/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_87-lists_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:01:13,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:01:13,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:01:13,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:01:13,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:01:13,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:01:13,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:01:13,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:01:13,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:01:13,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:01:13,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:01:13,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:01:13,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:01:13,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:01:13,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:01:13,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:01:13,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:01:13,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:01:13,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:01:13,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:01:13,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:01:13,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:01:13,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:01:13,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:01:13,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:01:13,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:01:13,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:01:13,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:01:13,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:01:13,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:01:13,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:01:13,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:01:13,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:01:13,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:01:13,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:01:13,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:01:13,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:01:13,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:01:13,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:01:13,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:01:13,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:01:13,135 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 02:01:13,155 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:01:13,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:01:13,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:01:13,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:01:13,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:01:13,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:01:13,156 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:01:13,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:01:13,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:01:13,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:13,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:01:13,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:01:13,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:01:13,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:01:13,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:01:13,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:01:13,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:01:13,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:01:13,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:01:13,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:01:13,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:01:13,341 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:01:13,341 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:01:13,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-01-28 02:01:14,320 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:01:14,527 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:01:14,528 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-01-28 02:01:14,537 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adaafa2a/c3aee3f9951943da96703cb19cfdb3fc/FLAG74f8a26f0 [2023-01-28 02:01:14,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adaafa2a/c3aee3f9951943da96703cb19cfdb3fc [2023-01-28 02:01:14,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:01:14,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:01:14,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:14,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:01:14,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:01:14,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:14" (1/1) ... [2023-01-28 02:01:14,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160f1143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:14, skipping insertion in model container [2023-01-28 02:01:14,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:14" (1/1) ... [2023-01-28 02:01:14,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:01:14,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:01:14,873 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_87-lists_racefree.i[47038,47051] [2023-01-28 02:01:14,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:14,970 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:01:15,006 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_87-lists_racefree.i[47038,47051] [2023-01-28 02:01:15,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:15,045 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:01:15,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15 WrapperNode [2023-01-28 02:01:15,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:15,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:15,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:01:15,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:01:15,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,083 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 228 [2023-01-28 02:01:15,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:15,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:01:15,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:01:15,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:01:15,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:01:15,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:01:15,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:01:15,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:01:15,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (1/1) ... [2023-01-28 02:01:15,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:15,137 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 02:01:15,148 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 02:01:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:01:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 02:01:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 02:01:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 02:01:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:01:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:01:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 02:01:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 02:01:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:01:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 02:01:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:01:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:01:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 02:01:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:01:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:01:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:01:15,181 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 02:01:15,351 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:01:15,352 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:01:15,594 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:01:15,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:01:15,601 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-28 02:01:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:15 BoogieIcfgContainer [2023-01-28 02:01:15,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:01:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:01:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:01:15,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:01:15,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:01:14" (1/3) ... [2023-01-28 02:01:15,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468aa8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:15, skipping insertion in model container [2023-01-28 02:01:15,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:15" (2/3) ... [2023-01-28 02:01:15,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468aa8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:15, skipping insertion in model container [2023-01-28 02:01:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:15" (3/3) ... [2023-01-28 02:01:15,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-01-28 02:01:15,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:01:15,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:01:15,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:01:15,718 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 02:01:15,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 02:01:15,892 INFO L130 PetriNetUnfolder]: 54/427 cut-off events. [2023-01-28 02:01:15,892 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-28 02:01:15,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 427 events. 