/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:41:13,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:41:13,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:41:13,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 09:41:13,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:41:13,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:41:13,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:41:13,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:41:13,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:41:13,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:41:13,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:41:13,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:41:13,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:41:13,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:41:13,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:41:13,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:41:13,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:41:13,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:41:13,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:41:13,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:41:13,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:41:13,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:41:13,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:41:13,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:41:13,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:41:13,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:41:13,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:41:13,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:41:13,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:41:13,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:41:13,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:41:13,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:41:13,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:41:13,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:41:13,404 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:41:13,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:41:13,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:41:13,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:41:13,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:41:13,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:41:13,406 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:41:13,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:41:13,407 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:41:13,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:41:13,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:41:13,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:41:13,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:41:13,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:41:13,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:41:13,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:41:13,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:41:13,410 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:41:13,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:41:13,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:41:13,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:41:13,652 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:41:13,652 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:41:13,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-01-28 09:41:14,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:41:14,940 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:41:14,941 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-01-28 09:41:14,946 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66352cc83/7251d35ba566411ebe82be0725857d38/FLAGe1f0ef85a [2023-01-28 09:41:14,961 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66352cc83/7251d35ba566411ebe82be0725857d38 [2023-01-28 09:41:14,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:41:14,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:41:14,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:41:14,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:41:14,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:41:14,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:41:14" (1/1) ... [2023-01-28 09:41:14,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7f366f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:14, skipping insertion in model container [2023-01-28 09:41:14,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:41:14" (1/1) ... [2023-01-28 09:41:14,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:41:14,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:41:15,175 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2023-01-28 09:41:15,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:41:15,193 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:41:15,230 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2023-01-28 09:41:15,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:41:15,237 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:41:15,237 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:41:15,242 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:41:15,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15 WrapperNode [2023-01-28 09:41:15,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:41:15,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:41:15,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:41:15,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:41:15,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,285 INFO L138 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 125 [2023-01-28 09:41:15,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:41:15,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:41:15,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:41:15,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:41:15,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:41:15,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:41:15,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:41:15,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:41:15,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (1/1) ... [2023-01-28 09:41:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:41:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:41:15,349 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) [2023-01-28 09:41:15,355 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 [2023-01-28 09:41:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:41:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:41:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:41:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:41:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:41:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:41:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:41:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:41:15,381 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:41:15,457 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:41:15,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:41:15,725 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:41:15,787 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:41:15,787 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:41:15,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:41:15 BoogieIcfgContainer [2023-01-28 09:41:15,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:41:15,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:41:15,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:41:15,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:41:15,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:41:14" (1/3) ... [2023-01-28 09:41:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d3d388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:41:15, skipping insertion in model container [2023-01-28 09:41:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:41:15" (2/3) ... [2023-01-28 09:41:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d3d388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:41:15, skipping insertion in model container [2023-01-28 09:41:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:41:15" (3/3) ... [2023-01-28 09:41:15,797 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2023-01-28 09:41:15,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:41:15,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:41:15,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:41:15,899 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:41:15,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 272 flow [2023-01-28 09:41:15,986 INFO L130 PetriNetUnfolder]: 9/126 cut-off events. [2023-01-28 09:41:15,986 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:41:15,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 126 events. 9/126 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 09:41:15,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 272 flow [2023-01-28 09:41:15,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 118 transitions, 248 flow [2023-01-28 09:41:15,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:41:16,005 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 118 transitions, 248 flow [2023-01-28 09:41:16,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 118 transitions, 248 flow [2023-01-28 09:41:16,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 118 transitions, 248 flow [2023-01-28 09:41:16,037 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-01-28 09:41:16,038 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:41:16,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 9/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 09:41:16,044 INFO L119 LiptonReduction]: Number of co-enabled transitions 452 [2023-01-28 09:41:19,409 INFO L134 LiptonReduction]: Checked pairs total: 2402 [2023-01-28 09:41:19,409 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-01-28 09:41:19,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:41:19,427 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;@253d7937, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:41:19,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:41:19,433 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-28 09:41:19,434 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:41:19,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:19,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:19,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:41:19,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash -317044709, now seen corresponding path program 1 times [2023-01-28 09:41:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698327884] [2023-01-28 09:41:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:19,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698327884] [2023-01-28 09:41:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698327884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:19,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:41:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202477820] [2023-01-28 09:41:19,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:19,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:41:19,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:41:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:41:19,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-01-28 09:41:19,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-01-28 09:41:19,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:19,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-01-28 09:41:19,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:20,019 INFO L130 PetriNetUnfolder]: 110/219 cut-off events. [2023-01-28 09:41:20,020 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 09:41:20,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 219 events. 110/219 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 756 event pairs, 49 based on Foata normal form. 10/224 useless extension candidates. Maximal degree in co-relation 346. Up to 112 conditions per place. [2023-01-28 09:41:20,025 INFO L137 encePairwiseOnDemand]: 243/247 looper letters, 29 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-28 09:41:20,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 152 flow [2023-01-28 09:41:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:41:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:41:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-01-28 09:41:20,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-01-28 09:41:20,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-01-28 09:41:20,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-01-28 09:41:20,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:20,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-01-28 09:41:20,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2023-01-28 09:41:20,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-01-28 09:41:20,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-01-28 09:41:20,063 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 3 states and 351 transitions. [2023-01-28 09:41:20,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 152 flow [2023-01-28 09:41:20,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:41:20,069 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 67 flow [2023-01-28 09:41:20,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-01-28 09:41:20,073 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-01-28 09:41:20,074 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 67 flow [2023-01-28 09:41:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-01-28 09:41:20,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:20,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:20,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:41:20,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:41:20,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -992258690, now seen corresponding path program 1 times [2023-01-28 09:41:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395205565] [2023-01-28 09:41:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395205565] [2023-01-28 09:41:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395205565] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:20,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:41:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882824380] [2023-01-28 09:41:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:41:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:41:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:41:20,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 247 [2023-01-28 09:41:20,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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) [2023-01-28 09:41:20,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:20,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 247 [2023-01-28 09:41:20,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:20,660 INFO L130 PetriNetUnfolder]: 113/236 cut-off events. [2023-01-28 09:41:20,660 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-01-28 09:41:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 236 events. 113/236 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 918 event pairs, 7 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 204. Up to 159 conditions per place. [2023-01-28 09:41:20,663 INFO L137 encePairwiseOnDemand]: 243/247 looper letters, 17 selfloop transitions, 2 changer transitions 25/47 dead transitions. [2023-01-28 09:41:20,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 47 transitions, 214 flow [2023-01-28 09:41:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:41:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:41:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 558 transitions. [2023-01-28 09:41:20,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518218623481781 [2023-01-28 09:41:20,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 558 transitions. [2023-01-28 09:41:20,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 558 transitions. [2023-01-28 09:41:20,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:20,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 558 transitions. [2023-01-28 09:41:20,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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) [2023-01-28 09:41:20,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 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) [2023-01-28 09:41:20,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 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) [2023-01-28 09:41:20,673 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 67 flow. Second