./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:28:31,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:28:31,067 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:28:31,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:28:31,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:28:31,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:28:31,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:28:31,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:28:31,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:28:31,106 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:28:31,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:28:31,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:28:31,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:28:31,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:28:31,107 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:28:31,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:28:31,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:28:31,108 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:28:31,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:28:31,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:28:31,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:28:31,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:28:31,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:28:31,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:28:31,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:28:31,111 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:28:31,111 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:28:31,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:28:31,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:28:31,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:28:31,112 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:28:31,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:28:31,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:28:31,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:28:31,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:31,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:28:31,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:28:31,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:28:31,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:28:31,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:28:31,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:28:31,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:28:31,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:28:31,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:28:31,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-10 22:28:31,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:28:31,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:28:31,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:28:31,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:28:31,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:28:31,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-10 22:28:32,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:28:32,839 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:28:32,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-10 22:28:32,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9455817f/93f4acf32cd84e73a569819731a0474e/FLAG0f58eb6b7 [2024-11-10 22:28:32,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9455817f/93f4acf32cd84e73a569819731a0474e [2024-11-10 22:28:32,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:28:32,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:28:32,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:32,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:28:32,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:28:32,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:32" (1/1) ... [2024-11-10 22:28:32,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2a2261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32, skipping insertion in model container [2024-11-10 22:28:32,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:32" (1/1) ... [2024-11-10 22:28:32,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:28:33,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:33,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:28:33,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:33,072 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:28:33,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33 WrapperNode [2024-11-10 22:28:33,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:33,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:33,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:28:33,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:28:33,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,099 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2024-11-10 22:28:33,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:33,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:28:33,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:28:33,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:28:33,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,132 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]. [2024-11-10 22:28:33,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,135 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:28:33,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:28:33,138 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:28:33,138 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:28:33,139 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (1/1) ... [2024-11-10 22:28:33,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:33,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:33,167 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) [2024-11-10 22:28:33,169 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 [2024-11-10 22:28:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:28:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:28:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:28:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:28:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:28:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:28:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:28:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:28:33,213 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:28:33,292 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:28:33,294 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:28:33,447 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:28:33,447 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:28:33,575 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:28:33,575 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:28:33,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33 BoogieIcfgContainer [2024-11-10 22:28:33,576 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:28:33,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:28:33,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:28:33,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:28:33,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:32" (1/3) ... [2024-11-10 22:28:33,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148ef956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:33, skipping insertion in model container [2024-11-10 22:28:33,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:33" (2/3) ... [2024-11-10 22:28:33,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148ef956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:33, skipping insertion in model container [2024-11-10 22:28:33,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33" (3/3) ... [2024-11-10 22:28:33,585 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-10 22:28:33,598 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:28:33,599 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-10 22:28:33,599 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:28:33,632 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:28:33,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-11-10 22:28:33,687 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-10 22:28:33,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:28:33,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-10 22:28:33,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-11-10 22:28:33,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow [2024-11-10 22:28:33,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:28:33,712 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;@7f5b483f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:28:33,714 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-10 22:28:33,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:28:33,722 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-10 22:28:33,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:28:33,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:33,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:28:33,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-10 22:28:33,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1531312291, now seen corresponding path program 1 times [2024-11-10 22:28:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269714869] [2024-11-10 22:28:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:33,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269714869] [2024-11-10 22:28:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269714869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:33,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:33,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147279641] [2024-11-10 22:28:33,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:33,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:34,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-10 22:28:34,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-10 22:28:34,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-10 22:28:34,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,118 INFO L124 PetriNetUnfolderBase]: 99/204 cut-off events. [2024-11-10 22:28:34,119 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-10 22:28:34,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 204 events. 99/204 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 839 event pairs, 36 based on Foata normal form. 50/209 useless extension candidates. Maximal degree in co-relation 354. Up to 101 conditions per place. [2024-11-10 22:28:34,126 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-11-10 22:28:34,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 110 flow [2024-11-10 22:28:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-10 22:28:34,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-10 22:28:34,137 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 4 states and 68 transitions. [2024-11-10 22:28:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 110 flow [2024-11-10 22:28:34,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:34,143 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 56 flow [2024-11-10 22:28:34,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-11-10 22:28:34,156 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-11-10 22:28:34,157 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 56 flow [2024-11-10 22:28:34,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-10 22:28:34,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:28:34,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-10 22:28:34,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash 226040915, now seen corresponding path program 1 times [2024-11-10 22:28:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674533993] [2024-11-10 22:28:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674533993] [2024-11-10 22:28:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674533993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227962620] [2024-11-10 22:28:34,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:34,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-10 22:28:34,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-10 22:28:34,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-10 22:28:34,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,317 INFO L124 PetriNetUnfolderBase]: 68/149 cut-off events. [2024-11-10 22:28:34,317 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-10 22:28:34,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 149 events. 