/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:50:06,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:50:06,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:50:06,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:50:06,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:50:06,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:50:06,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:50:06,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:50:06,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:50:06,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:50:06,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:50:06,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:50:06,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:50:06,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:50:06,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:50:06,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:50:06,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:50:06,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:50:06,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:50:06,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:50:06,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:50:06,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:50:06,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:50:06,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:50:06,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:50:06,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:50:06,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:50:06,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:50:06,601 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 01:50:06,613 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:50:06,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:50:06,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:50:06,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:50:06,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:50:06,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:50:06,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:50:06,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:50:06,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:06,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:50:06,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:50:06,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:50:06,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:50:06,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:50:06,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:50:06,800 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:50:06,801 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:50:06,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-01-28 01:50:07,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:50:07,936 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:50:07,936 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-01-28 01:50:07,943 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f577ee9/26556a52bde34c2d828645a86dc8e214/FLAG23d66184e [2023-01-28 01:50:07,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f577ee9/26556a52bde34c2d828645a86dc8e214 [2023-01-28 01:50:07,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:50:07,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:50:07,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:07,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:50:07,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:50:07,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:07" (1/1) ... [2023-01-28 01:50:07,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b54bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:07, skipping insertion in model container [2023-01-28 01:50:07,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:07" (1/1) ... [2023-01-28 01:50:07,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:50:08,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:50:08,200 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-01-28 01:50:08,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:08,227 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:50:08,267 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-01-28 01:50:08,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:08,310 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:50:08,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08 WrapperNode [2023-01-28 01:50:08,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:08,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:08,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:50:08,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:50:08,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,351 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-01-28 01:50:08,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:08,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:50:08,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:50:08,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:50:08,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:50:08,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:50:08,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:50:08,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:50:08,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (1/1) ... [2023-01-28 01:50:08,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:50:08,408 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 01:50:08,410 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 01:50:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:50:08,434 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:50:08,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:50:08,435 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 01:50:08,591 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:50:08,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:50:08,766 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:50:08,770 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:50:08,771 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-28 01:50:08,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:08 BoogieIcfgContainer [2023-01-28 01:50:08,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:50:08,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:50:08,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:50:08,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:50:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:50:07" (1/3) ... [2023-01-28 01:50:08,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9d04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:08, skipping insertion in model container [2023-01-28 01:50:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:08" (2/3) ... [2023-01-28 01:50:08,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9d04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:08, skipping insertion in model container [2023-01-28 01:50:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:08" (3/3) ... [2023-01-28 01:50:08,777 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2023-01-28 01:50:08,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:50:08,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:50:08,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:50:08,871 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:50:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 104 transitions, 216 flow [2023-01-28 01:50:08,953 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2023-01-28 01:50:08,953 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:50:08,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-01-28 01:50:08,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 104 transitions, 216 flow [2023-01-28 01:50:08,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 191 flow [2023-01-28 01:50:08,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:08,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 94 transitions, 191 flow [2023-01-28 01:50:08,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 94 transitions, 191 flow [2023-01-28 01:50:08,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 191 flow [2023-01-28 01:50:09,001 INFO L130 PetriNetUnfolder]: 9/94 cut-off events. [2023-01-28 01:50:09,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:09,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 9/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-01-28 01:50:09,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-01-28 01:50:11,463 INFO L134 LiptonReduction]: Checked pairs total: 3001 [2023-01-28 01:50:11,463 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-01-28 01:50:11,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 01:50:11,487 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;@432ee36e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:11,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:50:11,497 