/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:16:31,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:16:31,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:16:31,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:16:31,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:16:31,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:16:31,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:16:31,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:16:31,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:16:31,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:16:31,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:16:31,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:16:31,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:16:31,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:16:31,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:16:31,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:16:31,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:16:31,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:16:31,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:16:31,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:16:31,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:16:31,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:16:31,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:16:31,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:16:31,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:16:31,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:16:31,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:16:31,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:16:31,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:16:31,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:16:31,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:16:31,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:16:31,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:16:31,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:16:31,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:16:31,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:16:31,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:16:31,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:16:31,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:16:31,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:16:31,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:16:31,908 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 08:16:31,929 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:16:31,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:16:31,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:16:31,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:16:31,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:16:31,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:16:31,931 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:16:31,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:16:31,931 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:16:31,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:16:31,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:16:31,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:16:31,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:16:31,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:16:31,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:16:31,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:16:31,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:16:31,934 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:16:32,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:16:32,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:16:32,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:16:32,103 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:16:32,103 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:16:32,104 INFO L432 ainManager$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 08:16:33,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:16:33,323 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:16:33,323 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-01-28 08:16:33,337 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366e3ef1c/146cc058ab2647b09b4487724e177e6e/FLAG055c85755 [2023-01-28 08:16:33,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366e3ef1c/146cc058ab2647b09b4487724e177e6e [2023-01-28 08:16:33,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:16:33,353 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:16:33,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:16:33,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:16:33,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:16:33,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f03e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33, skipping insertion in model container [2023-01-28 08:16:33,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:16:33,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:16:33,725 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 08:16:33,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:16:33,814 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:16:33,840 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 08:16:33,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:16:33,915 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:16:33,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33 WrapperNode [2023-01-28 08:16:33,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:16:33,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:16:33,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:16:33,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:16:33,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,978 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 228 [2023-01-28 08:16:33,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:16:33,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:16:33,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:16:33,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:16:33,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:33,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:16:34,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:16:34,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:16:34,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:16:34,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (1/1) ... [2023-01-28 08:16:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:16:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:34,042 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 08:16:34,060 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 08:16:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:16:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 08:16:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 08:16:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 08:16:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:16:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:16:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 08:16:34,101 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 08:16:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:16:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:16:34,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:16:34,107 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 08:16:34,235 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:16:34,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:16:34,542 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:16:34,549 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:16:34,549 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-28 08:16:34,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:16:34 BoogieIcfgContainer [2023-01-28 08:16:34,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:16:34,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:16:34,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:16:34,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:16:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:16:33" (1/3) ... [2023-01-28 08:16:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12795b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:16:34, skipping insertion in model container [2023-01-28 08:16:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:33" (2/3) ... [2023-01-28 08:16:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12795b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:16:34, skipping insertion in model container [2023-01-28 08:16:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:16:34" (3/3) ... [2023-01-28 08:16:34,561 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-01-28 08:16:34,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:16:34,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:16:34,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:16:34,631 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 08:16:34,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 08:16:34,754 INFO L130 PetriNetUnfolder]: 54/427 cut-off events. [2023-01-28 08:16:34,755 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-28 08:16:34,764 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 08:16:34,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 08:16:34,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 226 transitions, 466 flow [2023-01-28 08:16:34,775 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:16:34,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 226 transitions, 466 flow [2023-01-28 08:16:34,790 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 226 transitions, 466 flow [2023-01-28 08:16:34,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 226 transitions, 466 flow [2023-01-28 08:16:34,853 INFO L130 PetriNetUnfolder]: 50/414 cut-off events. [2023-01-28 08:16:34,853 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 08:16:34,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 414 events. 50/414 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1592 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2023-01-28 08:16:34,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 15278 [2023-01-28 08:16:39,051 INFO L134 LiptonReduction]: Checked pairs total: 23287 [2023-01-28 08:16:39,051 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-01-28 08:16:39,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:16:39,091 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;@1a660ee1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:16:39,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 08:16:39,098 INFO L130 PetriNetUnfolder]: 8/79 cut-off events. [2023-01-28 08:16:39,099 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 08:16:39,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:39,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:16:39,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:16:39,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -649298106, now seen corresponding path program 1 times [2023-01-28 08:16:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:39,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966306929] [2023-01-28 08:16:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:16:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966306929] [2023-01-28 08:16:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966306929] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:16:39,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:16:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:16:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885093916] [2023-01-28 08:16:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:16:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:16:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:16:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:16:39,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 409 [2023-01-28 08:16:39,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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 08:16:39,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:39,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 409 [2023-01-28 08:16:39,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:39,919 INFO L130 PetriNetUnfolder]: 3149/5388 cut-off events. [2023-01-28 08:16:39,920 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-01-28 08:16:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10378 conditions, 5388 events. 3149/5388 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 31127 event pairs, 2924 based on Foata normal form. 267/4740 useless extension candidates. Maximal degree in co-relation 9366. Up to 4918 conditions per place. [2023-01-28 08:16:39,934 INFO L137 encePairwiseOnDemand]: 395/409 looper letters, 36 selfloop transitions, 2 changer transitions 14/55 dead transitions. [2023-01-28 08:16:39,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 220 flow [2023-01-28 08:16:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:16:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:16:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-01-28 08:16:39,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530562347188264 [2023-01-28 08:16:39,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-01-28 08:16:39,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-01-28 08:16:39,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:39,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-01-28 08:16:39,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 08:16:39,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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 08:16:39,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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 08:16:39,956 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 144 flow. Second operand 3 states and 651 transitions. [2023-01-28 08:16:39,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 220 flow [2023-01-28 08:16:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:16:39,961 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 103 flow [2023-01-28 08:16:39,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-01-28 08:16:39,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-01-28 08:16:39,965 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 103 flow [2023-01-28 08:16:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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 08:16:39,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:39,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:16:39,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:16:39,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:16:39,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1812130781, now seen corresponding path program 1 times [2023-01-28 08:16:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:39,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53371371] [2023-01-28 08:16:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:16:40,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:40,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53371371] [2023-01-28 08:16:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53371371] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:40,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919585107] [2023-01-28 08:16:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:40,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:40,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:40,080 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 08:16:40,107 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 08:16:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:40,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-01-28 08:16:40,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:16:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:40,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:16:40,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919585107] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:16:40,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:16:40,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-01-28 08:16:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37516519] [2023-01-28 08:16:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:16:40,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:16:40,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:16:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:16:40,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 409 [2023-01-28 08:16:40,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 08:16:40,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:40,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 409 [2023-01-28 08:16:40,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:40,445 INFO L130 PetriNetUnfolder]: 1468/2480 cut-off events. [2023-01-28 08:16:40,446 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 08:16:40,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4928 conditions, 2480 events. 1468/2480 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12776 event pairs, 640 based on Foata normal form. 0/2091 useless extension candidates. Maximal degree in co-relation 4915. Up to 2370 conditions per place. [2023-01-28 08:16:40,455 INFO L137 encePairwiseOnDemand]: 406/409 looper letters, 44 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-01-28 08:16:40,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 215 flow [2023-01-28 08:16:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:16:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:16:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-01-28 08:16:40,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224123879380603 [2023-01-28 08:16:40,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-01-28 08:16:40,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-01-28 08:16:40,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:40,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-01-28 08:16:40,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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 08:16:40,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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 08:16:40,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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 08:16:40,462 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 103 flow. Second operand 3 states and 641 transitions. [2023-01-28 08:16:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 215 flow [2023-01-28 08:16:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 211 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 08:16:40,463 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 107 flow [2023-01-28 08:16:40,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-01-28 08:16:40,465 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-01-28 08:16:40,465 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 107 flow [2023-01-28 08:16:40,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 08:16:40,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:40,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:16:40,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 08:16:40,671 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 08:16:40,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:16:40,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -783143084, now seen corresponding path program 1 times [2023-01-28 08:16:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:40,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516139816] [2023-01-28 08:16:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516139816] [2023-01-28 08:16:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516139816] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015237566] [2023-01-28 08:16:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:40,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:40,791 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 08:16:40,793 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 08:16:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:40,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:16:40,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:16:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:40,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:16:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015237566] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:16:40,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:16:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:16:40,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017145072] [2023-01-28 08:16:40,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:16:40,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:16:40,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:40,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:16:40,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:16:40,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 409 [2023-01-28 08:16:40,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 107 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 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 08:16:40,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:40,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 409 [2023-01-28 08:16:40,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:41,208 INFO L130 PetriNetUnfolder]: 1468/2514 cut-off events. [2023-01-28 08:16:41,209 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-01-28 08:16:41,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 2514 events. 1468/2514 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12754 event pairs, 1368 based on Foata normal form. 3/2129 useless extension candidates. Maximal degree in co-relation 4961. Up to 2380 conditions per place. [2023-01-28 08:16:41,218 INFO L137 encePairwiseOnDemand]: 406/409 looper letters, 36 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-01-28 08:16:41,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 201 flow [2023-01-28 08:16:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:16:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:16:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1226 transitions. [2023-01-28 08:16:41,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49959250203748984 [2023-01-28 08:16:41,221 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1226 transitions. [2023-01-28 08:16:41,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1226 transitions. [2023-01-28 08:16:41,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:41,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1226 transitions. [2023-01-28 08:16:41,223 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 08:16:41,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 409.0) internal successors, (2863), 7 states have internal predecessors, (2863), 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 08:16:41,227 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 409.0) internal successors, (2863), 7 states have internal predecessors, (2863), 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 08:16:41,227 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 107 flow. Second operand 6 states and 1226 transitions. [2023-01-28 08:16:41,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 201 flow [2023-01-28 08:16:41,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 08:16:41,229 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 139 flow [2023-01-28 08:16:41,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-01-28 08:16:41,230 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-01-28 08:16:41,230 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 139 flow [2023-01-28 08:16:41,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 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 08:16:41,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:41,231 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:16:41,243 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 08:16:41,436 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 08:16:41,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 08:16:41,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2103321559, now seen corresponding path program 2 times [2023-01-28 08:16:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094681819] [2023-01-28 08:16:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:16:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094681819] [2023-01-28 08:16:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094681819] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:41,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857274962] [2023-01-28 08:16:41,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:16:41,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:41,556 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 08:16:41,559 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 08:16:41,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:16:41,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:16:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 08:16:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:16:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:41,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:16:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:16:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857274962] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:16:41,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:16:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-01-28 08:16:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104161308] [2023-01-28 08:16:41,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:16:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 08:16:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 08:16:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-01-28 08:16:41,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 409 [2023-01-28 08:16:41,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 139 flow. Second operand has 14 states, 14 states have (on average 193.35714285714286) internal successors, (2707), 14 states have internal predecessors, (2707), 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 08:16:41,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:41,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 409 [2023-01-28 08:16:41,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:41,907 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2023-01-28 08:16:41,907 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-28 08:16:41,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 58 events. 