/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:19:31,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:19:31,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:19:31,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:19:31,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:19:31,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:19:31,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:19:31,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:19:31,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:19:31,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:19:31,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:19:31,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:19:31,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:19:31,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:19:31,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:19:31,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:19:31,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:19:31,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:19:31,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:19:31,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:19:31,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:19:31,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:19:31,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:19:31,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:19:31,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:19:31,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:19:31,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:19:31,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:19:31,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:19:31,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:19:31,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:19:31,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:19:31,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:19:31,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:19:31,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:19:31,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:19:31,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:19:31,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:19:31,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:19:31,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:19:31,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:19:31,565 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-NoLbe.epf [2022-09-20 22:19:31,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:19:31,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:19:31,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:19:31,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:19:31,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:19:31,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:19:31,605 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:19:31,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:19:31,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:19:31,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:19:31,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:19:31,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:19:31,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:19:31,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:19:31,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:19:31,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:19:31,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:19:31,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:19:31,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:19:31,609 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:19:31,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:19:31,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:19:31,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:19:31,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:19:31,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:19:31,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:19:31,863 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:19:31,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2022-09-20 22:19:31,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66c57571/c5d4040a6f2b43c5a2e96a4193e48f07/FLAG192eec8a6 [2022-09-20 22:19:32,434 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:19:32,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2022-09-20 22:19:32,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66c57571/c5d4040a6f2b43c5a2e96a4193e48f07/FLAG192eec8a6 [2022-09-20 22:19:32,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66c57571/c5d4040a6f2b43c5a2e96a4193e48f07 [2022-09-20 22:19:32,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:19:32,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:19:32,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:19:32,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:19:32,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:19:32,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:19:32" (1/1) ... [2022-09-20 22:19:32,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782c181b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:32, skipping insertion in model container [2022-09-20 22:19:32,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:19:32" (1/1) ... [2022-09-20 22:19:32,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:19:32,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:19:33,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2022-09-20 22:19:33,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:19:33,235 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:19:33,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2022-09-20 22:19:33,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:19:33,302 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:19:33,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33 WrapperNode [2022-09-20 22:19:33,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:19:33,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:19:33,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:19:33,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:19:33,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,339 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-09-20 22:19:33,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:19:33,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:19:33,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:19:33,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:19:33,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:19:33,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:19:33,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:19:33,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:19:33,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (1/1) ... [2022-09-20 22:19:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:19:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:19:33,395 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) [2022-09-20 22:19:33,399 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 [2022-09-20 22:19:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:19:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:19:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:19:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:19:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:19:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:19:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:19:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:19:33,429 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:19:33,514 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:19:33,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:19:33,702 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:19:33,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:19:33,709 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:19:33,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:19:33 BoogieIcfgContainer [2022-09-20 22:19:33,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:19:33,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:19:33,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:19:33,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:19:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:19:32" (1/3) ... [2022-09-20 22:19:33,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c487cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:19:33, skipping insertion in model container [2022-09-20 22:19:33,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:19:33" (2/3) ... [2022-09-20 22:19:33,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c487cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:19:33, skipping insertion in model container [2022-09-20 22:19:33,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:19:33" (3/3) ... [2022-09-20 22:19:33,728 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2022-09-20 22:19:33,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:19:33,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:19:33,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:19:33,809 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:19:33,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-09-20 22:19:33,886 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-09-20 22:19:33,886 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:19:33,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-09-20 22:19:33,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2022-09-20 22:19:33,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2022-09-20 22:19:33,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:19:33,912 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;@18c1a85e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:19:33,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:19:33,945 INFO L130 PetriNetUnfolder]: 0/79 cut-off events. [2022-09-20 22:19:33,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:19:33,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:19:33,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:19:33,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:19:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:19:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1215155975, now seen corresponding path program 1 times [2022-09-20 22:19:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:19:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133952418] [2022-09-20 22:19:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:19:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:19:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:19:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:19:34,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:19:34,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133952418] [2022-09-20 22:19:34,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133952418] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:19:34,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:19:34,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:19:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692132231] [2022-09-20 22:19:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:19:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:19:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:19:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:19:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:19:34,549 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 93 [2022-09-20 22:19:34,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2022-09-20 22:19:34,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:19:34,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 93 [2022-09-20 22:19:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:19:34,708 INFO L130 PetriNetUnfolder]: 6/144 cut-off events. [2022-09-20 22:19:34,708 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-09-20 22:19:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 144 events. 