/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 INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:55:06,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:55:06,957 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 [2023-08-25 07:55:06,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:55:06,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:55:06,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:55:06,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:55:06,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:55:06,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:55:06,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:55:06,983 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:55:06,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:55:06,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:55:06,984 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:55:06,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:55:06,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:55:06,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:55:06,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:55:06,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:55:06,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:55:06,987 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:55:06,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:55:06,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:55:06,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:55:06,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:55:06,989 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:55:06,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:55:06,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:55:06,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:55:06,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:55:06,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:55:06,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:55:06,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:55:06,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:55:06,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:55:06,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:55:07,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:55:07,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:55:07,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:55:07,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:55:07,297 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:55:07,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-25 07:55:08,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:55:08,724 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:55:08,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-25 07:55:08,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d472049/44400e5f040a4a28be72b472f56e10c0/FLAGcba482168 [2023-08-25 07:55:08,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d472049/44400e5f040a4a28be72b472f56e10c0 [2023-08-25 07:55:08,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:55:08,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:55:08,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:55:08,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:55:08,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:55:08,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:55:08" (1/1) ... [2023-08-25 07:55:08,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b45f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:08, skipping insertion in model container [2023-08-25 07:55:08,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:55:08" (1/1) ... [2023-08-25 07:55:08,817 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:55:09,002 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 07:55:09,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:55:09,169 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:55:09,190 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 07:55:09,194 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-25 07:55:09,196 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-25 07:55:09,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:55:09,244 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:55:09,245 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:55:09,245 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:55:09,251 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:55:09,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09 WrapperNode [2023-08-25 07:55:09,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:55:09,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:55:09,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:55:09,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:55:09,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,309 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2023-08-25 07:55:09,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:55:09,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:55:09,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:55:09,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:55:09,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:55:09,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:55:09,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:55:09,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:55:09,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (1/1) ... [2023-08-25 07:55:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:55:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:55:09,372 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) [2023-08-25 07:55:09,383 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 [2023-08-25 07:55:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:55:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:55:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:55:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:55:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-08-25 07:55:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-08-25 07:55:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:55:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:55:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:55:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:55:09,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:55:09,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:55:09,413 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-08-25 07:55:09,413 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-08-25 07:55:09,415 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:55:09,548 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:55:09,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:55:09,872 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:55:09,997 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:55:09,997 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 07:55:09,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:55:09 BoogieIcfgContainer [2023-08-25 07:55:09,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:55:10,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:55:10,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:55:10,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:55:10,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:55:08" (1/3) ... [2023-08-25 07:55:10,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709c4f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:55:10, skipping insertion in model container [2023-08-25 07:55:10,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:09" (2/3) ... [2023-08-25 07:55:10,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709c4f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:55:10, skipping insertion in model container [2023-08-25 07:55:10,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:55:09" (3/3) ... [2023-08-25 07:55:10,008 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-08-25 07:55:10,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:55:10,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-25 07:55:10,026 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:55:10,111 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 07:55:10,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 178 transitions, 388 flow [2023-08-25 07:55:10,232 INFO L124 PetriNetUnfolderBase]: 4/174 cut-off events. [2023-08-25 07:55:10,232 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 07:55:10,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 174 events. 4/174 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 304 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-08-25 07:55:10,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 178 transitions, 388 flow [2023-08-25 07:55:10,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 161 transitions, 343 flow [2023-08-25 07:55:10,257 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:55:10,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 161 transitions, 343 flow [2023-08-25 07:55:10,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 161 transitions, 343 flow [2023-08-25 07:55:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 161 transitions, 343 flow [2023-08-25 07:55:10,354 INFO L124 PetriNetUnfolderBase]: 4/161 cut-off events. [2023-08-25 07:55:10,354 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 07:55:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 161 events. 4/161 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-08-25 07:55:10,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 10874 [2023-08-25 07:55:14,143 INFO L134 LiptonReduction]: Checked pairs total: 31269 [2023-08-25 07:55:14,144 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-25 07:55:14,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:55:14,160 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;@bf961a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:55:14,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-25 07:55:14,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:55:14,163 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 07:55:14,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:55:14,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:14,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 07:55:14,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr0ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:14,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 665953, now seen corresponding path program 1 times [2023-08-25 07:55:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433274798] [2023-08-25 07:55:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433274798] [2023-08-25 07:55:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433274798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:55:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049042870] [2023-08-25 07:55:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:55:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:55:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:55:14,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 305 [2023-08-25 07:55:14,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 163 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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) [2023-08-25 07:55:14,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:14,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 305 [2023-08-25 07:55:14,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:15,533 INFO L124 PetriNetUnfolderBase]: 9835/13613 cut-off events. [2023-08-25 07:55:15,534 INFO L125 PetriNetUnfolderBase]: For 1107/1107 co-relation queries the response was YES. [2023-08-25 07:55:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27905 conditions, 13613 events. 9835/13613 cut-off events. For 1107/1107 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 71187 event pairs, 9835 based on Foata normal form. 0/12709 useless extension candidates. Maximal degree in co-relation 22493. Up to 13525 conditions per place. [2023-08-25 07:55:15,629 INFO L140 encePairwiseOnDemand]: 275/305 looper letters, 36 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-25 07:55:15,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 175 flow [2023-08-25 07:55:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:55:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:55:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 314 transitions. [2023-08-25 07:55:15,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147540983606558 [2023-08-25 07:55:15,645 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 314 transitions. [2023-08-25 07:55:15,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 314 transitions. [2023-08-25 07:55:15,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:15,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 314 transitions. [2023-08-25 07:55:15,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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) [2023-08-25 07:55:15,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-08-25 07:55:15,659 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-08-25 07:55:15,660 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 163 flow. Second operand 2 states and 314 transitions. [2023-08-25 07:55:15,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 175 flow [2023-08-25 07:55:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-25 07:55:15,689 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 90 flow [2023-08-25 07:55:15,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-25 07:55:15,695 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -36 predicate places. [2023-08-25 07:55:15,696 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 90 flow [2023-08-25 07:55:15,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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) [2023-08-25 07:55:15,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:15,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:55:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:55:15,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:15,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1634810699, now seen corresponding path program 1 times [2023-08-25 07:55:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:15,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463106698] [2023-08-25 07:55:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:15,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:15,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463106698] [2023-08-25 07:55:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463106698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:55:15,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587577597] [2023-08-25 07:55:15,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:15,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:55:15,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:15,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:55:15,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:55:15,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 305 [2023-08-25 07:55:15,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2023-08-25 07:55:15,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:15,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 305 [2023-08-25 07:55:15,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:18,432 INFO L124 PetriNetUnfolderBase]: 29227/39360 cut-off events. [2023-08-25 07:55:18,433 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-08-25 07:55:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79768 conditions, 39360 events. 