/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:38:16,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:38:16,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 09:38:16,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:38:16,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:38:16,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:38:16,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:38:16,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:38:16,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:38:16,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:38:16,272 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:38:16,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:38:16,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:38:16,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:38:16,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:38:16,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:38:16,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:38:16,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:38:16,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:38:16,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:38:16,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:38:16,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:38:16,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:38:16,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:38:16,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:38:16,277 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:38:16,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:38:16,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:38:16,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:38:16,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:38:16,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:38:16,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:38:16,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:38:16,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:38:16,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:38:16,280 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:38:16,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:38:16,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:38:16,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:38:16,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:38:16,593 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:38:16,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-27 09:38:17,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:38:17,925 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:38:17,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-27 09:38:17,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d13c374a/9a6dffdc3ae8483980a841ec9029bc87/FLAG86514d802 [2023-08-27 09:38:17,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d13c374a/9a6dffdc3ae8483980a841ec9029bc87 [2023-08-27 09:38:17,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:38:17,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:38:17,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:38:17,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:38:17,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:38:17,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:17" (1/1) ... [2023-08-27 09:38:17,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1fa70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:17, skipping insertion in model container [2023-08-27 09:38:17,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:17" (1/1) ... [2023-08-27 09:38:18,017 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:38:18,148 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:38:18,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:38:18,323 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:38:18,348 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:38:18,352 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-27 09:38:18,354 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-27 09:38:18,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:38:18,415 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:18,416 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:18,416 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:18,422 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:38:18,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18 WrapperNode [2023-08-27 09:38:18,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:38:18,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:38:18,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:38:18,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:38:18,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,473 INFO L138 Inliner]: procedures = 172, calls = 62, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2023-08-27 09:38:18,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:38:18,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:38:18,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:38:18,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:38:18,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:38:18,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:38:18,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:38:18,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:38:18,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (1/1) ... [2023-08-27 09:38:18,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:38:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:38:18,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 09:38:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 09:38:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:38:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-27 09:38:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-27 09:38:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 09:38:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 09:38:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:38:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 09:38:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:38:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:38:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:38:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:38:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 09:38:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:38:18,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:38:18,608 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:38:18,731 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:38:18,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:38:18,888 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:38:18,893 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:38:18,893 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 09:38:18,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:18 BoogieIcfgContainer [2023-08-27 09:38:18,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:38:18,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:38:18,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:38:18,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:38:18,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:38:17" (1/3) ... [2023-08-27 09:38:18,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac712aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:18, skipping insertion in model container [2023-08-27 09:38:18,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:18" (2/3) ... [2023-08-27 09:38:18,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac712aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:18, skipping insertion in model container [2023-08-27 09:38:18,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:18" (3/3) ... [2023-08-27 09:38:18,902 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2023-08-27 09:38:18,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:38:18,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-27 09:38:18,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:38:18,972 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:38:19,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 240 flow [2023-08-27 09:38:19,064 INFO L124 PetriNetUnfolderBase]: 15/110 cut-off events. [2023-08-27 09:38:19,064 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:38:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 110 events. 15/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-08-27 09:38:19,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 112 transitions, 240 flow [2023-08-27 09:38:19,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 101 transitions, 211 flow [2023-08-27 09:38:19,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:38:19,103 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 101 transitions, 211 flow [2023-08-27 09:38:19,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 101 transitions, 211 flow [2023-08-27 09:38:19,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 101 transitions, 211 flow [2023-08-27 09:38:19,126 INFO L124 PetriNetUnfolderBase]: 15/101 cut-off events. [2023-08-27 09:38:19,126 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:38:19,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 101 events. 