17/58 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 1 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 155. Up to 34 conditions per place. [2023-01-28 08:16:41,907 INFO L137 encePairwiseOnDemand]: 404/409 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-01-28 08:16:41,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 198 flow [2023-01-28 08:16:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:16:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:16:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2714 transitions. [2023-01-28 08:16:41,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47397834439399233 [2023-01-28 08:16:41,913 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2714 transitions. [2023-01-28 08:16:41,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2714 transitions. [2023-01-28 08:16:41,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:41,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2714 transitions. [2023-01-28 08:16:41,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 193.85714285714286) internal successors, (2714), 14 states have internal predecessors, (2714), 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 08:16:41,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 409.0) internal successors, (6135), 15 states have internal predecessors, (6135), 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 08:16:41,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 409.0) internal successors, (6135), 15 states have internal predecessors, (6135), 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 08:16:41,934 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 139 flow. Second operand 14 states and 2714 transitions. [2023-01-28 08:16:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 198 flow [2023-01-28 08:16:41,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 182 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 08:16:41,948 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-01-28 08:16:41,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-01-28 08:16:41,949 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2023-01-28 08:16:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-01-28 08:16:41,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.35714285714286) internal successors, (2707), 14 states have internal predecessors, (2707), 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 08:16:41,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 08:16:41,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-01-28 08:16:41,971 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 08:16:42,158 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 08:16:42,159 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-28 08:16:42,160 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-01-28 08:16:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 08:16:42,222 INFO L130 PetriNetUnfolder]: 54/427 cut-off events. [2023-01-28 08:16:42,223 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-01-28 08:16:42,224 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 08:16:42,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 480 flow [2023-01-28 08:16:42,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 227 transitions, 470 flow [2023-01-28 08:16:42,226 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:16:42,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 227 transitions, 470 flow [2023-01-28 08:16:42,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 227 transitions, 470 flow [2023-01-28 08:16:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 227 transitions, 470 flow [2023-01-28 08:16:42,274 INFO L130 PetriNetUnfolder]: 50/415 cut-off events. [2023-01-28 08:16:42,275 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-01-28 08:16:42,276 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 08:16:42,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 15336 [2023-01-28 08:16:46,315 INFO L134 LiptonReduction]: Checked pairs total: 23781 [2023-01-28 08:16:46,315 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-28 08:16:46,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 08:16:46,317 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;@1a660ee1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:16:46,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 08:16:46,322 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-01-28 08:16:46,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:16:46,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:46,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-28 08:16:46,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:16:46,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -956369368, now seen corresponding path program 1 times [2023-01-28 08:16:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959356114] [2023-01-28 08:16:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:46,348 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 08:16:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959356114] [2023-01-28 08:16:46,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959356114] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:16:46,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:16:46,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:16:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121546869] [2023-01-28 08:16:46,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:16:46,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:16:46,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:46,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:16:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:16:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:16:46,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 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 08:16:46,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:46,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:16:46,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:46,709 INFO L130 PetriNetUnfolder]: 3149/5354 cut-off events. [2023-01-28 08:16:46,709 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-01-28 08:16:46,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10347 conditions, 5354 events. 3149/5354 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30582 event pairs, 2924 based on Foata normal form. 276/4722 useless extension candidates. Maximal degree in co-relation 9343. Up to 4918 conditions per place. [2023-01-28 08:16:46,720 INFO L137 encePairwiseOnDemand]: 399/413 looper letters, 37 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-01-28 08:16:46,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 222 flow [2023-01-28 08:16:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:16:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:16:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-01-28 08:16:46,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2023-01-28 08:16:46,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-01-28 08:16:46,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-01-28 08:16:46,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:46,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-01-28 08:16:46,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 08:16:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 08:16:46,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 08:16:46,725 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 651 transitions. [2023-01-28 08:16:46,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 222 flow [2023-01-28 08:16:46,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:16:46,728 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-01-28 08:16:46,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-01-28 08:16:46,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-01-28 08:16:46,732 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-01-28 08:16:46,732 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 08:16:46,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:46,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-01-28 08:16:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 08:16:46,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:16:46,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1793730092, now seen corresponding path program 1 times [2023-01-28 08:16:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049600500] [2023-01-28 08:16:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:46,767 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 08:16:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049600500] [2023-01-28 08:16:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049600500] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572494084] [2023-01-28 08:16:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:46,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:46,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:46,781 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 08:16:46,801 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 08:16:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:16:46,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:16:46,977 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 08:16:46,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:16:46,986 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 08:16:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572494084] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:16:46,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:16:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:16:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901832284] [2023-01-28 08:16:46,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:16:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:16:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:16:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:16:46,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:16:46,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 112 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 08:16:46,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:46,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:16:46,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:47,193 INFO L130 PetriNetUnfolder]: 1269/2252 cut-off events. [2023-01-28 08:16:47,193 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 08:16:47,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 2252 events. 