54/427 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1691 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-01-28 02:01:15,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 02:01:15,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 227 transitions, 470 flow [2023-01-28 02:01:15,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:01:15,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 227 transitions, 470 flow [2023-01-28 02:01:15,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 227 transitions, 470 flow [2023-01-28 02:01:15,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 227 transitions, 470 flow [2023-01-28 02:01:15,978 INFO L130 PetriNetUnfolder]: 50/415 cut-off events. [2023-01-28 02:01:15,978 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-01-28 02:01:15,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 415 events. 50/415 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1613 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2023-01-28 02:01:15,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 15336 [2023-01-28 02:01:20,542 INFO L134 LiptonReduction]: Checked pairs total: 24023 [2023-01-28 02:01:20,542 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-01-28 02:01:20,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:01:20,556 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;@4d70fb3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:01:20,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 02:01:20,559 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-01-28 02:01:20,559 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:01:20,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:20,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-28 02:01:20,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:20,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1192865422, now seen corresponding path program 1 times [2023-01-28 02:01:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:20,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001120861] [2023-01-28 02:01:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001120861] [2023-01-28 02:01:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001120861] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:01:20,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:01:20,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:01:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049528446] [2023-01-28 02:01:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:01:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:01:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:01:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:01:20,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:01:20,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 02:01:20,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:20,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:01:20,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:01:21,190 INFO L130 PetriNetUnfolder]: 2806/4839 cut-off events. [2023-01-28 02:01:21,190 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-01-28 02:01:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9314 conditions, 4839 events. 2806/4839 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 28373 event pairs, 2599 based on Foata normal form. 240/4248 useless extension candidates. Maximal degree in co-relation 8300. Up to 4402 conditions per place. [2023-01-28 02:01:21,201 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 36 selfloop transitions, 2 changer transitions 9/56 dead transitions. [2023-01-28 02:01:21,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 222 flow [2023-01-28 02:01:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:01:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:01:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-01-28 02:01:21,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2023-01-28 02:01:21,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-01-28 02:01:21,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-01-28 02:01:21,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:01:21,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-01-28 02:01:21,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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 02:01:21,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 02:01:21,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 02:01:21,230 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 148 flow. Second operand 3 states and 650 transitions. [2023-01-28 02:01:21,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 222 flow [2023-01-28 02:01:21,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:01:21,236 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 114 flow [2023-01-28 02:01:21,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-01-28 02:01:21,241 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-01-28 02:01:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 114 flow [2023-01-28 02:01:21,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 02:01:21,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:21,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-01-28 02:01:21,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:01:21,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:21,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 450522637, now seen corresponding path program 1 times [2023-01-28 02:01:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227860871] [2023-01-28 02:01:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227860871] [2023-01-28 02:01:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227860871] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:01:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996797070] [2023-01-28 02:01:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:21,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:01:21,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:21,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:01:21,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:01:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:21,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 02:01:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:01:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:21,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:01:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:21,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996797070] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:01:21,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:01:21,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 02:01:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367293098] [2023-01-28 02:01:21,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:01:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:01:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:01:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:01:21,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:01:21,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 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 02:01:21,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:21,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:01:21,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:01:21,771 INFO L130 PetriNetUnfolder]: 1126/2034 cut-off events. [2023-01-28 02:01:21,771 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 02:01:21,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 2034 events. 