29227/39360 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 211914 event pairs, 20703 based on Foata normal form. 0/34536 useless extension candidates. Maximal degree in co-relation 79765. Up to 31809 conditions per place. [2023-08-25 07:55:18,640 INFO L140 encePairwiseOnDemand]: 294/305 looper letters, 60 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-08-25 07:55:18,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 292 flow [2023-08-25 07:55:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:55:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:55:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-08-25 07:55:18,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45792349726775955 [2023-08-25 07:55:18,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-08-25 07:55:18,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-08-25 07:55:18,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:18,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-08-25 07:55:18,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-25 07:55:18,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:18,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:18,651 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 90 flow. Second operand 3 states and 419 transitions. [2023-08-25 07:55:18,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 292 flow [2023-08-25 07:55:18,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:55:18,654 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 168 flow [2023-08-25 07:55:18,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-08-25 07:55:18,657 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-08-25 07:55:18,658 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 168 flow [2023-08-25 07:55:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2023-08-25 07:55:18,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:18,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:55:18,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr7ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:18,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash 448737369, now seen corresponding path program 1 times [2023-08-25 07:55:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861023338] [2023-08-25 07:55:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:18,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:18,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:18,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861023338] [2023-08-25 07:55:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861023338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:18,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284032856] [2023-08-25 07:55:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:18,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-25 07:55:18,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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) [2023-08-25 07:55:18,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:18,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-25 07:55:18,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:22,141 INFO L124 PetriNetUnfolderBase]: 38467/55688 cut-off events. [2023-08-25 07:55:22,142 INFO L125 PetriNetUnfolderBase]: For 13880/15318 co-relation queries the response was YES. [2023-08-25 07:55:22,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135968 conditions, 55688 events. 38467/55688 cut-off events. For 13880/15318 co-relation queries the response was YES. Maximal size of possible extension queue 2569. Compared 398495 event pairs, 5916 based on Foata normal form. 496/49186 useless extension candidates. Maximal degree in co-relation 135963. Up to 20210 conditions per place. [2023-08-25 07:55:22,718 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 178 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2023-08-25 07:55:22,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 210 transitions, 1063 flow [2023-08-25 07:55:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:55:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:55:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1111 transitions. [2023-08-25 07:55:22,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455327868852459 [2023-08-25 07:55:22,722 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1111 transitions. [2023-08-25 07:55:22,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1111 transitions. [2023-08-25 07:55:22,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:22,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1111 transitions. [2023-08-25 07:55:22,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.875) internal successors, (1111), 8 states have internal predecessors, (1111), 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) [2023-08-25 07:55:22,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:22,730 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:22,730 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 168 flow. Second operand 8 states and 1111 transitions. [2023-08-25 07:55:22,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 210 transitions, 1063 flow [2023-08-25 07:55:23,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 210 transitions, 997 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:55:23,175 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 328 flow [2023-08-25 07:55:23,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-08-25 07:55:23,176 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -21 predicate places. [2023-08-25 07:55:23,176 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 328 flow [2023-08-25 07:55:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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) [2023-08-25 07:55:23,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:23,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:23,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:55:23,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:23,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 877953812, now seen corresponding path program 1 times [2023-08-25 07:55:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830545840] [2023-08-25 07:55:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830545840] [2023-08-25 07:55:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830545840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:23,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:55:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803250421] [2023-08-25 07:55:23,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:23,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:55:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:55:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:55:23,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 305 [2023-08-25 07:55:23,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-25 07:55:23,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:23,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 305 [2023-08-25 07:55:23,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:24,994 INFO L124 PetriNetUnfolderBase]: 17448/27367 cut-off events. [2023-08-25 07:55:24,995 INFO L125 PetriNetUnfolderBase]: For 22148/22382 co-relation queries the response was YES. [2023-08-25 07:55:25,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76367 conditions, 27367 events. 17448/27367 cut-off events. For 22148/22382 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 201779 event pairs, 5397 based on Foata normal form. 2962/27655 useless extension candidates. Maximal degree in co-relation 76357. Up to 18151 conditions per place. [2023-08-25 07:55:25,200 INFO L140 encePairwiseOnDemand]: 299/305 looper letters, 91 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2023-08-25 07:55:25,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 655 flow [2023-08-25 07:55:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:55:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:55:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-25 07:55:25,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721311475409836 [2023-08-25 07:55:25,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-25 07:55:25,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-25 07:55:25,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:25,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-25 07:55:25,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2023-08-25 07:55:25,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:25,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:25,342 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 328 flow. Second operand 3 states and 432 transitions. [2023-08-25 07:55:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 655 flow [2023-08-25 07:55:25,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 655 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:55:25,453 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 343 flow [2023-08-25 07:55:25,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-08-25 07:55:25,455 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -18 predicate places. [2023-08-25 07:55:25,455 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 343 flow [2023-08-25 07:55:25,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-25 07:55:25,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:25,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:25,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:55:25,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:25,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1162145864, now seen