68/149 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 566 event pairs, 24 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 129. Up to 77 conditions per place. [2024-11-10 22:28:34,318 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 14 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2024-11-10 22:28:34,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 104 flow [2024-11-10 22:28:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-10 22:28:34,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-10 22:28:34,320 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 56 flow. Second operand 3 states and 55 transitions. [2024-11-10 22:28:34,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 104 flow [2024-11-10 22:28:34,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:34,321 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 50 flow [2024-11-10 22:28:34,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2024-11-10 22:28:34,322 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-10 22:28:34,322 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 50 flow [2024-11-10 22:28:34,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-10 22:28:34,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:28:34,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-10 22:28:34,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1707157635, now seen corresponding path program 1 times [2024-11-10 22:28:34,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506829812] [2024-11-10 22:28:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506829812] [2024-11-10 22:28:34,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506829812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:34,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:34,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735496226] [2024-11-10 22:28:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:34,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-10 22:28:34,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:34,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-10 22:28:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,429 INFO L124 PetriNetUnfolderBase]: 84/169 cut-off events. [2024-11-10 22:28:34,429 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-10 22:28:34,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 169 events. 84/169 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 663 event pairs, 24 based on Foata normal form. 9/147 useless extension candidates. Maximal degree in co-relation 158. Up to 80 conditions per place. [2024-11-10 22:28:34,430 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 14 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2024-11-10 22:28:34,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 99 flow [2024-11-10 22:28:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-10 22:28:34,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-10 22:28:34,432 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 50 flow. Second operand 4 states and 63 transitions. [2024-11-10 22:28:34,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 99 flow [2024-11-10 22:28:34,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:34,433 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 48 flow [2024-11-10 22:28:34,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2024-11-10 22:28:34,433 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2024-11-10 22:28:34,434 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 48 flow [2024-11-10 22:28:34,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:34,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:28:34,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-10 22:28:34,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1382278973, now seen corresponding path program 1 times [2024-11-10 22:28:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757112754] [2024-11-10 22:28:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757112754] [2024-11-10 22:28:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757112754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:34,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783801018] [2024-11-10 22:28:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:34,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:34,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-10 22:28:34,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-10 22:28:34,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-10 22:28:34,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,510 INFO L124 PetriNetUnfolderBase]: 48/111 cut-off events. [2024-11-10 22:28:34,510 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 22:28:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 111 events. 48/111 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 373 event pairs, 13 based on Foata normal form. 9/113 useless extension candidates. Maximal degree in co-relation 92. Up to 51 conditions per place. [2024-11-10 22:28:34,511 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2024-11-10 22:28:34,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 89 flow [2024-11-10 22:28:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-10 22:28:34,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-10 22:28:34,517 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 48 flow. Second operand 3 states and 53 transitions. [2024-11-10 22:28:34,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 89 flow [2024-11-10 22:28:34,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 83 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:34,518 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2024-11-10 22:28:34,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2024-11-10 22:28:34,518 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2024-11-10 22:28:34,518 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2024-11-10 22:28:34,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-10 22:28:34,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-11-10 22:28:34,528 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-10 22:28:34,529 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-10 22:28:34,530 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-10 22:28:34,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:28:34,530 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 22:28:34,539 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:28:34,543 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:28:34,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:28:34 BasicIcfg [2024-11-10 22:28:34,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:28:34,552 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:28:34,552 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:28:34,552 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:28:34,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33" (3/4) ... [2024-11-10 22:28:34,557 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:28:34,559 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 22:28:34,559 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 22:28:34,563 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-10 22:28:34,563 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-10 22:28:34,563 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 22:28:34,564 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 22:28:34,625 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:28:34,626 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:28:34,626 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:28:34,627 INFO L158 Benchmark]: Toolchain (without parser) took 1762.80ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 86.2MB in the beginning and 141.6MB in the end (delta: -55.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:28:34,627 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 159.4MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:28:34,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.46ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 73.6MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 22:28:34,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.02ms. Allocated memory is still 159.4MB. Free memory was 73.6MB in the beginning and 72.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:28:34,628 INFO L158 Benchmark]: Boogie Preprocessor took 36.67ms. Allocated memory is still 159.4MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:28:34,628 INFO L158 Benchmark]: IcfgBuilder took 437.86ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 70.3MB in the beginning and 180.7MB in the end (delta: -110.5MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2024-11-10 22:28:34,628 INFO L158 Benchmark]: TraceAbstraction took 971.42ms. Allocated memory is still 216.0MB. Free memory was 179.7MB in the beginning and 146.8MB in the end (delta: 32.9MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2024-11-10 22:28:34,629 INFO L158 Benchmark]: Witness Printer took 74.56ms. Allocated memory is still 216.0MB. Free memory was 146.8MB in the beginning and 141.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:28:34,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 159.4MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.46ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 73.6MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.02ms. Allocated memory is still 159.4MB. Free memory was 73.6MB in the beginning and 72.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.67ms. Allocated memory is still 159.4MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 437.86ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 70.3MB in the beginning and 180.7MB in the end (delta: -110.5MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * TraceAbstraction took 971.42ms. Allocated memory is still 216.0MB. Free memory was 179.7MB in the beginning and 146.8MB in the end (delta: 32.9MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Witness Printer took 74.56ms. Allocated memory is still 216.0MB. Free memory was 146.8MB in the beginning and 141.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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, 47 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 6 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 22:28:34,654 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