1126/2034 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10411 event pairs, 1053 based on Foata normal form. 0/1722 useless extension candidates. Maximal degree in co-relation 3896. Up to 1829 conditions per place. [2023-01-28 02:01:21,777 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 36 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-01-28 02:01:21,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 208 flow [2023-01-28 02:01:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:01:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:01:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1226 transitions. [2023-01-28 02:01:21,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983739837398374 [2023-01-28 02:01:21,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1226 transitions. [2023-01-28 02:01:21,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1226 transitions. [2023-01-28 02:01:21,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:01:21,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1226 transitions. [2023-01-28 02:01:21,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.33333333333334) internal successors, (1226), 6 states have internal predecessors, (1226), 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 02:01:21,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 02:01:21,786 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 02:01:21,786 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 114 flow. Second operand 6 states and 1226 transitions. [2023-01-28 02:01:21,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 208 flow [2023-01-28 02:01:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:01:21,788 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 146 flow [2023-01-28 02:01:21,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-01-28 02:01:21,788 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-01-28 02:01:21,789 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 146 flow [2023-01-28 02:01:21,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 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 02:01:21,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:21,789 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-01-28 02:01:21,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 02:01:21,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:01:21,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:21,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1554636750, now seen corresponding path program 2 times [2023-01-28 02:01:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598139272] [2023-01-28 02:01:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598139272] [2023-01-28 02:01:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598139272] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:01:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745610447] [2023-01-28 02:01:22,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:01:22,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:01:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:22,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:01:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:01:22,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:01:22,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:01:22,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 02:01:22,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:01:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:22,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:01:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745610447] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:01:22,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:01:22,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 02:01:22,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688724968] [2023-01-28 02:01:22,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:01:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:01:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:01:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:01:22,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:01:22,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 146 flow. Second operand has 13 states, 13 states have (on average 198.30769230769232) internal successors, (2578), 13 states have internal predecessors, (2578), 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 02:01:22,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:22,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:01:22,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:01:22,589 INFO L130 PetriNetUnfolder]: 1126/2040 cut-off events. [2023-01-28 02:01:22,589 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-28 02:01:22,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 2040 events. 1126/2040 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10403 event pairs, 1053 based on Foata normal form. 6/1735 useless extension candidates. Maximal degree in co-relation 3887. Up to 1829 conditions per place. [2023-01-28 02:01:22,595 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 36 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2023-01-28 02:01:22,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 276 flow [2023-01-28 02:01:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:01:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:01:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2417 transitions. [2023-01-28 02:01:22,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491260162601626 [2023-01-28 02:01:22,600 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2417 transitions. [2023-01-28 02:01:22,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2417 transitions. [2023-01-28 02:01:22,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:01:22,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2417 transitions. [2023-01-28 02:01:22,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.41666666666666) internal successors, (2417), 12 states have internal predecessors, (2417), 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 02:01:22,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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 02:01:22,613 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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 02:01:22,613 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 146 flow. Second operand 12 states and 2417 transitions. [2023-01-28 02:01:22,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 276 flow [2023-01-28 02:01:22,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 02:01:22,615 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 216 flow [2023-01-28 02:01:22,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-01-28 02:01:22,615 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2023-01-28 02:01:22,615 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 216 flow [2023-01-28 02:01:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 198.30769230769232) internal successors, (2578), 13 states have internal predecessors, (2578), 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 02:01:22,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:22,616 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-01-28 02:01:22,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:01:22,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 02:01:22,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:22,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash 279626322, now seen corresponding path program 3 times [2023-01-28 02:01:22,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621718968] [2023-01-28 02:01:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:23,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621718968] [2023-01-28 02:01:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621718968] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:01:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987260844] [2023-01-28 02:01:23,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:01:23,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:01:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:23,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:01:23,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:04:21,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-28 02:04:21,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:04:21,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 