-17 07:52:51,079 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 142 flow. Second operand 8 states and 196 transitions. [2024-11-17 07:52:51,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 102 transitions, 645 flow [2024-11-17 07:52:51,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 102 transitions, 567 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-17 07:52:51,082 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 142 flow [2024-11-17 07:52:51,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2024-11-17 07:52:51,083 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2024-11-17 07:52:51,083 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 142 flow [2024-11-17 07:52:51,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 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) [2024-11-17 07:52:51,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:51,084 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:51,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:52:51,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-17 07:52:51,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:51,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1854546646, now seen corresponding path program 1 times [2024-11-17 07:52:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125247526] [2024-11-17 07:52:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125247526] [2024-11-17 07:52:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125247526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978191146] [2024-11-17 07:52:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:51,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:51,363 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) [2024-11-17 07:52:51,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:52:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:51,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:51,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:51,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978191146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:51,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:52:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598097684] [2024-11-17 07:52:51,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:51,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:52:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:52:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:52:51,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-17 07:52:51,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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) [2024-11-17 07:52:51,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:51,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-17 07:52:51,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:51,896 INFO L124 PetriNetUnfolderBase]: 1013/2710 cut-off events. [2024-11-17 07:52:51,896 INFO L125 PetriNetUnfolderBase]: For 2617/2648 co-relation queries the response was YES. [2024-11-17 07:52:51,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 2710 events. 1013/2710 cut-off events. For 2617/2648 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21718 event pairs, 197 based on Foata normal form. 136/2759 useless extension candidates. Maximal degree in co-relation 4699. Up to 435 conditions per place. [2024-11-17 07:52:51,915 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 106 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2024-11-17 07:52:51,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 133 transitions, 841 flow [2024-11-17 07:52:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:52:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:52:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-11-17 07:52:51,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:52:51,917 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 142 flow. Second operand 10 states and 260 transitions. [2024-11-17 07:52:51,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 133 transitions, 841 flow [2024-11-17 07:52:51,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 712 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:51,927 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 212 flow [2024-11-17 07:52:51,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-17 07:52:51,929 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-17 07:52:51,930 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 212 flow [2024-11-17 07:52:51,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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) [2024-11-17 07:52:51,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:51,931 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:52:51,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:52,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:52,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:52,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash -520061769, now seen corresponding path program 1 times [2024-11-17 07:52:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674094074] [2024-11-17 07:52:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674094074] [2024-11-17 07:52:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674094074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:52,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391642369] [2024-11-17 07:52:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:52,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:52,219 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) [2024-11-17 07:52:52,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:52:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:52:52,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:52:52,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:52:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391642369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:52,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:52,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-11-17 07:52:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614266067] [2024-11-17 07:52:52,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:52,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:52:52,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:52:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:52:52,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-17 07:52:52,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 212 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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) [2024-11-17 07:52:52,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:52,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-17 07:52:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:52,958 INFO L124 PetriNetUnfolderBase]: 2534/5453 cut-off events. [2024-11-17 07:52:52,958 INFO L125 PetriNetUnfolderBase]: For 6247/6264 co-relation queries the response was YES. [2024-11-17 07:52:52,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14003 conditions, 5453 events. 2534/5453 cut-off events. For 6247/6264 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 43833 event pairs, 305 based on Foata normal form. 0/5321 useless extension candidates. Maximal degree in co-relation 10238. Up to 1180 conditions per place. [2024-11-17 07:52:52,992 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 112 selfloop transitions, 12 changer transitions 4/139 dead transitions. [2024-11-17 07:52:52,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 139 transitions, 900 flow [2024-11-17 07:52:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:52:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:52:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-11-17 07:52:52,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982905982905983 [2024-11-17 07:52:52,994 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 212 flow. Second operand 9 states and 210 transitions. [2024-11-17 07:52:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 139 transitions, 900 flow [2024-11-17 07:52:53,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 139 transitions, 860 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:53,008 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 268 flow [2024-11-17 07:52:53,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-11-17 07:52:53,009 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-17 07:52:53,009 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 268 flow [2024-11-17 07:52:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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) [2024-11-17 07:52:53,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:53,010 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:53,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:53,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:53,215 