15/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-08-27 09:38:19,129 INFO L119 LiptonReduction]: Number of co-enabled transitions 3008 [2023-08-27 09:38:21,116 INFO L134 LiptonReduction]: Checked pairs total: 9638 [2023-08-27 09:38:21,116 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-27 09:38:21,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:38:21,134 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3cfe9268, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:38:21,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-27 09:38:21,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:38:21,139 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-08-27 09:38:21,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:38:21,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:21,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:38:21,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:21,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 853331552, now seen corresponding path program 1 times [2023-08-27 09:38:21,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:21,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004273460] [2023-08-27 09:38:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:38:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004273460] [2023-08-27 09:38:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004273460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:21,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:21,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:38:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772274614] [2023-08-27 09:38:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:21,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:38:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:38:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:38:21,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 192 [2023-08-27 09:38:21,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2023-08-27 09:38:21,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:21,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 192 [2023-08-27 09:38:21,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:21,591 INFO L124 PetriNetUnfolderBase]: 463/840 cut-off events. [2023-08-27 09:38:21,591 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-27 09:38:21,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 840 events. 463/840 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4298 event pairs, 170 based on Foata normal form. 42/643 useless extension candidates. Maximal degree in co-relation 1452. Up to 437 conditions per place. [2023-08-27 09:38:21,598 INFO L140 encePairwiseOnDemand]: 182/192 looper letters, 40 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2023-08-27 09:38:21,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 210 flow [2023-08-27 09:38:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:38:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:38:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-27 09:38:21,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2023-08-27 09:38:21,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-27 09:38:21,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-27 09:38:21,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:21,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-27 09:38:21,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-08-27 09:38:21,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-08-27 09:38:21,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-08-27 09:38:21,622 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 99 flow. Second operand 3 states and 330 transitions. [2023-08-27 09:38:21,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 210 flow [2023-08-27 09:38:21,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:38:21,627 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 104 flow [2023-08-27 09:38:21,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-27 09:38:21,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 09:38:21,631 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 104 flow [2023-08-27 09:38:21,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2023-08-27 09:38:21,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:21,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:21,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:38:21,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:21,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash 742747080, now seen corresponding path program 1 times [2023-08-27 09:38:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:21,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061768742] [2023-08-27 09:38:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:38:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061768742] [2023-08-27 09:38:21,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061768742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:38:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602020446] [2023-08-27 09:38:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:38:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:38:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:38:21,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 192 [2023-08-27 09:38:21,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-27 09:38:21,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:21,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 192 [2023-08-27 09:38:21,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:21,798 INFO L124 PetriNetUnfolderBase]: 379/704 cut-off events. [2023-08-27 09:38:21,798 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-08-27 09:38:21,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 704 events. 379/704 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3502 event pairs, 170 based on Foata normal form. 30/618 useless extension candidates. Maximal degree in co-relation 791. Up to 434 conditions per place. [2023-08-27 09:38:21,802 INFO L140 encePairwiseOnDemand]: 187/192 looper letters, 34 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2023-08-27 09:38:21,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 211 flow [2023-08-27 09:38:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:38:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:38:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-27 09:38:21,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2023-08-27 09:38:21,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-27 09:38:21,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-27 09:38:21,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:21,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-27 09:38:21,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2023-08-27 09:38:21,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-08-27 09:38:21,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-08-27 09:38:21,809 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 104 flow. Second operand 3 states and 321 transitions. [2023-08-27 09:38:21,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 211 flow [2023-08-27 09:38:21,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:38:21,812 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 102 flow [2023-08-27 09:38:21,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-27 09:38:21,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 09:38:21,814 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 102 flow [2023-08-27 09:38:21,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-27 09:38:21,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:21,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:21,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:38:21,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:21,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1505258081, now seen corresponding path program 1 times [2023-08-27 09:38:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:21,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028986983] [2023-08-27 09:38:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:38:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028986983] [2023-08-27 09:38:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028986983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:21,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:21,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:38:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945728859] [2023-08-27 09:38:21,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:38:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:38:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:38:21,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 192 [2023-08-27 09:38:21,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-08-27 09:38:21,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:21,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 192 [2023-08-27 09:38:21,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:22,080 INFO L124 PetriNetUnfolderBase]: 500/893 cut-off events. [2023-08-27 09:38:22,080 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2023-08-27 09:38:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 893 events. 500/893 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4537 event pairs, 105 based on Foata normal form. 14/736 useless extension candidates. Maximal degree in co-relation 1326. Up to 275 conditions per place. [2023-08-27 09:38:22,085 INFO L140 encePairwiseOnDemand]: 184/192 looper letters, 49 selfloop transitions, 11 changer transitions 5/75 dead transitions. [2023-08-27 09:38:22,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 318 flow [2023-08-27 09:38:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:38:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:38:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2023-08-27 09:38:22,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2023-08-27 09:38:22,087 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2023-08-27 09:38:22,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2023-08-27 09:38:22,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:22,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2023-08-27 09:38:22,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 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) [2023-08-27 09:38:22,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-27 09:38:22,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-27 09:38:22,093 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 102 flow. Second operand 5 states and 516 transitions. [2023-08-27 09:38:22,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 318 flow [2023-08-27 09:38:22,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:38:22,096 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 166 flow [2023-08-27 09:38:22,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-27 09:38:22,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-27 09:38:22,098 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 166 flow [2023-08-27 09:38:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-08-27 09:38:22,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:22,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:38:22,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:22,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -508072675, now seen corresponding path program 2 times [2023-08-27 09:38:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:22,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41116757] [2023-08-27 09:38:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:38:22,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41116757] [2023-08-27 09:38:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41116757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:22,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:38:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201566607] [2023-08-27 09:38:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:22,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:38:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:38:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:38:22,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 192 [2023-08-27 09:38:22,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-08-27 09:38:22,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:22,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 192 [2023-08-27 09:38:22,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:22,321 INFO L124 PetriNetUnfolderBase]: 816/1337 cut-off events. [2023-08-27 09:38:22,322 INFO L125 PetriNetUnfolderBase]: For 874/882 co-relation queries the response was YES. [2023-08-27 09:38:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 1337 events. 816/1337 cut-off events. For 874/882 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6410 event pairs, 151 based on Foata normal form. 34/1213 useless extension candidates. Maximal degree in co-relation 2280. Up to 393 conditions per place. [2023-08-27 09:38:22,326 INFO L140 encePairwiseOnDemand]: 185/192 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-08-27 09:38:22,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 491 flow [2023-08-27 09:38:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:38:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:38:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2023-08-27 09:38:22,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2023-08-27 09:38:22,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2023-08-27 09:38:22,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2023-08-27 09:38:22,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:22,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2023-08-27 09:38:22,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2023-08-27 09:38:22,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-27 09:38:22,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2023-08-27 09:38:22,332 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 166 flow. Second operand 5 states and 515 transitions. [2023-08-27 09:38:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 491 flow [2023-08-27 09:38:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 89 transitions, 487 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 09:38:22,338 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-27 09:38:22,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-27 09:38:22,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 09:38:22,339 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-27 09:38:22,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-08-27 09:38:22,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2023-08-27 09:38:22,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2023-08-27 09:38:22,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-27 09:38:22,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-27 09:38:22,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2023-08-27 09:38:22,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2023-08-27 09:38:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:38:22,343 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-27 09:38:22,347 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:38:22,347 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:38:22,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:38:22 BasicIcfg [2023-08-27 09:38:22,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:38:22,350 INFO L158 Benchmark]: Toolchain (without parser) took 4386.43ms. Allocated memory was 343.9MB in the beginning and 417.3MB in the end (delta: 73.4MB). Free memory was 318.8MB in the beginning and 248.4MB in the end (delta: 70.4MB). Peak memory consumption was 144.5MB. Max. memory is 16.0GB. [2023-08-27 09:38:22,368 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory was 320.4MB in the beginning and 320.3MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:38:22,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.15ms. Allocated memory is still 343.9MB. Free memory was 318.8MB in the beginning and 298.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:38:22,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.79ms. Allocated memory is still 343.9MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:38:22,368 INFO L158 Benchmark]: Boogie Preprocessor took 46.81ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 294.7MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 09:38:22,369 INFO L158 Benchmark]: RCFGBuilder took 373.04ms. Allocated memory is still 343.9MB. Free memory was 294.7MB in the beginning and 280.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 09:38:22,369 INFO L158 Benchmark]: TraceAbstraction took 3452.76ms. Allocated memory was 343.9MB in the beginning and 417.3MB in the end (delta: 73.4MB). Free memory was 279.7MB in the beginning and 248.4MB in the end (delta: 31.3MB). Peak memory consumption was 106.7MB. Max. memory is 16.0GB. [2023-08-27 09:38:22,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory was 320.4MB in the beginning and 320.3MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 454.15ms. Allocated memory is still 343.9MB. Free memory was 318.8MB in the beginning and 298.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.79ms. Allocated memory is still 343.9MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 46.81ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 294.7MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 373.04ms. Allocated memory is still 343.9MB. Free memory was 294.7MB in the beginning and 280.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3452.76ms. Allocated memory was 343.9MB in the beginning and 417.3MB in the end (delta: 73.4MB). Free memory was 279.7MB in the beginning and 248.4MB in the end (delta: 31.3MB). Peak memory consumption was 106.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 93 PlacesBefore, 42 PlacesAfterwards, 101 TransitionsBefore, 45 TransitionsAfterwards, 3008 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 80 TotalNumberOfCompositions, 9638 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3983, independent: 3660, independent conditional: 0, independent unconditional: 3660, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1622, independent: 1571, independent conditional: 0, independent unconditional: 1571, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3983, independent: 2089, independent conditional: 0, independent unconditional: 2089, dependent: 272, dependent conditional: 0, dependent unconditional: 272, unknown: 1622, unknown conditional: 0, unknown unconditional: 1622] , Statistics on independence cache: Total cache size (in pairs): 259, Positive cache size: 223, Positive conditional cache size: 0, Positive unconditional cache size: 223, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 152 locations, 6 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: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 360 IncrementalHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 7 mSDtfsCounter, 360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 09:38:22,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...