/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:45:10,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:45:10,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:45:10,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:45:10,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:45:10,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:45:10,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:45:10,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:45:10,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:45:10,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:45:10,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:45:10,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:45:10,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:45:10,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:45:10,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:45:10,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:45:10,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:45:10,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:45:10,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:45:10,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:45:10,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:45:10,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:45:10,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:45:10,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:45:10,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:45:10,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:45:10,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:45:10,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:45:10,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:45:10,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:45:10,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:45:10,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:45:10,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:45:10,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:45:10,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:45:10,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:45:10,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:45:10,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:45:10,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:45:10,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:45:10,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:45:10,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:45:10,950 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:45:10,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:45:10,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:45:10,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:45:10,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:45:10,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:45:10,951 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:45:10,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:45:10,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:45:10,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:45:10,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:10,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:45:10,954 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:45:11,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:45:11,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:45:11,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:45:11,186 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:45:11,186 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:45:11,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-01-28 02:45:12,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:45:12,441 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:45:12,441 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-01-28 02:45:12,449 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619c8bfe9/c827995a76a743c7a7f757ef35447329/FLAGa511e3141 [2023-01-28 02:45:12,462 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619c8bfe9/c827995a76a743c7a7f757ef35447329 [2023-01-28 02:45:12,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:45:12,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:45:12,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:12,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:45:12,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:45:12,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f92dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12, skipping insertion in model container [2023-01-28 02:45:12,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:45:12,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:45:12,600 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c[2817,2830] [2023-01-28 02:45:12,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:12,611 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:45:12,626 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c[2817,2830] [2023-01-28 02:45:12,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:12,637 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:45:12,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12 WrapperNode [2023-01-28 02:45:12,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:12,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:12,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:45:12,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:45:12,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,666 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 202 [2023-01-28 02:45:12,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:12,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:45:12,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:45:12,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:45:12,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:45:12,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:45:12,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:45:12,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:45:12,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (1/1) ... [2023-01-28 02:45:12,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:12,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:45:12,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:45:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:45:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:45:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:45:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:45:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:45:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:45:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:45:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:45:12,740 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:45:12,826 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:45:12,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:45:13,123 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:45:13,131 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:45:13,131 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 02:45:13,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:13 BoogieIcfgContainer [2023-01-28 02:45:13,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:45:13,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:45:13,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:45:13,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:45:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:45:12" (1/3) ... [2023-01-28 02:45:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abffcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:13, skipping insertion in model container [2023-01-28 02:45:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:12" (2/3) ... [2023-01-28 02:45:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abffcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:13, skipping insertion in model container [2023-01-28 02:45:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:13" (3/3) ... [2023-01-28 02:45:13,138 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2023-01-28 02:45:13,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:45:13,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:45:13,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:45:13,283 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:45:13,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 234 transitions, 492 flow [2023-01-28 02:45:13,410 INFO L130 PetriNetUnfolder]: 19/231 cut-off events. [2023-01-28 02:45:13,410 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:13,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 19/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-01-28 02:45:13,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 234 transitions, 492 flow [2023-01-28 02:45:13,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 221 transitions, 460 flow [2023-01-28 02:45:13,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:45:13,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 221 transitions, 460 flow [2023-01-28 02:45:13,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 221 transitions, 460 flow [2023-01-28 02:45:13,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 221 transitions, 460 flow [2023-01-28 02:45:13,498 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2023-01-28 02:45:13,498 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 221 events. 19/221 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 506 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-01-28 02:45:13,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-01-28 02:45:19,413 INFO L134 LiptonReduction]: Checked pairs total: 13800 [2023-01-28 02:45:19,413 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-01-28 02:45:19,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:45:19,430 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;@6d9b3427, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:45:19,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:45:19,435 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 02:45:19,435 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:19,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:19,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:19,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:19,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1506119749, now seen corresponding path program 1 times [2023-01-28 02:45:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327080048] [2023-01-28 02:45:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:20,952 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 02:45:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:20,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327080048] [2023-01-28 02:45:20,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327080048] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056257603] [2023-01-28 02:45:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:20,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:20,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:20,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:20,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:20,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:20,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:21,198 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-01-28 02:45:21,199 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-28 02:45:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 280 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-01-28 02:45:21,201 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-01-28 02:45:21,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-01-28 02:45:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1018 transitions. [2023-01-28 02:45:21,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346482577251808 [2023-01-28 02:45:21,229 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1018 transitions. [2023-01-28 02:45:21,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1018 transitions. [2023-01-28 02:45:21,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:21,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1018 transitions. [2023-01-28 02:45:21,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.66666666666666) internal successors, (1018), 6 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:21,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:21,253 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:21,254 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1018 transitions. [2023-01-28 02:45:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-01-28 02:45:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:45:21,262 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-01-28 02:45:21,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-01-28 02:45:21,268 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-01-28 02:45:21,269 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-01-28 02:45:21,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:21,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:21,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:21,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:45:21,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:21,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash 396375257, now seen corresponding path program 2 times [2023-01-28 02:45:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445248138] [2023-01-28 02:45:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:22,160 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 02:45:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445248138] [2023-01-28 02:45:22,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445248138] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:22,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:22,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346258574] [2023-01-28 02:45:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:22,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:22,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:22,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:22,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:22,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:22,366 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-01-28 02:45:22,367 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-01-28 02:45:22,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-01-28 02:45:22,368 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-01-28 02:45:22,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-01-28 02:45:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1018 transitions. [2023-01-28 02:45:22,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346482577251808 [2023-01-28 02:45:22,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1018 transitions. [2023-01-28 02:45:22,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1018 transitions. [2023-01-28 02:45:22,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:22,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1018 transitions. [2023-01-28 02:45:22,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.66666666666666) internal successors, (1018), 6 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:22,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:22,377 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:22,377 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1018 transitions. [2023-01-28 02:45:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-01-28 02:45:22,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:22,379 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-01-28 02:45:22,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-01-28 02:45:22,379 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-28 02:45:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-01-28 02:45:22,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:22,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:22,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:45:22,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:22,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1095757267, now seen corresponding path program 3 times [2023-01-28 02:45:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:22,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084525913] [2023-01-28 02:45:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:23,140 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 02:45:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084525913] [2023-01-28 02:45:23,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084525913] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:23,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:23,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125533189] [2023-01-28 02:45:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:23,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:23,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:23,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:23,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:23,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:23,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:23,549 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-01-28 02:45:23,549 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-01-28 02:45:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-01-28 02:45:23,552 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-01-28 02:45:23,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-01-28 02:45:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2023-01-28 02:45:23,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3339907955292571 [2023-01-28 02:45:23,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2023-01-28 02:45:23,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2023-01-28 02:45:23,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:23,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2023-01-28 02:45:23,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:23,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:23,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:23,562 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1016 transitions. [2023-01-28 02:45:23,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-01-28 02:45:23,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:23,566 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-01-28 02:45:23,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-01-28 02:45:23,567 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 02:45:23,569 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-01-28 02:45:23,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:23,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:23,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:45:23,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:23,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1664484545, now seen corresponding path program 4 times [2023-01-28 02:45:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208193992] [2023-01-28 02:45:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:24,171 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 02:45:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208193992] [2023-01-28 02:45:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208193992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729573564] [2023-01-28 02:45:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:24,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:24,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:24,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:24,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:24,390 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-01-28 02:45:24,391 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 02:45:24,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 2 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 25 conditions per place. [2023-01-28 02:45:24,391 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 18 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2023-01-28 02:45:24,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 202 flow [2023-01-28 02:45:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:45:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:45:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 841 transitions. [2023-01-28 02:45:24,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33175542406311637 [2023-01-28 02:45:24,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 841 transitions. [2023-01-28 02:45:24,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 841 transitions. [2023-01-28 02:45:24,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:24,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 841 transitions. [2023-01-28 02:45:24,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,403 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 5 states and 841 transitions. [2023-01-28 02:45:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 202 flow [2023-01-28 02:45:24,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 185 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-28 02:45:24,406 INFO L231 Difference]: Finished difference. Result has 36 places, 18 transitions, 82 flow [2023-01-28 02:45:24,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=18} [2023-01-28 02:45:24,407 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-01-28 02:45:24,408 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 18 transitions, 82 flow [2023-01-28 02:45:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:24,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:24,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:45:24,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:24,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash 595050437, now seen corresponding path program 5 times [2023-01-28 02:45:24,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:24,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623823559] [2023-01-28 02:45:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:24,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:24,957 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 02:45:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623823559] [2023-01-28 02:45:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623823559] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236460359] [2023-01-28 02:45:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:24,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:24,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:24,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:24,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:24,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:25,098 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-01-28 02:45:25,098 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-28 02:45:25,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 40 events. 8/40 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 83. Up to 19 conditions per place. [2023-01-28 02:45:25,099 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-01-28 02:45:25,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 179 flow [2023-01-28 02:45:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2023-01-28 02:45:25,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3297172912557528 [2023-01-28 02:45:25,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2023-01-28 02:45:25,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2023-01-28 02:45:25,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:25,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2023-01-28 02:45:25,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,107 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,107 INFO L175 Difference]: Start difference. First operand has 36 places, 18 transitions, 82 flow. Second operand 6 states and 1003 transitions. [2023-01-28 02:45:25,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 179 flow [2023-01-28 02:45:25,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 146 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-01-28 02:45:25,108 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 57 flow [2023-01-28 02:45:25,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=57, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-01-28 02:45:25,109 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-01-28 02:45:25,109 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 57 flow [2023-01-28 02:45:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:25,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:45:25,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:25,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -149652061, now seen corresponding path program 6 times [2023-01-28 02:45:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:25,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259644140] [2023-01-28 02:45:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:25,629 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 02:45:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259644140] [2023-01-28 02:45:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259644140] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:45:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205363137] [2023-01-28 02:45:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:45:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:45:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:45:25,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 507 [2023-01-28 02:45:25,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:25,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 507 [2023-01-28 02:45:25,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:25,786 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-01-28 02:45:25,786 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:45:25,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2023-01-28 02:45:25,786 INFO L137 encePairwiseOnDemand]: 502/507 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-01-28 02:45:25,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 95 flow [2023-01-28 02:45:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 991 transitions. [2023-01-28 02:45:25,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3257725180802104 [2023-01-28 02:45:25,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 991 transitions. [2023-01-28 02:45:25,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 991 transitions. [2023-01-28 02:45:25,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:25,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 991 transitions. [2023-01-28 02:45:25,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,794 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 57 flow. Second operand 6 states and 991 transitions. [2023-01-28 02:45:25,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 95 flow [2023-01-28 02:45:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-28 02:45:25,794 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-01-28 02:45:25,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-01-28 02:45:25,795 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-01-28 02:45:25,795 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-01-28 02:45:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:25,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 02:45:25,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 02:45:25,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 02:45:25,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 02:45:25,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:45:25,798 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-01-28 02:45:25,800 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:45:25,800 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:45:25,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:45:25 BasicIcfg [2023-01-28 02:45:25,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:45:25,803 INFO L158 Benchmark]: Toolchain (without parser) took 13336.22ms. Allocated memory was 503.3MB in the beginning and 734.0MB in the end (delta: 230.7MB). Free memory was 454.3MB in the beginning and 341.1MB in the end (delta: 113.2MB). Peak memory consumption was 345.4MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,803 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 356.5MB. Free memory is still 304.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:45:25,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.26ms. Allocated memory is still 503.3MB. Free memory was 454.0MB in the beginning and 442.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.95ms. Allocated memory is still 503.3MB. Free memory was 442.6MB in the beginning and 440.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,806 INFO L158 Benchmark]: Boogie Preprocessor took 19.66ms. Allocated memory is still 503.3MB. Free memory was 440.5MB in the beginning and 438.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,807 INFO L158 Benchmark]: RCFGBuilder took 445.27ms. Allocated memory is still 503.3MB. Free memory was 438.9MB in the beginning and 419.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,807 INFO L158 Benchmark]: TraceAbstraction took 12668.18ms. Allocated memory was 503.3MB in the beginning and 734.0MB in the end (delta: 230.7MB). Free memory was 418.3MB in the beginning and 341.1MB in the end (delta: 77.2MB). Peak memory consumption was 309.7MB. Max. memory is 16.0GB. [2023-01-28 02:45:25,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 356.5MB. Free memory is still 304.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 170.26ms. Allocated memory is still 503.3MB. Free memory was 454.0MB in the beginning and 442.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.95ms. Allocated memory is still 503.3MB. Free memory was 442.6MB in the beginning and 440.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.66ms. Allocated memory is still 503.3MB. Free memory was 440.5MB in the beginning and 438.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 445.27ms. Allocated memory is still 503.3MB. Free memory was 438.9MB in the beginning and 419.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 12668.18ms. Allocated memory was 503.3MB in the beginning and 734.0MB in the end (delta: 230.7MB). Free memory was 418.3MB in the beginning and 341.1MB in the end (delta: 77.2MB). Peak memory consumption was 309.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 212 PlacesBefore, 26 PlacesAfterwards, 221 TransitionsBefore, 16 TransitionsAfterwards, 14784 CoEnabledTransitionPairs, 8 FixpointIterations, 62 TrivialSequentialCompositions, 121 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 67 ConcurrentYvCompositions, 19 ChoiceCompositions, 273 TotalNumberOfCompositions, 13800 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13800, independent: 13800, independent conditional: 0, independent unconditional: 13800, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9222, independent: 9222, independent conditional: 0, independent unconditional: 9222, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13800, independent: 4578, independent conditional: 0, independent unconditional: 4578, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9222, unknown conditional: 0, unknown unconditional: 9222] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 336 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: 12.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 1923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 02:45:25,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...