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-17 07:52:53,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -624013022, now seen corresponding path program 2 times [2024-11-17 07:52:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803640599] [2024-11-17 07:52:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:53,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803640599] [2024-11-17 07:52:53,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803640599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146223101] [2024-11-17 07:52:53,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:52:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:53,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:53,390 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) [2024-11-17 07:52:53,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:52:53,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:52:53,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:52:53,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:52:53,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:52:53,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:52:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146223101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:53,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2024-11-17 07:52:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993760334] [2024-11-17 07:52:53,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:53,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:52:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:52:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:52:53,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-17 07:52:53,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 268 flow. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 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) [2024-11-17 07:52:53,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:53,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-17 07:52:53,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:54,349 INFO L124 PetriNetUnfolderBase]: 2478/5624 cut-off events. [2024-11-17 07:52:54,350 INFO L125 PetriNetUnfolderBase]: For 9126/9126 co-relation queries the response was YES. [2024-11-17 07:52:54,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14955 conditions, 5624 events. 2478/5624 cut-off events. For 9126/9126 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 45679 event pairs, 245 based on Foata normal form. 120/5637 useless extension candidates. Maximal degree in co-relation 11946. Up to 761 conditions per place. [2024-11-17 07:52:54,366 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 183/183 dead transitions. [2024-11-17 07:52:54,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 183 transitions, 1110 flow [2024-11-17 07:52:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 07:52:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 07:52:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 344 transitions. [2024-11-17 07:52:54,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63003663003663 [2024-11-17 07:52:54,370 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 268 flow. Second operand 14 states and 344 transitions. [2024-11-17 07:52:54,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 183 transitions, 1110 flow [2024-11-17 07:52:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 183 transitions, 1051 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-17 07:52:54,390 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-11-17 07:52:54,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-11-17 07:52:54,392 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2024-11-17 07:52:54,392 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-11-17 07:52:54,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 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) [2024-11-17 07:52:54,395 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-17 07:52:54,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-17 07:52:54,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-17 07:52:54,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-17 07:52:54,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-17 07:52:54,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-17 07:52:54,400 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-17 07:52:54,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:54,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 07:52:54,601 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:54,607 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 07:52:54,607 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 07:52:54,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 07:52:54 BasicIcfg [2024-11-17 07:52:54,611 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 07:52:54,612 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 07:52:54,612 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 07:52:54,612 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 07:52:54,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:48" (3/4) ... [2024-11-17 07:52:54,614 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 07:52:54,616 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-17 07:52:54,616 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-17 07:52:54,623 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2024-11-17 07:52:54,623 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-17 07:52:54,624 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-17 07:52:54,624 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-17 07:52:54,703 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 07:52:54,707 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 07:52:54,707 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 07:52:54,708 INFO L158 Benchmark]: Toolchain (without parser) took 7563.24ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 68.9MB in the beginning and 120.0MB in the end (delta: -51.1MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,708 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 142.6MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 07:52:54,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.91ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 110.1MB in the end (delta: -41.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.36ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 108.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,709 INFO L158 Benchmark]: Boogie Preprocessor took 46.82ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,709 INFO L158 Benchmark]: IcfgBuilder took 588.69ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 75.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,709 INFO L158 Benchmark]: TraceAbstraction took 6430.99ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 74.4MB in the beginning and 125.2MB in the end (delta: -50.8MB). Peak memory consumption was 128.7MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,709 INFO L158 Benchmark]: Witness Printer took 95.73ms. Allocated memory is still 220.2MB. Free memory was 125.2MB in the beginning and 120.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-17 07:52:54,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 142.6MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.91ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 110.1MB in the end (delta: -41.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.36ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 108.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.82ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 588.69ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 75.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6430.99ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 74.4MB in the beginning and 125.2MB in the end (delta: -50.8MB). Peak memory consumption was 128.7MB. Max. memory is 16.1GB. * Witness Printer took 95.73ms. Allocated memory is still 220.2MB. Free memory was 125.2MB in the beginning and 120.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 61 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: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 702 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 653 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1119 IncrementalHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 14 mSDtfsCounter, 1119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=9, InterpolantAutomatonStates: 67, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 204 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 13 NumberOfNonLiveVariables, 346 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 75/171 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! [2024-11-17 07:52:54,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE