./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d16741ac57914c34248ac4b60573c9c4b90df3cc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:29:25,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:29:25,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:29:25,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:29:25,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:29:25,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:29:25,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:29:25,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:29:25,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:29:25,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:29:25,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:29:25,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:29:25,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:29:25,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:29:25,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:29:25,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:29:25,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:29:25,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:29:25,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:29:25,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:29:25,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:29:25,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:29:25,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:29:25,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:29:25,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:29:25,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:29:25,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:29:25,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:29:25,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:29:25,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:29:25,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:29:25,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:29:25,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:29:25,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:29:25,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:29:25,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:29:25,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:29:25,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:29:25,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:29:25,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:29:25,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:29:25,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:29:25,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:29:25,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:29:25,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:29:25,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:29:25,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:29:25,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:29:25,970 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:29:25,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:29:25,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:29:25,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:29:25,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:29:25,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:29:25,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:29:25,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:29:25,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:29:25,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:29:25,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:29:25,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:29:25,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:29:25,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:29:25,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:29:25,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:29:25,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:29:25,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:29:25,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:29:25,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:29:25,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:29:25,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:29:25,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:29:25,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:29:25,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d16741ac57914c34248ac4b60573c9c4b90df3cc [2021-08-29 22:29:26,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:29:26,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:29:26,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:29:26,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:29:26,344 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:29:26,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2021-08-29 22:29:26,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6e3b8c6/9285b09e7d8943cd92c5ef2b258b9040/FLAGb13832803 [2021-08-29 22:29:26,985 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:29:26,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2021-08-29 22:29:27,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6e3b8c6/9285b09e7d8943cd92c5ef2b258b9040/FLAGb13832803 [2021-08-29 22:29:27,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6e3b8c6/9285b09e7d8943cd92c5ef2b258b9040 [2021-08-29 22:29:27,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:29:27,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:29:27,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:29:27,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:29:27,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:29:27,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515cce44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27, skipping insertion in model container [2021-08-29 22:29:27,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:29:27,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:29:27,464 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:29:27,679 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-08-29 22:29:27,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:29:27,709 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:29:27,727 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:29:27,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-08-29 22:29:27,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:29:27,813 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:29:27,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27 WrapperNode [2021-08-29 22:29:27,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:29:27,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:29:27,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:29:27,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:29:27,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:29:27,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:29:27,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:29:27,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:29:27,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:29:27,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:29:27,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:29:27,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:29:27,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (1/1) ... [2021-08-29 22:29:27,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:29:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:29:27,914 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) [2021-08-29 22:29:27,923 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 [2021-08-29 22:29:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-29 22:29:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-29 22:29:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:29:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:29:27,960 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:29:28,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:29:28,173 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 22:29:28,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:29:28 BoogieIcfgContainer [2021-08-29 22:29:28,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:29:28,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:29:28,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:29:28,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:29:28,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:29:27" (1/3) ... [2021-08-29 22:29:28,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4446e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:29:28, skipping insertion in model container [2021-08-29 22:29:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:29:27" (2/3) ... [2021-08-29 22:29:28,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4446e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:29:28, skipping insertion in model container [2021-08-29 22:29:28,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:29:28" (3/3) ... [2021-08-29 22:29:28,183 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-08-29 22:29:28,188 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:29:28,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:29:28,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:29:28,189 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:29:28,218 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,219 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,219 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,219 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,220 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,220 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,220 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,220 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,221 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,221 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,221 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,222 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,223 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,224 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,224 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,224 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,225 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,225 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,225 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,225 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,229 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,229 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,230 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,230 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,230 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,230 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:29:28,234 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-29 22:29:28,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:29:28,280 INFO L339 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=true, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 22:29:28,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 22:29:28,293 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:29:28,306 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 72 transitions, 152 flow [2021-08-29 22:29:28,309 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 72 transitions, 152 flow [2021-08-29 22:29:28,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 152 flow [2021-08-29 22:29:28,372 INFO L129 PetriNetUnfolder]: 5/71 cut-off events. [2021-08-29 22:29:28,377 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-29 22:29:28,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 71 events. 5/71 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-08-29 22:29:28,386 INFO L116 LiptonReduction]: Number of co-enabled transitions 384 [2021-08-29 22:29:32,459 INFO L131 LiptonReduction]: Checked pairs total: 417 [2021-08-29 22:29:32,460 INFO L133 LiptonReduction]: Total number of compositions: 66 [2021-08-29 22:29:32,474 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 12 transitions, 32 flow [2021-08-29 22:29:32,494 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-08-29 22:29:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-08-29 22:29:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-29 22:29:32,506 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:29:32,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-29 22:29:32,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 22:29:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:29:32,517 INFO L82 PathProgramCache]: Analyzing trace with hash 8554400, now seen corresponding path program 1 times [2021-08-29 22:29:32,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:29:32,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772198800] [2021-08-29 22:29:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:32,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:29:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:32,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:29:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772198800] [2021-08-29 22:29:32,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772198800] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:29:32,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:29:32,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:29:32,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958621840] [2021-08-29 22:29:32,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:29:32,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:29:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:29:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:29:32,786 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-08-29 22:29:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:29:32,809 INFO L93 Difference]: Finished difference Result 9 states and 15 transitions. [2021-08-29 22:29:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:29:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2021-08-29 22:29:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:29:32,819 INFO L225 Difference]: With dead ends: 9 [2021-08-29 22:29:32,819 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 22:29:32,820 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:29:32,825 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.76ms IncrementalHoareTripleChecker+Time [2021-08-29 22:29:32,827 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 9.76ms Time] [2021-08-29 22:29:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 22:29:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 22:29:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-08-29 22:29:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2021-08-29 22:29:32,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2021-08-29 22:29:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:29:32,856 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2021-08-29 22:29:32,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-08-29 22:29:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2021-08-29 22:29:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 22:29:32,857 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:29:32,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 22:29:32,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:29:32,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 22:29:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:29:32,861 INFO L82 PathProgramCache]: Analyzing trace with hash -369180453, now seen corresponding path program 1 times [2021-08-29 22:29:32,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:29:32,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035586130] [2021-08-29 22:29:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:32,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:29:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:32,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:29:32,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035586130] [2021-08-29 22:29:32,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035586130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:29:32,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:29:32,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:29:32,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098502739] [2021-08-29 22:29:32,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:29:32,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:29:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:29:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:29:32,920 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-29 22:29:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:29:32,929 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2021-08-29 22:29:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:29:32,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-08-29 22:29:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:29:32,930 INFO L225 Difference]: With dead ends: 11 [2021-08-29 22:29:32,930 INFO L226 Difference]: Without dead ends: 11 [2021-08-29 22:29:32,931 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:29:32,932 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.02ms IncrementalHoareTripleChecker+Time [2021-08-29 22:29:32,932 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 7.02ms Time] [2021-08-29 22:29:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-29 22:29:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-29 22:29:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-08-29 22:29:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2021-08-29 22:29:32,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2021-08-29 22:29:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:29:32,936 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2021-08-29 22:29:32,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-29 22:29:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2021-08-29 22:29:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 22:29:32,937 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:29:32,937 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:29:32,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:29:32,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 22:29:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:29:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1440689715, now seen corresponding path program 1 times [2021-08-29 22:29:32,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:29:32,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875324974] [2021-08-29 22:29:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:32,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:29:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:32,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:29:32,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875324974] [2021-08-29 22:29:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875324974] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:29:32,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278213043] [2021-08-29 22:29:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:32,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:29:32,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:29:32,994 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) [2021-08-29 22:29:33,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 22:29:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:33,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 22:29:33,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:29:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:33,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:29:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278213043] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:29:33,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:29:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-29 22:29:33,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399312529] [2021-08-29 22:29:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 22:29:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:29:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 22:29:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:29:33,133 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-08-29 22:29:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:29:33,191 INFO L93 Difference]: Finished difference Result 17 states and 31 transitions. [2021-08-29 22:29:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:29:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) Word has length 7 [2021-08-29 22:29:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:29:33,192 INFO L225 Difference]: With dead ends: 17 [2021-08-29 22:29:33,192 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 22:29:33,192 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.87ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:29:33,193 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.91ms IncrementalHoareTripleChecker+Time [2021-08-29 22:29:33,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 50.91ms Time] [2021-08-29 22:29:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 22:29:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 22:29:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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) [2021-08-29 22:29:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 31 transitions. [2021-08-29 22:29:33,197 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 31 transitions. Word has length 7 [2021-08-29 22:29:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:29:33,197 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 31 transitions. [2021-08-29 22:29:33,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-08-29 22:29:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 31 transitions. [2021-08-29 22:29:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:29:33,198 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:29:33,198 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-08-29 22:29:33,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 22:29:33,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:29:33,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 22:29:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:29:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash 358307547, now seen corresponding path program 2 times [2021-08-29 22:29:33,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:29:33,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102190078] [2021-08-29 22:29:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:33,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:29:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:33,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:29:33,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102190078] [2021-08-29 22:29:33,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102190078] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:29:33,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324811727] [2021-08-29 22:29:33,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 22:29:33,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:29:33,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:29:33,490 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) [2021-08-29 22:29:33,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 22:29:33,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 22:29:33,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:29:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 22:29:33,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:29:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:33,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:29:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:33,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324811727] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:29:33,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:29:33,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-08-29 22:29:33,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222895692] [2021-08-29 22:29:33,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 22:29:33,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:29:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 22:29:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 22:29:33,666 INFO L87 Difference]: Start difference. First operand 17 states and 31 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-08-29 22:29:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:29:33,715 INFO L93 Difference]: Finished difference Result 29 states and 55 transitions. [2021-08-29 22:29:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 22:29:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) Word has length 10 [2021-08-29 22:29:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:29:33,717 INFO L225 Difference]: With dead ends: 29 [2021-08-29 22:29:33,717 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 22:29:33,718 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 63.27ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 22:29:33,719 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.96ms IncrementalHoareTripleChecker+Time [2021-08-29 22:29:33,720 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 35 Invalid, 28 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 39.96ms Time] [2021-08-29 22:29:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 22:29:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 22:29:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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) [2021-08-29 22:29:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2021-08-29 22:29:33,725 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2021-08-29 22:29:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:29:33,726 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2021-08-29 22:29:33,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-08-29 22:29:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2021-08-29 22:29:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 22:29:33,727 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:29:33,727 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2021-08-29 22:29:33,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 22:29:33,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-29 22:29:33,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 22:29:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:29:33,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1236244443, now seen corresponding path program 3 times [2021-08-29 22:29:33,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:29:33,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551222385] [2021-08-29 22:29:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:29:33,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:29:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:29:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:29:34,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:29:34,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551222385] [2021-08-29 22:29:34,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551222385] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:29:34,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272327135] [2021-08-29 22:29:34,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 22:29:34,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:29:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:29:34,137 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) [2021-08-29 22:29:34,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 22:29:34,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-29 22:29:34,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:29:34,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 22:29:34,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:29:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-29 22:29:34,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 22:29:34,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272327135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:29:34,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 22:29:34,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2021-08-29 22:29:34,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559382069] [2021-08-29 22:29:34,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:29:34,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:29:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:29:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-08-29 22:29:34,286 INFO L87 Difference]: Start difference. First operand 29 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-29 22:29:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:29:34,317 INFO L93 Difference]: Finished difference Result 28 states and 54 transitions. [2021-08-29 22:29:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:29:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 16 [2021-08-29 22:29:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:29:34,318 INFO L225 Difference]: With dead ends: 28 [2021-08-29 22:29:34,318 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:29:34,319 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 90.18ms TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-08-29 22:29:34,327 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.60ms IncrementalHoareTripleChecker+Time [2021-08-29 22:29:34,328 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 11.60ms Time] [2021-08-29 22:29:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:29:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:29:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-29 22:29:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:29:34,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-29 22:29:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:29:34,332 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:29:34,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-29 22:29:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:29:34,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:29:34,338 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-08-29 22:29:34,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-08-29 22:29:34,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-08-29 22:29:34,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 22:29:34,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:29:34,558 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:29:34,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:29:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:29:34 BasicIcfg [2021-08-29 22:29:34,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:29:34,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:29:34,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:29:34,562 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:29:34,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:29:28" (3/4) ... [2021-08-29 22:29:34,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:29:34,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2021-08-29 22:29:34,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:29:34,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-29 22:29:34,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-29 22:29:34,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:29:34,601 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:29:34,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:29:34,602 INFO L158 Benchmark]: Toolchain (without parser) took 7290.64ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 38.3MB in the beginning and 47.3MB in the end (delta: -9.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,602 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:29:34,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.81ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 35.3MB in the end (delta: 2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.18ms. Allocated memory is still 60.8MB. Free memory was 35.2MB in the beginning and 33.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,603 INFO L158 Benchmark]: Boogie Preprocessor took 24.95ms. Allocated memory is still 60.8MB. Free memory was 33.2MB in the beginning and 32.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,603 INFO L158 Benchmark]: RCFGBuilder took 293.44ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 31.8MB in the beginning and 55.7MB in the end (delta: -23.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,603 INFO L158 Benchmark]: TraceAbstraction took 6384.98ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 55.1MB in the beginning and 49.4MB in the end (delta: 5.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,604 INFO L158 Benchmark]: Witness Printer took 38.99ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:29:34,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.81ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 35.3MB in the end (delta: 2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.18ms. Allocated memory is still 60.8MB. Free memory was 35.2MB in the beginning and 33.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.95ms. Allocated memory is still 60.8MB. Free memory was 33.2MB in the beginning and 32.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.44ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 31.8MB in the beginning and 55.7MB in the end (delta: -23.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6384.98ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 55.1MB in the beginning and 49.4MB in the end (delta: 5.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Witness Printer took 38.99ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4150.95ms, 71 PlacesBefore, 14 PlacesAfterwards, 72 TransitionsBefore, 12 TransitionsAfterwards, 384 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 417 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 349, positive: 329, positive conditional: 0, positive unconditional: 329, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 264, positive: 254, positive conditional: 0, positive unconditional: 254, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 264, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 349, positive: 75, positive conditional: 0, positive unconditional: 75, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 264, unknown conditional: 0, unknown unconditional: 264] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 706]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6283.67ms, OverallIterations: 5, TraceHistogramMax: 10, EmptinessCheckTime: 12.90ms, AutomataDifference: 247.92ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 4214.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 119.25ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 86.13ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 39 mSDtfsCounter, 61 mSolverCounterSat, 2.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 178.28ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 25.97ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.63ms SsaConstructionTime, 190.90ms SatisfiabilityAnalysisTime, 590.39ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 1 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 55/143 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! [2021-08-29 22:29:34,645 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...