./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.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 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:17:14,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:17:14,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:17:14,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:17:14,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:17:14,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:17:14,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:17:14,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:17:14,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:17:14,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:17:14,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:17:14,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:17:14,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:17:14,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:17:14,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:17:14,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:17:14,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:17:14,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:17:14,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:17:14,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:17:14,908 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:17:14,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:17:14,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:17:14,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:17:14,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:17:14,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:17:14,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:17:14,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:17:14,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:17:14,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:17:14,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:17:14,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:17:14,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:17:14,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:17:14,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:17:14,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:17:14,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:17:14,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:17:14,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:17:14,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:17:14,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:17:14,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:17:14,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:17:14,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:17:14,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:17:14,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:17:14,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:17:14,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:17:14,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:17:14,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:17:14,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:17:14,946 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:17:14,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:17:14,947 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:17:14,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:17:14,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:17:14,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:17:14,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:17:14,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:17:14,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:17:14,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:14,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:17:14,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:17:14,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:17:14,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 [2022-07-19 21:17:15,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:17:15,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:17:15,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:17:15,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:17:15,183 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:17:15,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-07-19 21:17:15,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658c25c36/8f46bddb6a874a03b2553889061dd66c/FLAGa8b2a9eb4 [2022-07-19 21:17:15,609 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:17:15,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-07-19 21:17:15,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658c25c36/8f46bddb6a874a03b2553889061dd66c/FLAGa8b2a9eb4 [2022-07-19 21:17:15,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658c25c36/8f46bddb6a874a03b2553889061dd66c [2022-07-19 21:17:15,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:17:15,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:17:15,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:15,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:17:15,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:17:15,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:15,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a55cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15, skipping insertion in model container [2022-07-19 21:17:15,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:15,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:17:15,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:17:15,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-07-19 21:17:15,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:15,909 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:17:15,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-07-19 21:17:15,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:15,983 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:17:15,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15 WrapperNode [2022-07-19 21:17:15,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:15,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:15,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:17:15,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:17:15,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,031 INFO L137 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-19 21:17:16,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:16,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:17:16,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:17:16,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:17:16,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:17:16,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:17:16,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:17:16,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:17:16,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (1/1) ... [2022-07-19 21:17:16,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:17:16,100 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) [2022-07-19 21:17:16,102 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 [2022-07-19 21:17:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:17:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:17:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:17:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:17:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-19 21:17:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-19 21:17:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:17:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:17:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:17:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:17:16,137 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:17:16,229 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:17:16,231 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:17:16,334 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:17:16,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:17:16,339 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:17:16,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:16 BoogieIcfgContainer [2022-07-19 21:17:16,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:17:16,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:17:16,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:17:16,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:17:16,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:17:15" (1/3) ... [2022-07-19 21:17:16,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06209e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:16, skipping insertion in model container [2022-07-19 21:17:16,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:15" (2/3) ... [2022-07-19 21:17:16,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06209e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:16, skipping insertion in model container [2022-07-19 21:17:16,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:16" (3/3) ... [2022-07-19 21:17:16,346 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-07-19 21:17:16,349 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:17:16,355 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:17:16,356 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:17:16,356 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:17:16,388 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:17:16,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 66 transitions, 137 flow [2022-07-19 21:17:16,460 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2022-07-19 21:17:16,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:17:16,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 1/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-07-19 21:17:16,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 66 transitions, 137 flow [2022-07-19 21:17:16,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 55 transitions, 113 flow [2022-07-19 21:17:16,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:17:16,483 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=true, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44ed04b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@418aa941 [2022-07-19 21:17:16,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 21:17:16,521 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2022-07-19 21:17:16,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:17:16,522 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:16,522 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:16,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1593244809, now seen corresponding path program 1 times [2022-07-19 21:17:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:16,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401982322] [2022-07-19 21:17:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:16,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401982322] [2022-07-19 21:17:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401982322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:16,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:17:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486366590] [2022-07-19 21:17:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:17:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:17:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:17:16,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 66 [2022-07-19 21:17:16,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 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) [2022-07-19 21:17:16,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:16,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 66 [2022-07-19 21:17:16,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:16,913 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2022-07-19 21:17:16,914 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:17:16,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 71 events. 2/71 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2022-07-19 21:17:16,915 INFO L132 encePairwiseOnDemand]: 61/66 looper letters, 5 selfloop transitions, 2 changer transitions 7/62 dead transitions. [2022-07-19 21:17:16,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 155 flow [2022-07-19 21:17:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:17:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:17:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 408 transitions. [2022-07-19 21:17:16,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8831168831168831 [2022-07-19 21:17:16,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 408 transitions. [2022-07-19 21:17:16,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 408 transitions. [2022-07-19 21:17:16,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:16,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 408 transitions. [2022-07-19 21:17:16,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.285714285714285) internal successors, (408), 7 states have internal predecessors, (408), 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) [2022-07-19 21:17:16,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 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) [2022-07-19 21:17:16,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 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) [2022-07-19 21:17:16,937 INFO L186 Difference]: Start difference. First operand has 59 places, 55 transitions, 113 flow. Second operand 7 states and 408 transitions. [2022-07-19 21:17:16,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 155 flow [2022-07-19 21:17:16,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:17:16,942 INFO L242 Difference]: Finished difference. Result has 69 places, 55 transitions, 128 flow [2022-07-19 21:17:16,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2022-07-19 21:17:16,948 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2022-07-19 21:17:16,950 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 128 flow [2022-07-19 21:17:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 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) [2022-07-19 21:17:16,950 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:16,951 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:16,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:17:16,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 982120582, now seen corresponding path program 1 times [2022-07-19 21:17:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:16,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25421124] [2022-07-19 21:17:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:17,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:17,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25421124] [2022-07-19 21:17:17,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25421124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:17,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:17,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083256377] [2022-07-19 21:17:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:17,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:17,078 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 66 [2022-07-19 21:17:17,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2022-07-19 21:17:17,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:17,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 66 [2022-07-19 21:17:17,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:17,168 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2022-07-19 21:17:17,171 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:17:17,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 69 events. 1/69 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 1 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 104. Up to 11 conditions per place. [2022-07-19 21:17:17,176 INFO L132 encePairwiseOnDemand]: 60/66 looper letters, 14 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2022-07-19 21:17:17,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 168 flow [2022-07-19 21:17:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2022-07-19 21:17:17,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2022-07-19 21:17:17,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:17,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2022-07-19 21:17:17,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2022-07-19 21:17:17,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2022-07-19 21:17:17,191 INFO L186 Difference]: Start difference. First operand has 69 places, 55 transitions, 128 flow. Second operand 5 states and 242 transitions. [2022-07-19 21:17:17,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 168 flow [2022-07-19 21:17:17,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 156 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-19 21:17:17,195 INFO L242 Difference]: Finished difference. Result has 63 places, 55 transitions, 128 flow [2022-07-19 21:17:17,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2022-07-19 21:17:17,196 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2022-07-19 21:17:17,196 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 128 flow [2022-07-19 21:17:17,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2022-07-19 21:17:17,197 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:17,197 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:17,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:17:17,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -144193612, now seen corresponding path program 2 times [2022-07-19 21:17:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540942977] [2022-07-19 21:17:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:17,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540942977] [2022-07-19 21:17:17,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540942977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:17,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:17,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739240472] [2022-07-19 21:17:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:17,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:17,275 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 66 [2022-07-19 21:17:17,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2022-07-19 21:17:17,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:17,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 66 [2022-07-19 21:17:17,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:17,345 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2022-07-19 21:17:17,345 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-19 21:17:17,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 63 events. 0/63 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-07-19 21:17:17,346 INFO L132 encePairwiseOnDemand]: 61/66 looper letters, 15 selfloop transitions, 5 changer transitions 1/56 dead transitions. [2022-07-19 21:17:17,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 174 flow [2022-07-19 21:17:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2022-07-19 21:17:17,348 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2022-07-19 21:17:17,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:17,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 242 transitions. [2022-07-19 21:17:17,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2022-07-19 21:17:17,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2022-07-19 21:17:17,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2022-07-19 21:17:17,351 INFO L186 Difference]: Start difference. First operand has 63 places, 55 transitions, 128 flow. Second operand 5 states and 242 transitions. [2022-07-19 21:17:17,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 174 flow [2022-07-19 21:17:17,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:17:17,354 INFO L242 Difference]: Finished difference. Result has 64 places, 55 transitions, 131 flow [2022-07-19 21:17:17,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2022-07-19 21:17:17,356 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2022-07-19 21:17:17,356 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 131 flow [2022-07-19 21:17:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2022-07-19 21:17:17,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:17,357 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:17:17,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash -735767419, now seen corresponding path program 1 times [2022-07-19 21:17:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:17,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258860298] [2022-07-19 21:17:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:17:17,403 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:17:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:17:17,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:17:17,464 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:17:17,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 21:17:17,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-19 21:17:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:17:17,467 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-19 21:17:17,472 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:17:17,472 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:17:17,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:17:17 BasicIcfg [2022-07-19 21:17:17,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:17:17,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:17:17,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:17:17,508 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:17:17,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:16" (3/4) ... [2022-07-19 21:17:17,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 21:17:17,537 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:17:17,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:17:17,538 INFO L158 Benchmark]: Toolchain (without parser) took 1895.57ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 72.8MB in the beginning and 117.9MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:17,538 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:17,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.19ms. Allocated memory is still 115.3MB. Free memory was 72.6MB in the beginning and 79.6MB in the end (delta: -7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:17:17,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.60ms. Allocated memory is still 115.3MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:17,539 INFO L158 Benchmark]: Boogie Preprocessor took 26.97ms. Allocated memory is still 115.3MB. Free memory was 77.5MB in the beginning and 76.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:17,540 INFO L158 Benchmark]: RCFGBuilder took 280.51ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 65.0MB in the end (delta: 11.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 21:17:17,540 INFO L158 Benchmark]: TraceAbstraction took 1165.70ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 64.4MB in the beginning and 122.1MB in the end (delta: -57.7MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2022-07-19 21:17:17,541 INFO L158 Benchmark]: Witness Printer took 30.13ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 117.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:17:17,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.19ms. Allocated memory is still 115.3MB. Free memory was 72.6MB in the beginning and 79.6MB in the end (delta: -7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.60ms. Allocated memory is still 115.3MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.97ms. Allocated memory is still 115.3MB. Free memory was 77.5MB in the beginning and 76.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.51ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 65.0MB in the end (delta: 11.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1165.70ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 64.4MB in the beginning and 122.1MB in the end (delta: -57.7MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * Witness Printer took 30.13ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 117.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; VAL [g=0] [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, g=0] [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, D={4:0}, g=0] [L693] 0 pthread_t id; VAL [A={3:0}, D={4:0}, g=0, id={5:0}] [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, D={4:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, arg={0:0}, arg={0:0}, D={4:0}, g=17] [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) VAL [\old(cond)=0, A={3:0}, arg={0:0}, arg={0:0}, cond=0, D={4:0}, g=17] [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, arg={0:0}, cond=0, D={4:0}, g=17] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 11 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-19 21:17:17,578 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE