./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/pthread/stateful01-1.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 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:02:20,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:02:20,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:02:20,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:02:20,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:02:20,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:02:20,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:02:20,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:02:20,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:02:20,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:02:20,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:02:20,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:02:20,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:02:20,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:02:20,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:02:20,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:02:20,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:02:20,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:02:20,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:02:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:02:20,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:02:20,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:02:20,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:02:20,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:02:20,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:02:20,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:02:20,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:02:20,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:02:20,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:02:20,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:02:20,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:02:20,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:02:20,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:02:20,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:02:20,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:02:20,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:02:20,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:02:20,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:02:20,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:02:20,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:02:20,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:02:20,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:02:20,211 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:02:20,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:02:20,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:02:20,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:02:20,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:02:20,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:02:20,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:02:20,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:02:20,215 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:02:20,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:02:20,216 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:02:20,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:02:20,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:02:20,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:02:20,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:02:20,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:02:20,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:02:20,218 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:02:20,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:02:20,218 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:02:20,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:02:20,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:02:20,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:02:20,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:02:20,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:02:20,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:02:20,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:02:20,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:02:20,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:02:20,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:02:20,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:02:20,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:02:20,221 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:02:20,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:02:20,221 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:02:20,221 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:02:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:02:20,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:02:20,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:02:20,573 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:02:20,573 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:02:20,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-09-01 09:02:21,893 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:02:22,145 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:02:22,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-09-01 09:02:22,168 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d190fcf9d/dd01e7db9f174960aeb73c69012e70d7/FLAGac2c68a4e [2023-09-01 09:02:22,180 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d190fcf9d/dd01e7db9f174960aeb73c69012e70d7 [2023-09-01 09:02:22,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:02:22,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:02:22,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:02:22,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:02:22,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:02:22,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f28a2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22, skipping insertion in model container [2023-09-01 09:02:22,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:02:22,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:02:22,495 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-09-01 09:02:22,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:02:22,514 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:02:22,565 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-09-01 09:02:22,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:02:22,611 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:02:22,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22 WrapperNode [2023-09-01 09:02:22,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:02:22,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:02:22,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:02:22,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:02:22,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,648 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-09-01 09:02:22,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:02:22,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:02:22,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:02:22,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:02:22,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:02:22,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:02:22,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:02:22,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:02:22,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (1/1) ... [2023-09-01 09:02:22,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:02:22,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:02:22,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:02:22,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:02:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:02:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 09:02:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 09:02:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 09:02:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 09:02:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:02:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 09:02:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:02:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:02:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:02:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:02:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:02:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:02:22,743 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:02:22,871 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:02:22,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:02:23,052 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:02:23,088 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:02:23,088 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:02:23,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:23 BoogieIcfgContainer [2023-09-01 09:02:23,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:02:23,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:02:23,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:02:23,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:02:23,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:02:22" (1/3) ... [2023-09-01 09:02:23,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4732ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:02:23, skipping insertion in model container [2023-09-01 09:02:23,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:22" (2/3) ... [2023-09-01 09:02:23,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4732ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:02:23, skipping insertion in model container [2023-09-01 09:02:23,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:23" (3/3) ... [2023-09-01 09:02:23,110 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-09-01 09:02:23,118 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:02:23,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:02:23,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:02:23,128 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:02:23,242 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 09:02:23,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2023-09-01 09:02:23,354 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2023-09-01 09:02:23,355 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:02:23,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-09-01 09:02:23,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2023-09-01 09:02:23,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2023-09-01 09:02:23,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:02:23,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 166 flow [2023-09-01 09:02:23,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 166 flow [2023-09-01 09:02:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 166 flow [2023-09-01 09:02:23,428 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2023-09-01 09:02:23,428 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:02:23,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 0/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-09-01 09:02:23,434 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2023-09-01 09:02:26,324 INFO L134 LiptonReduction]: Checked pairs total: 2433 [2023-09-01 09:02:26,324 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-09-01 09:02:26,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:02:26,342 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51b3ab90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:02:26,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 09:02:26,348 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-09-01 09:02:26,348 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:02:26,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:02:26,349 INFO L208 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] [2023-09-01 09:02:26,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:02:26,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:02:26,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1212926621, now seen corresponding path program 1 times [2023-09-01 09:02:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:02:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786184067] [2023-09-01 09:02:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:02:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:02:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:02:26,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 09:02:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:02:26,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 09:02:26,630 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 09:02:26,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 09:02:26,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 09:02:26,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 09:02:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:02:26,635 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 09:02:26,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:02:26,644 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:02:26,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:02:26 BasicIcfg [2023-09-01 09:02:26,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:02:26,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:02:26,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:02:26,695 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:02:26,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:23" (3/4) ... [2023-09-01 09:02:26,697 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 09:02:26,741 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:02:26,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:02:26,744 INFO L158 Benchmark]: Toolchain (without parser) took 4560.65ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 51.5MB in the end (delta: 15.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,744 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:02:26,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.73ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 47.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.68ms. Allocated memory is still 90.2MB. Free memory was 47.8MB in the beginning and 45.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,745 INFO L158 Benchmark]: Boogie Preprocessor took 26.30ms. Allocated memory is still 90.2MB. Free memory was 45.7MB in the beginning and 44.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,745 INFO L158 Benchmark]: RCFGBuilder took 414.77ms. Allocated memory is still 90.2MB. Free memory was 44.4MB in the beginning and 68.8MB in the end (delta: -24.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,745 INFO L158 Benchmark]: TraceAbstraction took 3599.53ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 57.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,746 INFO L158 Benchmark]: Witness Printer took 48.60ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 51.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:02:26,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 427.73ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 47.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.68ms. Allocated memory is still 90.2MB. Free memory was 47.8MB in the beginning and 45.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.30ms. Allocated memory is still 90.2MB. Free memory was 45.7MB in the beginning and 44.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.77ms. Allocated memory is still 90.2MB. Free memory was 44.4MB in the beginning and 68.8MB in the end (delta: -24.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3599.53ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 57.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 48.60ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 51.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 2433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1335, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 373, independent: 348, independent conditional: 0, independent unconditional: 348, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1335, independent: 822, independent conditional: 0, independent unconditional: 822, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 373, unknown conditional: 0, unknown unconditional: 373] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L697] 1 data1++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] 0 \read(t1) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 722]: 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. - UnprovableResult [Line: 721]: 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 5 procedures, 119 locations, 3 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: 3.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2023-09-01 09:02:26,775 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