corresponding path program 2 times [2023-08-25 07:55:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429103137] [2023-08-25 07:55:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:25,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429103137] [2023-08-25 07:55:25,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429103137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:25,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:25,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:55:25,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452186301] [2023-08-25 07:55:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:55:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:55:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:55:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 305 [2023-08-25 07:55:25,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-08-25 07:55:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 305 [2023-08-25 07:55:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:26,139 INFO L124 PetriNetUnfolderBase]: 3781/6858 cut-off events. [2023-08-25 07:55:26,140 INFO L125 PetriNetUnfolderBase]: For 8767/8781 co-relation queries the response was YES. [2023-08-25 07:55:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19974 conditions, 6858 events. 3781/6858 cut-off events. For 8767/8781 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 47441 event pairs, 1236 based on Foata normal form. 745/7260 useless extension candidates. Maximal degree in co-relation 19962. Up to 2988 conditions per place. [2023-08-25 07:55:26,160 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 120 selfloop transitions, 9 changer transitions 5/140 dead transitions. [2023-08-25 07:55:26,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 140 transitions, 904 flow [2023-08-25 07:55:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:55:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:55:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 587 transitions. [2023-08-25 07:55:26,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48114754098360657 [2023-08-25 07:55:26,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 587 transitions. [2023-08-25 07:55:26,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 587 transitions. [2023-08-25 07:55:26,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:26,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 587 transitions. [2023-08-25 07:55:26,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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) [2023-08-25 07:55:26,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 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) [2023-08-25 07:55:26,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 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) [2023-08-25 07:55:26,166 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 343 flow. Second operand 4 states and 587 transitions. [2023-08-25 07:55:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 140 transitions, 904 flow [2023-08-25 07:55:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 140 transitions, 882 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 07:55:26,191 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 392 flow [2023-08-25 07:55:26,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2023-08-25 07:55:26,192 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -14 predicate places. [2023-08-25 07:55:26,192 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 392 flow [2023-08-25 07:55:26,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-08-25 07:55:26,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:26,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:26,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:55:26,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:26,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1868960066, now seen corresponding path program 1 times [2023-08-25 07:55:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052000108] [2023-08-25 07:55:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:26,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:26,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:26,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052000108] [2023-08-25 07:55:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052000108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:26,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:26,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:55:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635833949] [2023-08-25 07:55:26,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:26,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:55:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:55:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:55:26,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 305 [2023-08-25 07:55:26,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-08-25 07:55:26,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:26,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 305 [2023-08-25 07:55:26,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:26,798 INFO L124 PetriNetUnfolderBase]: 4484/7787 cut-off events. [2023-08-25 07:55:26,799 INFO L125 PetriNetUnfolderBase]: For 9910/9910 co-relation queries the response was YES. [2023-08-25 07:55:26,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24420 conditions, 7787 events. 4484/7787 cut-off events. For 9910/9910 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 50863 event pairs, 3308 based on Foata normal form. 0/7335 useless extension candidates. Maximal degree in co-relation 24406. Up to 7422 conditions per place. [2023-08-25 07:55:26,835 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 85 selfloop transitions, 9 changer transitions 6/100 dead transitions. [2023-08-25 07:55:26,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 697 flow [2023-08-25 07:55:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:55:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:55:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-25 07:55:26,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2023-08-25 07:55:26,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-25 07:55:26,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-25 07:55:26,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:26,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-25 07:55:26,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-08-25 07:55:26,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:26,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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) [2023-08-25 07:55:26,845 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 392 flow. Second operand 3 states and 410 transitions. [2023-08-25 07:55:26,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 697 flow [2023-08-25 07:55:26,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:55:26,861 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 460 flow [2023-08-25 07:55:26,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-08-25 07:55:26,865 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-08-25 07:55:26,868 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 460 flow [2023-08-25 07:55:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-08-25 07:55:26,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:26,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:55:26,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr7ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:26,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -606037705, now seen corresponding path program 1 times [2023-08-25 07:55:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740182731] [2023-08-25 07:55:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:26,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:26,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740182731] [2023-08-25 07:55:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740182731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260404963] [2023-08-25 07:55:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:26,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-25 07:55:26,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 460 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 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) [2023-08-25 07:55:26,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:26,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-25 07:55:26,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:27,728 INFO L124 PetriNetUnfolderBase]: 4100/7497 cut-off events. [2023-08-25 07:55:27,728 INFO L125 PetriNetUnfolderBase]: For 11890/12127 co-relation queries the response was YES. [2023-08-25 07:55:27,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25166 conditions, 7497 events. 4100/7497 cut-off events. For 11890/12127 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 52915 event pairs, 769 based on Foata normal form. 116/7407 useless extension candidates. Maximal degree in co-relation 25150. Up to 3275 conditions per place. [2023-08-25 07:55:27,761 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 163 selfloop transitions, 36 changer transitions 24/229 dead transitions. [2023-08-25 07:55:27,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 229 transitions, 1646 flow [2023-08-25 07:55:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:55:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:55:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1091 transitions. [2023-08-25 07:55:27,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471311475409836 [2023-08-25 07:55:27,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1091 transitions. [2023-08-25 07:55:27,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1091 transitions. [2023-08-25 07:55:27,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:27,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1091 transitions. [2023-08-25 07:55:27,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.375) internal successors, (1091), 8 states have internal predecessors, (1091), 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) [2023-08-25 07:55:27,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:27,776 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:27,776 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 460 flow. Second operand 8 states and 1091 transitions. [2023-08-25 07:55:27,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 229 transitions, 1646 flow [2023-08-25 07:55:27,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 229 transitions, 1614 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-25 07:55:27,802 INFO L231 Difference]: Finished difference. Result has 84 places, 108 transitions, 756 flow [2023-08-25 07:55:27,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=84, PETRI_TRANSITIONS=108} [2023-08-25 07:55:27,802 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-25 07:55:27,803 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 108 transitions, 756 flow [2023-08-25 07:55:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 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) [2023-08-25 07:55:27,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:27,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:55:27,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr7ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:27,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2070557108, now seen corresponding path program 1 times [2023-08-25 07:55:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372912389] [2023-08-25 07:55:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372912389] [2023-08-25 07:55:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372912389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395961280] [2023-08-25 07:55:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:27,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-25 07:55:27,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 108 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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) [2023-08-25 07:55:27,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:27,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-25 07:55:27,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:28,508 INFO L124 PetriNetUnfolderBase]: 3914/7237 cut-off events. [2023-08-25 07:55:28,508 INFO L125 PetriNetUnfolderBase]: For 18067/18251 co-relation queries the response was YES. [2023-08-25 07:55:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27158 conditions, 7237 events. 3914/7237 cut-off events. For 18067/18251 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 51437 event pairs, 557 based on Foata normal form. 152/7315 useless extension candidates. Maximal degree in co-relation 27138. Up to 2744 conditions per place. [2023-08-25 07:55:28,541 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 151 selfloop transitions, 50 changer transitions 25/232 dead transitions. [2023-08-25 07:55:28,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 232 transitions, 1861 flow [2023-08-25 07:55:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:55:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:55:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1090 transitions. [2023-08-25 07:55:28,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44672131147540983 [2023-08-25 07:55:28,544 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1090 transitions. [2023-08-25 07:55:28,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1090 transitions. [2023-08-25 07:55:28,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:28,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1090 transitions. [2023-08-25 07:55:28,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.25) internal successors, (1090), 8 states have internal predecessors, (1090), 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) [2023-08-25 07:55:28,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:28,551 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:28,551 INFO L175 Difference]: Start difference. First operand has 84 places, 108 transitions, 756 flow. Second operand 8 states and 1090 transitions. [2023-08-25 07:55:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 232 transitions, 1861 flow [2023-08-25 07:55:28,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 232 transitions, 1855 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-25 07:55:28,585 INFO L231 Difference]: Finished difference. Result has 94 places, 121 transitions, 1012 flow [2023-08-25 07:55:28,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1012, PETRI_PLACES=94, PETRI_TRANSITIONS=121} [2023-08-25 07:55:28,585 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2023-08-25 07:55:28,585 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 121 transitions, 1012 flow [2023-08-25 07:55:28,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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) [2023-08-25 07:55:28,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:28,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:28,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:55:28,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr7ASSERT_VIOLATIONASSERT === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:28,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2046512025, now seen corresponding path program 1 times [2023-08-25 07:55:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:28,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807014036] [2023-08-25 07:55:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:28,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:28,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807014036] [2023-08-25 07:55:28,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807014036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:28,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171963473] [2023-08-25 07:55:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:28,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:28,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-25 07:55:28,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 121 transitions, 1012 flow. Second operand has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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) [2023-08-25 07:55:28,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:28,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-25 07:55:28,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:29,511 INFO L124 PetriNetUnfolderBase]: 3808/7074 cut-off events. [2023-08-25 07:55:29,511 INFO L125 PetriNetUnfolderBase]: For 22255/22428 co-relation queries the response was YES. [2023-08-25 07:55:29,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27878 conditions, 7074 events. 3808/7074 cut-off events. For 22255/22428 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50244 event pairs, 643 based on Foata normal form. 151/7151 useless extension candidates. Maximal degree in co-relation 27854. Up to 2780 conditions per place. [2023-08-25 07:55:29,541 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 151 selfloop transitions, 55 changer transitions 33/245 dead transitions. [2023-08-25 07:55:29,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 245 transitions, 2160 flow [2023-08-25 07:55:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:55:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:55:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions. [2023-08-25 07:55:29,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44754098360655736 [2023-08-25 07:55:29,544 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions. [2023-08-25 07:55:29,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions. [2023-08-25 07:55:29,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:29,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions. [2023-08-25 07:55:29,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 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) [2023-08-25 07:55:29,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:29,551 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 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) [2023-08-25 07:55:29,551 INFO L175 Difference]: Start difference. First operand has 94 places, 121 transitions, 1012 flow. Second operand 8 states and 1092 transitions. [2023-08-25 07:55:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 245 transitions, 2160 flow [2023-08-25 07:55:29,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 245 transitions, 2150 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 07:55:29,609 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1251 flow [2023-08-25 07:55:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1251, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2023-08-25 07:55:29,610 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2023-08-25 07:55:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1251 flow [2023-08-25 07:55:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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) [2023-08-25 07:55:29,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:29,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 07:55:29,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:29,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2090342420, now seen corresponding path program 1 times [2023-08-25 07:55:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670641510] [2023-08-25 07:55:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:29,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670641510] [2023-08-25 07:55:29,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670641510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:29,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390475496] [2023-08-25 07:55:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:29,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:29,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 305 [2023-08-25 07:55:29,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1251 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-25 07:55:29,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:29,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 305 [2023-08-25 07:55:29,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:30,343 INFO L124 PetriNetUnfolderBase]: 3523/6764 cut-off events. [2023-08-25 07:55:30,344 INFO L125 PetriNetUnfolderBase]: For 26862/27024 co-relation queries the response was YES. [2023-08-25 07:55:30,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27793 conditions, 6764 events. 3523/6764 cut-off events. For 26862/27024 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 49622 event pairs, 1141 based on Foata normal form. 276/6967 useless extension candidates. Maximal degree in co-relation 27765. Up to 3054 conditions per place. [2023-08-25 07:55:30,375 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 123 selfloop transitions, 9 changer transitions 68/206 dead transitions. [2023-08-25 07:55:30,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 206 transitions, 2221 flow [2023-08-25 07:55:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:55:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:55:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2023-08-25 07:55:30,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701639344262295 [2023-08-25 07:55:30,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2023-08-25 07:55:30,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2023-08-25 07:55:30,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:30,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2023-08-25 07:55:30,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 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) [2023-08-25 07:55:30,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-08-25 07:55:30,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-08-25 07:55:30,382 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1251 flow. Second operand 5 states and 717 transitions. [2023-08-25 07:55:30,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 206 transitions, 2221 flow [2023-08-25 07:55:30,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 206 transitions, 2206 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-25 07:55:30,465 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 976 flow [2023-08-25 07:55:30,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=976, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2023-08-25 07:55:30,466 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2023-08-25 07:55:30,466 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 976 flow [2023-08-25 07:55:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-25 07:55:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 07:55:30,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 07:55:30,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 318486444, now seen corresponding path program 2 times [2023-08-25 07:55:30,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:30,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942605432] [2023-08-25 07:55:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:30,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:30,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942605432] [2023-08-25 07:55:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942605432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:55:30,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:55:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:55:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201391162] [2023-08-25 07:55:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:55:30,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:55:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:55:30,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:55:30,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 305 [2023-08-25 07:55:30,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 976 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-25 07:55:30,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:30,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 305 [2023-08-25 07:55:30,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:30,731 INFO L124 PetriNetUnfolderBase]: 597/1430 cut-off events. [2023-08-25 07:55:30,731 INFO L125 PetriNetUnfolderBase]: For 5288/5299 co-relation queries the response was YES. [2023-08-25 07:55:30,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 1430 events. 597/1430 cut-off events. For 5288/5299 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8575 event pairs, 167 based on Foata normal form. 96/1523 useless extension candidates. Maximal degree in co-relation 5835. Up to 758 conditions per place. [2023-08-25 07:55:30,736 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2023-08-25 07:55:30,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 77 transitions, 631 flow [2023-08-25 07:55:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:55:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:55:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-08-25 07:55:30,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439344262295082 [2023-08-25 07:55:30,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-08-25 07:55:30,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-08-25 07:55:30,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:30,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-08-25 07:55:30,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-08-25 07:55:30,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-08-25 07:55:30,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 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) [2023-08-25 07:55:30,744 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 976 flow. Second operand 5 states and 677 transitions. [2023-08-25 07:55:30,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 77 transitions, 631 flow [2023-08-25 07:55:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 472 flow, removed 24 selfloop flow, removed 29 redundant places. [2023-08-25 07:55:30,759 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-25 07:55:30,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-25 07:55:30,759 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2023-08-25 07:55:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-25 07:55:30,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-25 07:55:30,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONDATA_RACE (52 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2023-08-25 07:55:30,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2023-08-25 07:55:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr9ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2023-08-25 07:55:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONASSERT (43 of 53 remaining) [2023-08-25 07:55:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2023-08-25 07:55:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2023-08-25 07:55:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2023-08-25 07:55:30,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr1ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr2ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr3ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr4ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2023-08-25 07:55:30,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr9ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONASSERT (20 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2023-08-25 07:55:30,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr9ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONASSERT (10 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2023-08-25 07:55:30,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr1ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr2ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr3ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr4ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr1ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr2ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr3ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2023-08-25 07:55:30,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr4ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2023-08-25 07:55:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 07:55:30,770 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:30,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:55:30,776 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:55:30,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:55:30 BasicIcfg [2023-08-25 07:55:30,779 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:55:30,780 INFO L158 Benchmark]: Toolchain (without parser) took 22017.13ms. Allocated memory was 394.3MB in the beginning and 8.9GB in the end (delta: 8.5GB). Free memory was 368.7MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-25 07:55:30,780 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 394.3MB. Free memory was 372.0MB in the beginning and 371.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:55:30,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.91ms. Allocated memory is still 394.3MB. Free memory was 368.7MB in the beginning and 347.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 07:55:30,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.11ms. Allocated memory is still 394.3MB. Free memory was 347.7MB in the beginning and 345.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:55:30,781 INFO L158 Benchmark]: Boogie Preprocessor took 28.24ms. Allocated memory is still 394.3MB. Free memory was 345.6MB in the beginning and 343.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:55:30,781 INFO L158 Benchmark]: RCFGBuilder took 660.35ms. Allocated memory is still 394.3MB. Free memory was 343.5MB in the beginning and 314.9MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 07:55:30,781 INFO L158 Benchmark]: TraceAbstraction took 20776.54ms. Allocated memory was 394.3MB in the beginning and 8.9GB in the end (delta: 8.5GB). Free memory was 314.1MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-25 07:55:30,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 394.3MB. Free memory was 372.0MB in the beginning and 371.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 489.91ms. Allocated memory is still 394.3MB. Free memory was 368.7MB in the beginning and 347.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.11ms. Allocated memory is still 394.3MB. Free memory was 347.7MB in the beginning and 345.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.24ms. Allocated memory is still 394.3MB. Free memory was 345.6MB in the beginning and 343.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 660.35ms. Allocated memory is still 394.3MB. Free memory was 343.5MB in the beginning and 314.9MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 20776.54ms. Allocated memory was 394.3MB in the beginning and 8.9GB in the end (delta: 8.5GB). Free memory was 314.1MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 1.4GB. 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: 3.9s, 170 PlacesBefore, 84 PlacesAfterwards, 161 TransitionsBefore, 71 TransitionsAfterwards, 10874 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 4 ChoiceCompositions, 127 TotalNumberOfCompositions, 31269 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15221, independent: 14838, independent conditional: 0, independent unconditional: 14838, dependent: 383, dependent conditional: 0, dependent unconditional: 383, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5318, independent: 5243, independent conditional: 0, independent unconditional: 5243, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15221, independent: 9595, independent conditional: 0, independent unconditional: 9595, dependent: 308, dependent conditional: 0, dependent unconditional: 308, unknown: 5318, unknown conditional: 0, unknown unconditional: 5318] , Statistics on independence cache: Total cache size (in pairs): 776, Positive cache size: 730, Positive conditional cache size: 0, Positive unconditional cache size: 730, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 710]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 711]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 711]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 728]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 731]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 734]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 737]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 714]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 714]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 749]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 750]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 751]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 752]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 707]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 718]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 720]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 222 locations, 53 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: 20.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 631 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 631 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 10 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1251occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 07:55:30,805 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...