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 01:50:11,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:11,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:11,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 01:50:11,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:11,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 366890863, now seen corresponding path program 1 times [2023-01-28 01:50:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:11,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678892901] [2023-01-28 01:50:11,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:11,818 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 01:50:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678892901] [2023-01-28 01:50:11,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678892901] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:11,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:11,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 01:50:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913670290] [2023-01-28 01:50:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:50:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:50:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:50:11,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 184 [2023-01-28 01:50:11,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 01:50:11,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:11,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 184 [2023-01-28 01:50:11,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:11,928 INFO L130 PetriNetUnfolder]: 54/144 cut-off events. [2023-01-28 01:50:11,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:11,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 144 events. 54/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 523 event pairs, 15 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 273. Up to 75 conditions per place. [2023-01-28 01:50:11,931 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 13 selfloop transitions, 2 changer transitions 12/28 dead transitions. [2023-01-28 01:50:11,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 111 flow [2023-01-28 01:50:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:50:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:50:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-01-28 01:50:11,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438405797101449 [2023-01-28 01:50:11,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-01-28 01:50:11,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-01-28 01:50:11,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:11,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-01-28 01:50:11,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 01:50:11,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 01:50:11,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 01:50:11,959 INFO L175 Difference]: Start difference. First operand has 22 places, 26 transitions, 55 flow. Second operand 3 states and 245 transitions. [2023-01-28 01:50:11,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 111 flow [2023-01-28 01:50:11,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:50:11,962 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 40 flow [2023-01-28 01:50:11,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-01-28 01:50:11,969 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-01-28 01:50:11,969 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 40 flow [2023-01-28 01:50:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 01:50:11,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:11,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:50:11,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:11,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2098203577, now seen corresponding path program 1 times [2023-01-28 01:50:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607946213] [2023-01-28 01:50:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:12,069 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 01:50:12,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607946213] [2023-01-28 01:50:12,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607946213] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:12,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:12,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:50:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313347661] [2023-01-28 01:50:12,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:12,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:50:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:50:12,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:50:12,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2023-01-28 01:50:12,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 01:50:12,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:12,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2023-01-28 01:50:12,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:12,113 INFO L130 PetriNetUnfolder]: 13/47 cut-off events. [2023-01-28 01:50:12,113 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 01:50:12,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 47 events. 13/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 5/52 useless extension candidates. Maximal degree in co-relation 102. Up to 26 conditions per place. [2023-01-28 01:50:12,114 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 14 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-01-28 01:50:12,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 94 flow [2023-01-28 01:50:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:50:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:50:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-01-28 01:50:12,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2023-01-28 01:50:12,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-01-28 01:50:12,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-01-28 01:50:12,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:12,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-01-28 01:50:12,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 01:50:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 01:50:12,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 01:50:12,120 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 40 flow. Second operand 3 states and 249 transitions. [2023-01-28 01:50:12,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 94 flow [2023-01-28 01:50:12,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 01:50:12,122 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 59 flow [2023-01-28 01:50:12,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-01-28 01:50:12,124 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-01-28 01:50:12,124 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 59 flow [2023-01-28 01:50:12,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 01:50:12,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:12,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:12,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:50:12,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:12,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 847096169, now seen corresponding path program 1 times [2023-01-28 01:50:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755569251] [2023-01-28 01:50:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:12,272 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 01:50:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:12,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755569251] [2023-01-28 01:50:12,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755569251] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:12,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:50:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721957370] [2023-01-28 01:50:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 01:50:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 01:50:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 01:50:12,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 184 [2023-01-28 01:50:12,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 01:50:12,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:12,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 184 [2023-01-28 01:50:12,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:12,300 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2023-01-28 01:50:12,301 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:50:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 16 events. 0/16 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/20 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-01-28 01:50:12,301 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 9 selfloop transitions, 4 changer transitions 0/14 dead transitions. [2023-01-28 01:50:12,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 75 flow [2023-01-28 01:50:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 01:50:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 01:50:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-01-28 01:50:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39945652173913043 [2023-01-28 01:50:12,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-01-28 01:50:12,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-01-28 01:50:12,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:12,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-01-28 01:50:12,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 01:50:12,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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 01:50:12,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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 01:50:12,307 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 59 flow. Second operand 4 states and 294 transitions. [2023-01-28 01:50:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 75 flow [2023-01-28 01:50:12,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 63 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 01:50:12,308 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 45 flow [2023-01-28 01:50:12,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-01-28 01:50:12,309 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-01-28 01:50:12,309 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 45 flow [2023-01-28 01:50:12,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 01:50:12,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:12,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:12,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:50:12,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:12,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1858962138, now seen corresponding path program 1 times [2023-01-28 01:50:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:12,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622784119] [2023-01-28 01:50:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:12,573 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 01:50:12,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:12,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622784119] [2023-01-28 01:50:12,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622784119] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:12,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:12,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 01:50:12,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676122578] [2023-01-28 01:50:12,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:12,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 01:50:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 01:50:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 01:50:12,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 184 [2023-01-28 01:50:12,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 45 flow. Second operand has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 01:50:12,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:12,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 184 [2023-01-28 01:50:12,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:12,641 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 01:50:12,641 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:50:12,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-01-28 01:50:12,642 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-01-28 01:50:12,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 76 flow [2023-01-28 01:50:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 01:50:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 01:50:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 527 transitions. [2023-01-28 01:50:12,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580163043478261 [2023-01-28 01:50:12,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 527 transitions. [2023-01-28 01:50:12,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 527 transitions. [2023-01-28 01:50:12,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:12,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 527 transitions. [2023-01-28 01:50:12,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.875) internal successors, (527), 8 states have internal predecessors, (527), 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 01:50:12,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 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 01:50:12,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 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 01:50:12,650 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 45 flow. Second operand 8 states and 527 transitions. [2023-01-28 01:50:12,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 76 flow [2023-01-28 01:50:12,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 01:50:12,651 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-01-28 01:50:12,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-01-28 01:50:12,652 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-01-28 01:50:12,652 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-01-28 01:50:12,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 01:50:12,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 01:50:12,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:50:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:50:12,655 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-01-28 01:50:12,658 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 01:50:12,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 01:50:12,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:50:12 BasicIcfg [2023-01-28 01:50:12,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 01:50:12,663 INFO L158 Benchmark]: Toolchain (without parser) took 4701.05ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 348.6MB in the beginning and 221.1MB in the end (delta: 127.5MB). Peak memory consumption was 208.0MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,663 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:50:12,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.07ms. Allocated memory is still 390.1MB. Free memory was 348.3MB in the beginning and 328.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.93ms. Allocated memory is still 390.1MB. Free memory was 328.7MB in the beginning and 326.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,664 INFO L158 Benchmark]: Boogie Preprocessor took 27.89ms. Allocated memory is still 390.1MB. Free memory was 326.6MB in the beginning and 325.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,664 INFO L158 Benchmark]: RCFGBuilder took 392.12ms. Allocated memory is still 390.1MB. Free memory was 325.0MB in the beginning and 310.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,664 INFO L158 Benchmark]: TraceAbstraction took 3888.56ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 309.3MB in the beginning and 221.1MB in the end (delta: 88.1MB). Peak memory consumption was 168.2MB. Max. memory is 16.0GB. [2023-01-28 01:50:12,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 348.07ms. Allocated memory is still 390.1MB. Free memory was 348.3MB in the beginning and 328.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.93ms. Allocated memory is still 390.1MB. Free memory was 328.7MB in the beginning and 326.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.89ms. Allocated memory is still 390.1MB. Free memory was 326.6MB in the beginning and 325.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 392.12ms. Allocated memory is still 390.1MB. Free memory was 325.0MB in the beginning and 310.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3888.56ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 309.3MB in the beginning and 221.1MB in the end (delta: 88.1MB). Peak memory consumption was 168.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 89 PlacesBefore, 22 PlacesAfterwards, 94 TransitionsBefore, 26 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 3001 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1396, independent: 1249, independent conditional: 0, independent unconditional: 1249, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 807, independent: 769, independent conditional: 0, independent unconditional: 769, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1396, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 807, unknown conditional: 0, unknown unconditional: 807] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: 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 3 procedures, 125 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 0 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 01:50:12,680 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...