operand 5 states and 558 transitions. [2023-01-28 09:41:20,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 47 transitions, 214 flow [2023-01-28 09:41:20,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 47 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:41:20,675 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 64 flow [2023-01-28 09:41:20,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2023-01-28 09:41:20,676 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 09:41:20,676 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 64 flow [2023-01-28 09:41:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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) [2023-01-28 09:41:20,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:41:20,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:41:20,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:41:20,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:41:20,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:41:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -490002542, now seen corresponding path program 1 times [2023-01-28 09:41:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:41:20,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060172849] [2023-01-28 09:41:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:41:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:41:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:41:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:41:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:41:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060172849] [2023-01-28 09:41:20,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060172849] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:41:20,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:41:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:41:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535680181] [2023-01-28 09:41:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:41:20,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:41:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:41:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:41:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:41:20,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 247 [2023-01-28 09:41:20,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-01-28 09:41:20,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:41:20,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 247 [2023-01-28 09:41:20,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:41:20,928 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-01-28 09:41:20,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 09:41:20,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 15 events. 3/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 2/16 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2023-01-28 09:41:20,930 INFO L137 encePairwiseOnDemand]: 242/247 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-01-28 09:41:20,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 12 transitions, 53 flow [2023-01-28 09:41:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:41:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:41:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 636 transitions. [2023-01-28 09:41:20,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291497975708502 [2023-01-28 09:41:20,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 636 transitions. [2023-01-28 09:41:20,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 636 transitions. [2023-01-28 09:41:20,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:41:20,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 636 transitions. [2023-01-28 09:41:20,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2023-01-28 09:41:20,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 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) [2023-01-28 09:41:20,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 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) [2023-01-28 09:41:20,938 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 64 flow. Second operand 6 states and 636 transitions. [2023-01-28 09:41:20,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 12 transitions, 53 flow [2023-01-28 09:41:20,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 09:41:20,939 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-01-28 09:41:20,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-01-28 09:41:20,941 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-01-28 09:41:20,943 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-01-28 09:41:20,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-01-28 09:41:20,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:41:20,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:41:20,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:41:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:41:20,950 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-01-28 09:41:20,953 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:41:20,953 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:41:20,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:41:20 BasicIcfg [2023-01-28 09:41:20,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:41:20,957 INFO L158 Benchmark]: Toolchain (without parser) took 5991.83ms. Allocated memory is still 379.6MB. Free memory was 346.0MB in the beginning and 162.9MB in the end (delta: 183.1MB). Peak memory consumption was 186.2MB. Max. memory is 16.0GB. [2023-01-28 09:41:20,959 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:41:20,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.95ms. Allocated memory is still 379.6MB. Free memory was 345.7MB in the beginning and 334.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:41:20,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.45ms. Allocated memory is still 379.6MB. Free memory was 334.7MB in the beginning and 332.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:41:20,961 INFO L158 Benchmark]: Boogie Preprocessor took 29.56ms. Allocated memory is still 379.6MB. Free memory was 332.7MB in the beginning and 331.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:41:20,962 INFO L158 Benchmark]: RCFGBuilder took 472.59ms. Allocated memory is still 379.6MB. Free memory was 331.4MB in the beginning and 313.8MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 09:41:20,962 INFO L158 Benchmark]: TraceAbstraction took 5164.47ms. Allocated memory is still 379.6MB. Free memory was 313.1MB in the beginning and 162.9MB in the end (delta: 150.2MB). Peak memory consumption was 152.6MB. Max. memory is 16.0GB. [2023-01-28 09:41:20,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 275.95ms. Allocated memory is still 379.6MB. Free memory was 345.7MB in the beginning and 334.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.45ms. Allocated memory is still 379.6MB. Free memory was 334.7MB in the beginning and 332.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.56ms. Allocated memory is still 379.6MB. Free memory was 332.7MB in the beginning and 331.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 472.59ms. Allocated memory is still 379.6MB. Free memory was 331.4MB in the beginning and 313.8MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 5164.47ms. Allocated memory is still 379.6MB. Free memory was 313.1MB in the beginning and 162.9MB in the end (delta: 150.2MB). Peak memory consumption was 152.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 116 PlacesBefore, 27 PlacesAfterwards, 118 TransitionsBefore, 22 TransitionsAfterwards, 452 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 119 TotalNumberOfCompositions, 2402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 853, independent: 659, independent conditional: 0, independent unconditional: 659, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 244, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 853, independent: 434, independent conditional: 0, independent unconditional: 434, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 244, unknown conditional: 0, unknown unconditional: 244] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 141 locations, 3 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: 5.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:41:20,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...