1269/2252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11201 event pairs, 1188 based on Foata normal form. 0/1913 useless extension candidates. Maximal degree in co-relation 4337. Up to 2050 conditions per place. [2023-01-28 08:16:47,200 INFO L137 encePairwiseOnDemand]: 410/413 looper letters, 37 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-01-28 08:16:47,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 208 flow [2023-01-28 08:16:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:16:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:16:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2023-01-28 08:16:47,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49515738498789347 [2023-01-28 08:16:47,203 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2023-01-28 08:16:47,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2023-01-28 08:16:47,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:47,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2023-01-28 08:16:47,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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 08:16:47,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 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 08:16:47,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 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 08:16:47,208 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1227 transitions. [2023-01-28 08:16:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 208 flow [2023-01-28 08:16:47,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 08:16:47,209 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-01-28 08:16:47,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-01-28 08:16:47,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-01-28 08:16:47,211 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-01-28 08:16:47,211 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 08:16:47,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:47,211 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-01-28 08:16:47,229 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 08:16:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:47,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:16:47,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 5035816, now seen corresponding path program 2 times [2023-01-28 08:16:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:47,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481119881] [2023-01-28 08:16:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:47,552 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 08:16:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481119881] [2023-01-28 08:16:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481119881] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281477170] [2023-01-28 08:16:47,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:16:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:47,554 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 08:16:47,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 08:16:47,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:16:47,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:16:47,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 08:16:47,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:16:47,709 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 08:16:47,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:16:47,746 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 08:16:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281477170] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:16:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:16:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 08:16:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881567165] [2023-01-28 08:16:47,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:16:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:16:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:16:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:16:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:16:47,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:16:47,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 144 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 08:16:47,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:16:47,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:16:47,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:16:48,034 INFO L130 PetriNetUnfolder]: 1269/2258 cut-off events. [2023-01-28 08:16:48,034 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-28 08:16:48,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4387 conditions, 2258 events. 1269/2258 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11203 event pairs, 1188 based on Foata normal form. 6/1926 useless extension candidates. Maximal degree in co-relation 4328. Up to 2050 conditions per place. [2023-01-28 08:16:48,046 INFO L137 encePairwiseOnDemand]: 410/413 looper letters, 37 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-01-28 08:16:48,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 276 flow [2023-01-28 08:16:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:16:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:16:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2418 transitions. [2023-01-28 08:16:48,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48789346246973364 [2023-01-28 08:16:48,052 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2418 transitions. [2023-01-28 08:16:48,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2418 transitions. [2023-01-28 08:16:48,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:16:48,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2418 transitions. [2023-01-28 08:16:48,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.5) internal successors, (2418), 12 states have internal predecessors, (2418), 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 08:16:48,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 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 08:16:48,063 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 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 08:16:48,063 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2418 transitions. [2023-01-28 08:16:48,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 276 flow [2023-01-28 08:16:48,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 08:16:48,065 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-01-28 08:16:48,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-01-28 08:16:48,067 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-01-28 08:16:48,067 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-01-28 08:16:48,068 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 08:16:48,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:16:48,068 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-01-28 08:16:48,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 08:16:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:48,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:16:48,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:16:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 123713704, now seen corresponding path program 3 times [2023-01-28 08:16:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:16:48,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034193329] [2023-01-28 08:16:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:16:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:16:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:16:48,581 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 08:16:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:16:48,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034193329] [2023-01-28 08:16:48,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034193329] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:16:48,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292537171] [2023-01-28 08:16:48,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:16:48,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:16:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:48,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:16:48,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 08:20:35,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-28 08:20:35,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:20:35,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 08:20:35,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:20:35,348 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 08:20:35,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:20:35,494 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 08:20:35,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292537171] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:20:35,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:20:35,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-01-28 08:20:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546296462] [2023-01-28 08:20:35,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:20:35,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 08:20:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:20:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 08:20:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-01-28 08:20:35,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:20:35,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 214 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 08:20:35,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:20:35,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:20:35,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:20:35,798 INFO L130 PetriNetUnfolder]: 1269/2270 cut-off events. [2023-01-28 08:20:35,799 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-01-28 08:20:35,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 2270 events. 1269/2270 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11200 event pairs, 1188 based on Foata normal form. 12/1944 useless extension candidates. Maximal degree in co-relation 4334. Up to 2050 conditions per place. [2023-01-28 08:20:35,807 INFO L137 encePairwiseOnDemand]: 410/413 looper letters, 37 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-01-28 08:20:35,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 430 flow [2023-01-28 08:20:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 08:20:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 08:20:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4800 transitions. [2023-01-28 08:20:35,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48426150121065376 [2023-01-28 08:20:35,815 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4800 transitions. [2023-01-28 08:20:35,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4800 transitions. [2023-01-28 08:20:35,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:20:35,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4800 transitions. [2023-01-28 08:20:35,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 200.0) internal successors, (4800), 24 states have internal predecessors, (4800), 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 08:20:35,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 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 08:20:35,842 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 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 08:20:35,842 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4800 transitions. [2023-01-28 08:20:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 430 flow [2023-01-28 08:20:35,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 358 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-01-28 08:20:35,846 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-01-28 08:20:35,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2023-01-28 08:20:35,847 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-01-28 08:20:35,847 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-01-28 08:20:35,848 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 08:20:35,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:20:35,848 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-01-28 08:20:35,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 08:20:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:20:36,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:20:36,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:20:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 745544616, now seen corresponding path program 4 times [2023-01-28 08:20:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:20:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60762510] [2023-01-28 08:20:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:20:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:20:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:20:36,879 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 08:20:36,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:20:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60762510] [2023-01-28 08:20:36,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60762510] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:20:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385693728] [2023-01-28 08:20:36,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:20:36,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:20:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:20:36,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:20:36,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 08:20:37,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:20:37,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:20:37,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 08:20:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:20:37,254 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 08:20:37,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:20:37,743 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 08:20:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385693728] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:20:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:20:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-01-28 08:20:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79182221] [2023-01-28 08:20:37,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:20:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 08:20:37,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:20:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 08:20:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 08:20:37,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:20:37,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 334 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 08:20:37,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:20:37,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:20:37,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:20:38,126 INFO L130 PetriNetUnfolder]: 1269/2294 cut-off events. [2023-01-28 08:20:38,126 INFO L131 PetriNetUnfolder]: For 5241/5241 co-relation queries the response was YES. [2023-01-28 08:20:38,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 2294 events. 1269/2294 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11198 event pairs, 1188 based on Foata normal form. 24/1980 useless extension candidates. Maximal degree in co-relation 4346. Up to 2050 conditions per place. [2023-01-28 08:20:38,139 INFO L137 encePairwiseOnDemand]: 410/413 looper letters, 37 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-01-28 08:20:38,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 694 flow [2023-01-28 08:20:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-28 08:20:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-28 08:20:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9564 transitions. [2023-01-28 08:20:38,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824455205811138 [2023-01-28 08:20:38,152 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9564 transitions. [2023-01-28 08:20:38,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9564 transitions. [2023-01-28 08:20:38,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:20:38,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9564 transitions. [2023-01-28 08:20:38,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 199.25) internal successors, (9564), 48 states have internal predecessors, (9564), 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 08:20:38,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 413.0) internal successors, (20237), 49 states have internal predecessors, (20237), 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 08:20:38,187 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 413.0) internal successors, (20237), 49 states have internal predecessors, (20237), 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 08:20:38,187 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9564 transitions. [2023-01-28 08:20:38,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 694 flow [2023-01-28 08:20:38,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 550 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-01-28 08:20:38,192 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-01-28 08:20:38,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=574, PETRI_PLACES=163, PETRI_TRANSITIONS=91} [2023-01-28 08:20:38,193 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-01-28 08:20:38,193 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-01-28 08:20:38,195 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 08:20:38,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:20:38,195 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-01-28 08:20:38,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 08:20:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:20:38,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:20:38,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:20:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2015665752, now seen corresponding path program 5 times [2023-01-28 08:20:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:20:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967054821] [2023-01-28 08:20:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:20:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:20:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:20:40,879 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 08:20:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:20:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967054821] [2023-01-28 08:20:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967054821] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:20:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964815061] [2023-01-28 08:20:40,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:20:40,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:20:40,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:20:40,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:20:40,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 08:31:13,188 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 08:31:13,217 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:31:14,199 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 08:31:14,417 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-01-28 08:31:14,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:31:14,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:31:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-01-28 08:31:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149873293] [2023-01-28 08:31:14,451 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-28 08:31:14,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-28 08:31:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:31:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-28 08:31:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-01-28 08:31:14,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-01-28 08:31:14,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 413 [2023-01-28 08:31:14,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 91 transitions, 574 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 08:31:14,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:31:14,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 413 [2023-01-28 08:31:14,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:31:14,520 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 08:31:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 08:31:14,521 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 08:31:14,521 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 08:31:14,521 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-01-28 08:31:14,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2023-01-28 08:31:14,522 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 08:31:14,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 08:31:14,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:31:14 BasicIcfg [2023-01-28 08:31:14,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 08:31:14,525 INFO L158 Benchmark]: Toolchain (without parser) took 881172.40ms. Allocated memory was 698.4MB in the beginning and 1.0GB in the end (delta: 337.6MB). Free memory was 657.4MB in the beginning and 978.9MB in the end (delta: -321.5MB). Peak memory consumption was 609.3MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 419.4MB. Free memory is still 369.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.57ms. Allocated memory is still 698.4MB. Free memory was 657.4MB in the beginning and 621.0MB in the end (delta: 36.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.86ms. Allocated memory is still 698.4MB. Free memory was 621.0MB in the beginning and 617.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: Boogie Preprocessor took 35.24ms. Allocated memory is still 698.4MB. Free memory was 617.9MB in the beginning and 615.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: RCFGBuilder took 535.14ms. Allocated memory is still 698.4MB. Free memory was 615.5MB in the beginning and 656.4MB in the end (delta: -40.9MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,526 INFO L158 Benchmark]: TraceAbstraction took 879973.73ms. Allocated memory was 698.4MB in the beginning and 1.0GB in the end (delta: 337.6MB). Free memory was 656.4MB in the beginning and 978.9MB in the end (delta: -322.6MB). Peak memory consumption was 606.6MB. Max. memory is 16.0GB. [2023-01-28 08:31:14,528 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 419.4MB. Free memory is still 369.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 560.57ms. Allocated memory is still 698.4MB. Free memory was 657.4MB in the beginning and 621.0MB in the end (delta: 36.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.86ms. Allocated memory is still 698.4MB. Free memory was 621.0MB in the beginning and 617.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.24ms. Allocated memory is still 698.4MB. Free memory was 617.9MB in the beginning and 615.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 535.14ms. Allocated memory is still 698.4MB. Free memory was 615.5MB in the beginning and 656.4MB in the end (delta: -40.9MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. * TraceAbstraction took 879973.73ms. Allocated memory was 698.4MB in the beginning and 1.0GB in the end (delta: 337.6MB). Free memory was 656.4MB in the beginning and 978.9MB in the end (delta: -322.6MB). Peak memory consumption was 606.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 208 PlacesBefore, 54 PlacesAfterwards, 226 TransitionsBefore, 65 TransitionsAfterwards, 15278 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 109 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 18 ConcurrentYvCompositions, 7 ChoiceCompositions, 180 TotalNumberOfCompositions, 23287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13581, independent: 13262, independent conditional: 0, independent unconditional: 13262, dependent: 319, dependent conditional: 0, dependent unconditional: 319, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7777, independent: 7689, independent conditional: 0, independent unconditional: 7689, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13581, independent: 5573, independent conditional: 0, independent unconditional: 5573, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 7777, unknown conditional: 0, unknown unconditional: 7777] , Statistics on independence cache: Total cache size (in pairs): 443, Positive cache size: 408, Positive conditional cache size: 0, Positive unconditional cache size: 408, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 209 PlacesBefore, 54 PlacesAfterwards, 227 TransitionsBefore, 65 TransitionsAfterwards, 15336 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 111 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 23781 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13301, independent: 12975, independent conditional: 0, independent unconditional: 12975, dependent: 326, dependent conditional: 0, dependent unconditional: 326, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7833, independent: 7739, independent conditional: 0, independent unconditional: 7739, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13301, independent: 5236, independent conditional: 0, independent unconditional: 5236, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 7833, unknown conditional: 0, unknown unconditional: 7833] , Statistics on independence cache: Total cache size (in pairs): 439, Positive cache size: 395, Positive conditional cache size: 0, Positive unconditional cache size: 395, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, 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 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: 7.5s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=0, InterpolantAutomatonStates: 26, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/41 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 - 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: 872.4s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, 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, 652 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 652 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=574occurred 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: 0.1s SsaConstructionTime, 226.9s SatisfiabilityAnalysisTime, 4.2s 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