6/144 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 3 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 117. Up to 17 conditions per place. [2022-09-20 22:19:34,711 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 4 changer transitions 5/88 dead transitions. [2022-09-20 22:19:34,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 235 flow [2022-09-20 22:19:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:19:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:19:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2022-09-20 22:19:34,727 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.880184331797235 [2022-09-20 22:19:34,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2022-09-20 22:19:34,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2022-09-20 22:19:34,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:19:34,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2022-09-20 22:19:34,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 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) [2022-09-20 22:19:34,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-09-20 22:19:34,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-09-20 22:19:34,750 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 172 flow. Second operand 7 states and 573 transitions. [2022-09-20 22:19:34,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 235 flow [2022-09-20 22:19:34,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:19:34,756 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 189 flow [2022-09-20 22:19:34,758 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2022-09-20 22:19:34,760 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2022-09-20 22:19:34,761 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 189 flow [2022-09-20 22:19:34,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2022-09-20 22:19:34,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:19:34,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:19:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:19:34,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:19:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:19:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1080671277, now seen corresponding path program 2 times [2022-09-20 22:19:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:19:34,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154698202] [2022-09-20 22:19:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:19:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:19:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:19:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:19:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:19:34,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154698202] [2022-09-20 22:19:34,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154698202] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:19:34,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:19:34,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:19:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690477700] [2022-09-20 22:19:34,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:19:34,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:19:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:19:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:19:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:19:34,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2022-09-20 22:19:34,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-09-20 22:19:34,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:19:34,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2022-09-20 22:19:34,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:19:34,929 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-09-20 22:19:34,929 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-20 22:19:34,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 148 events. 10/148 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 341 event pairs, 6 based on Foata normal form. 8/156 useless extension candidates. Maximal degree in co-relation 216. Up to 31 conditions per place. [2022-09-20 22:19:34,931 INFO L137 encePairwiseOnDemand]: 85/93 looper letters, 14 selfloop transitions, 8 changer transitions 1/83 dead transitions. [2022-09-20 22:19:34,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 234 flow [2022-09-20 22:19:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:19:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:19:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2022-09-20 22:19:34,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2022-09-20 22:19:34,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2022-09-20 22:19:34,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2022-09-20 22:19:34,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:19:34,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2022-09-20 22:19:34,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-09-20 22:19:34,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2022-09-20 22:19:34,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2022-09-20 22:19:34,935 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 189 flow. Second operand 3 states and 239 transitions. [2022-09-20 22:19:34,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 234 flow [2022-09-20 22:19:34,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 228 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:19:34,938 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 188 flow [2022-09-20 22:19:34,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2022-09-20 22:19:34,939 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2022-09-20 22:19:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 188 flow [2022-09-20 22:19:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-09-20 22:19:34,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:19:34,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:19:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:19:34,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:19:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:19:34,955 INFO L85 PathProgramCache]: Analyzing trace with hash 708274045, now seen corresponding path program 3 times [2022-09-20 22:19:34,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:19:34,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399317469] [2022-09-20 22:19:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:19:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:19:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:19:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:19:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:19:35,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399317469] [2022-09-20 22:19:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399317469] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:19:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:19:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:19:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436821024] [2022-09-20 22:19:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:19:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:19:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:19:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:19:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:19:35,112 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 93 [2022-09-20 22:19:35,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2022-09-20 22:19:35,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:19:35,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 93 [2022-09-20 22:19:35,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:19:35,192 INFO L130 PetriNetUnfolder]: 6/134 cut-off events. [2022-09-20 22:19:35,192 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-09-20 22:19:35,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 134 events. 6/134 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 2 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 126. Up to 13 conditions per place. [2022-09-20 22:19:35,193 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2022-09-20 22:19:35,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 224 flow [2022-09-20 22:19:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:19:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:19:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2022-09-20 22:19:35,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8725038402457758 [2022-09-20 22:19:35,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2022-09-20 22:19:35,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2022-09-20 22:19:35,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:19:35,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2022-09-20 22:19:35,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 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) [2022-09-20 22:19:35,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-09-20 22:19:35,200 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-09-20 22:19:35,200 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 188 flow. Second operand 7 states and 568 transitions. [2022-09-20 22:19:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 224 flow [2022-09-20 22:19:35,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 212 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-20 22:19:35,203 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2022-09-20 22:19:35,204 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2022-09-20 22:19:35,206 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2022-09-20 22:19:35,206 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2022-09-20 22:19:35,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2022-09-20 22:19:35,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 22:19:35,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 22:19:35,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 22:19:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:19:35,210 INFO L444 BasicCegarLoop]: Path program histogram: [3] [2022-09-20 22:19:35,213 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:19:35,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:19:35,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:19:35 BasicIcfg [2022-09-20 22:19:35,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:19:35,224 INFO L158 Benchmark]: Toolchain (without parser) took 2299.32ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 153.2MB in the beginning and 211.9MB in the end (delta: -58.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,224 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:19:35,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.87ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 152.9MB in the beginning and 229.7MB in the end (delta: -76.8MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.48ms. Allocated memory is still 270.5MB. Free memory was 229.7MB in the beginning and 227.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,229 INFO L158 Benchmark]: Boogie Preprocessor took 21.94ms. Allocated memory is still 270.5MB. Free memory was 227.7MB in the beginning and 226.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,229 INFO L158 Benchmark]: RCFGBuilder took 348.21ms. Allocated memory is still 270.5MB. Free memory was 226.6MB in the beginning and 213.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,229 INFO L158 Benchmark]: TraceAbstraction took 1508.42ms. Allocated memory is still 270.5MB. Free memory was 212.5MB in the beginning and 211.9MB in the end (delta: 545.0kB). Peak memory consumption was 1.6MB. Max. memory is 8.0GB. [2022-09-20 22:19:35,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 378.87ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 152.9MB in the beginning and 229.7MB in the end (delta: -76.8MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.48ms. Allocated memory is still 270.5MB. Free memory was 229.7MB in the beginning and 227.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.94ms. Allocated memory is still 270.5MB. Free memory was 227.7MB in the beginning and 226.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 348.21ms. Allocated memory is still 270.5MB. Free memory was 226.6MB in the beginning and 213.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1508.42ms. Allocated memory is still 270.5MB. Free memory was 212.5MB in the beginning and 211.9MB in the end (delta: 545.0kB). Peak memory consumption was 1.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 727]: 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, 123 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 22 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=1, InterpolantAutomatonStates: 17, 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, 0.4s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 807 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! [2022-09-20 22:19:35,272 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...