02:04:21,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:04:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:21,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:04:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987260844] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:04:22,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:04:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-01-28 02:04:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711047999] [2023-01-28 02:04:22,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:04:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 02:04:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:04:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 02:04:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-01-28 02:04:22,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:04:22,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 216 flow. Second operand has 25 states, 25 states have (on average 198.16) internal successors, (4954), 25 states have internal predecessors, (4954), 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 02:04:22,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:04:22,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:04:22,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:04:22,370 INFO L130 PetriNetUnfolder]: 1126/2052 cut-off events. [2023-01-28 02:04:22,371 INFO L131 PetriNetUnfolder]: For 470/470 co-relation queries the response was YES. [2023-01-28 02:04:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4030 conditions, 2052 events. 1126/2052 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10403 event pairs, 1053 based on Foata normal form. 12/1753 useless extension candidates. Maximal degree in co-relation 3893. Up to 1829 conditions per place. [2023-01-28 02:04:22,377 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 36 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2023-01-28 02:04:22,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 68 transitions, 430 flow [2023-01-28 02:04:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 02:04:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 02:04:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4799 transitions. [2023-01-28 02:04:22,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770325203252035 [2023-01-28 02:04:22,384 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4799 transitions. [2023-01-28 02:04:22,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4799 transitions. [2023-01-28 02:04:22,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:04:22,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4799 transitions. [2023-01-28 02:04:22,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.95833333333334) internal successors, (4799), 24 states have internal predecessors, (4799), 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 02:04:22,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 410.0) internal successors, (10250), 25 states have internal predecessors, (10250), 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 02:04:22,401 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 410.0) internal successors, (10250), 25 states have internal predecessors, (10250), 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 02:04:22,401 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 216 flow. Second operand 24 states and 4799 transitions. [2023-01-28 02:04:22,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 68 transitions, 430 flow [2023-01-28 02:04:22,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 358 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-01-28 02:04:22,404 INFO L231 Difference]: Finished difference. Result has 104 places, 68 transitions, 336 flow [2023-01-28 02:04:22,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=336, PETRI_PLACES=104, PETRI_TRANSITIONS=68} [2023-01-28 02:04:22,405 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2023-01-28 02:04:22,405 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 68 transitions, 336 flow [2023-01-28 02:04:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 198.16) internal successors, (4954), 25 states have internal predecessors, (4954), 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 02:04:22,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:22,407 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-01-28 02:04:22,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:04:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:04:22,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:22,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1192738450, now seen corresponding path program 4 times [2023-01-28 02:04:22,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:22,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949522164] [2023-01-28 02:04:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:04:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:04:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949522164] [2023-01-28 02:04:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949522164] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:04:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486865479] [2023-01-28 02:04:23,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:04:23,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:04:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:04:23,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:04:23,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:04:23,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:04:23,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:04:23,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 02:04:23,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:04:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:23,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:04:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:24,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486865479] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:04:24,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:04:24,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-01-28 02:04:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96047847] [2023-01-28 02:04:24,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:04:24,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 02:04:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:04:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 02:04:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 02:04:24,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:04:24,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 68 transitions, 336 flow. Second operand has 49 states, 49 states have (on average 198.08163265306123) internal successors, (9706), 49 states have internal predecessors, (9706), 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 02:04:24,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:04:24,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:04:24,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:04:24,672 INFO L130 PetriNetUnfolder]: 1126/2076 cut-off events. [2023-01-28 02:04:24,672 INFO L131 PetriNetUnfolder]: For 5240/5240 co-relation queries the response was YES. [2023-01-28 02:04:24,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 2076 events. 1126/2076 cut-off events. For 5240/5240 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10410 event pairs, 1053 based on Foata normal form. 24/1789 useless extension candidates. Maximal degree in co-relation 3905. Up to 1829 conditions per place. [2023-01-28 02:04:24,682 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 36 selfloop transitions, 47 changer transitions 0/92 dead transitions. [2023-01-28 02:04:24,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 92 transitions, 694 flow [2023-01-28 02:04:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-28 02:04:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-28 02:04:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9563 transitions. [2023-01-28 02:04:24,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48592479674796746 [2023-01-28 02:04:24,697 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9563 transitions. [2023-01-28 02:04:24,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9563 transitions. [2023-01-28 02:04:24,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:04:24,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9563 transitions. [2023-01-28 02:04:24,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 199.22916666666666) internal successors, (9563), 48 states have internal predecessors, (9563), 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 02:04:24,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 410.0) internal successors, (20090), 49 states have internal predecessors, (20090), 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 02:04:24,733 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 410.0) internal successors, (20090), 49 states have internal predecessors, (20090), 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 02:04:24,734 INFO L175 Difference]: Start difference. First operand has 104 places, 68 transitions, 336 flow. Second operand 48 states and 9563 transitions. [2023-01-28 02:04:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 92 transitions, 694 flow [2023-01-28 02:04:24,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 92 transitions, 550 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-01-28 02:04:24,738 INFO L231 Difference]: Finished difference. Result has 164 places, 92 transitions, 576 flow [2023-01-28 02:04:24,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=576, PETRI_PLACES=164, PETRI_TRANSITIONS=92} [2023-01-28 02:04:24,739 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2023-01-28 02:04:24,739 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 92 transitions, 576 flow [2023-01-28 02:04:24,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 198.08163265306123) internal successors, (9706), 49 states have internal predecessors, (9706), 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 02:04:24,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:24,742 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-01-28 02:04:24,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:04:24,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:04:24,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:24,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:24,953 INFO L85 PathProgramCache]: Analyzing trace with hash 553162514, now seen corresponding path program 5 times [2023-01-28 02:04:24,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:24,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856422432] [2023-01-28 02:04:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:04:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:04:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:04:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856422432] [2023-01-28 02:04:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856422432] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:04:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131431277] [2023-01-28 02:04:27,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:04:27,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:04:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:04:27,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:04:27,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 02:15:56,495 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:15:56,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:15:57,511 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 [2023-01-28 02:15:57,695 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-28 02:15:57,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-28 02:15:57,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:15:57,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:15:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-01-28 02:15:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221362545] [2023-01-28 02:15:57,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-28 02:15:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 02:15:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:15:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 02:15:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 02:15:57,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 410 [2023-01-28 02:15:57,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 92 transitions, 576 flow. Second operand has 49 states, 49 states have (on average 198.0408163265306) internal successors, (9704), 49 states have internal predecessors, (9704), 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 02:15:57,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:15:57,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 410 [2023-01-28 02:15:57,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:15:57,744 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 02:15:57,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:15:57,744 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 02:15:57,745 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 02:15:57,745 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-01-28 02:15:57,746 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-01-28 02:15:57,747 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:15:57,747 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:15:57,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:15:57 BasicIcfg [2023-01-28 02:15:57,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:15:57,749 INFO L158 Benchmark]: Toolchain (without parser) took 883201.08ms. Allocated memory was 360.7MB in the beginning and 528.5MB in the end (delta: 167.8MB). Free memory was 305.7MB in the beginning and 262.0MB in the end (delta: 43.8MB). Peak memory consumption was 213.0MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,750 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:15:57,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.45ms. Allocated memory is still 360.7MB. Free memory was 305.5MB in the beginning and 313.5MB in the end (delta: -8.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.70ms. Allocated memory is still 360.7MB. Free memory was 312.9MB in the beginning and 310.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,750 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 360.7MB. Free memory was 310.2MB in the beginning and 307.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,750 INFO L158 Benchmark]: RCFGBuilder took 489.02ms. Allocated memory is still 360.7MB. Free memory was 307.7MB in the beginning and 283.5MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,751 INFO L158 Benchmark]: TraceAbstraction took 882145.54ms. Allocated memory was 360.7MB in the beginning and 528.5MB in the end (delta: 167.8MB). Free memory was 282.9MB in the beginning and 262.0MB in the end (delta: 21.0MB). Peak memory consumption was 188.4MB. Max. memory is 16.0GB. [2023-01-28 02:15:57,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 496.45ms. Allocated memory is still 360.7MB. Free memory was 305.5MB in the beginning and 313.5MB in the end (delta: -8.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.70ms. Allocated memory is still 360.7MB. Free memory was 312.9MB in the beginning and 310.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 360.7MB. Free memory was 310.2MB in the beginning and 307.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 489.02ms. Allocated memory is still 360.7MB. Free memory was 307.7MB in the beginning and 283.5MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 882145.54ms. Allocated memory was 360.7MB in the beginning and 528.5MB in the end (delta: 167.8MB). Free memory was 282.9MB in the beginning and 262.0MB in the end (delta: 21.0MB). Peak memory consumption was 188.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 209 PlacesBefore, 55 PlacesAfterwards, 227 TransitionsBefore, 66 TransitionsAfterwards, 15336 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 110 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 18 ConcurrentYvCompositions, 7 ChoiceCompositions, 181 TotalNumberOfCompositions, 24023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13906, independent: 13575, independent conditional: 0, independent unconditional: 13575, dependent: 331, dependent conditional: 0, dependent unconditional: 331, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7829, independent: 7744, independent conditional: 0, independent unconditional: 7744, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13906, independent: 5831, independent conditional: 0, independent unconditional: 5831, dependent: 246, dependent conditional: 0, dependent unconditional: 246, unknown: 7829, unknown conditional: 0, unknown unconditional: 7829] , Statistics on independence cache: Total cache size (in pairs): 464, Positive cache size: 428, Positive conditional cache size: 0, Positive unconditional cache size: 428, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 315 locations, 4 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: 882.0s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 637 IncrementalHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.2s SsaConstructionTime, 179.0s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown