./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 672adc4cc5a37e070cc95d046193d9ccd4d73b39f78c06c79ee40c1584c27afa --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 00:23:27,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:23:27,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:23:27,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:23:27,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:23:27,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:23:27,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:23:27,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:23:27,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:23:27,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:23:27,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:23:27,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:23:27,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:23:27,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:23:27,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:23:27,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:23:27,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:23:27,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:23:27,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:23:27,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:23:27,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:23:27,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:23:27,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:23:27,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:23:27,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:23:27,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:23:27,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:23:27,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:23:27,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:23:27,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:23:27,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:23:27,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:23:27,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:23:27,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:23:27,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:23:27,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:23:27,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:23:27,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:23:27,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:23:27,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:23:27,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:23:27,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:23:27,797 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:23:27,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:23:27,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:23:27,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:23:27,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:23:27,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:23:27,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:23:27,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:23:27,801 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:23:27,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:23:27,802 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:23:27,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:23:27,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:23:27,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:23:27,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:23:27,804 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:23:27,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:23:27,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:23:27,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:23:27,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:23:27,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:23:27,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:23:27,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:23:27,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:23:27,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:23:27,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:23:27,806 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:23:27,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:23:27,806 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:23:27,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672adc4cc5a37e070cc95d046193d9ccd4d73b39f78c06c79ee40c1584c27afa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:23:28,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:23:28,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:23:28,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:23:28,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:23:28,153 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:23:28,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:29,296 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:23:29,555 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:23:29,555 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:29,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4831c9bc/ba604879fbe0422fad274eb66f7b521c/FLAG1c3ce683a [2023-09-01 00:23:29,589 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4831c9bc/ba604879fbe0422fad274eb66f7b521c [2023-09-01 00:23:29,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:23:29,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:23:29,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:23:29,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:23:29,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:23:29,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:23:29" (1/1) ... [2023-09-01 00:23:29,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3632eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:29, skipping insertion in model container [2023-09-01 00:23:29,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:23:29" (1/1) ... [2023-09-01 00:23:29,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:23:29,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:23:29,817 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i[1097,1110] [2023-09-01 00:23:29,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:23:29,980 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:23:29,993 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i[1097,1110] [2023-09-01 00:23:30,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:23:30,065 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:23:30,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30 WrapperNode [2023-09-01 00:23:30,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:23:30,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:23:30,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:23:30,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:23:30,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,119 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-09-01 00:23:30,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:23:30,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:23:30,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:23:30,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:23:30,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:23:30,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:23:30,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:23:30,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:23:30,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (1/1) ... [2023-09-01 00:23:30,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:23:30,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:23:30,190 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 00:23:30,193 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 00:23:30,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:23:30,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:23:30,223 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:23:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:23:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:23:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:23:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:23:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:23:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:23:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:23:30,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:23:30,226 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 00:23:30,362 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:23:30,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:23:30,516 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:23:30,521 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:23:30,521 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:23:30,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:30 BoogieIcfgContainer [2023-09-01 00:23:30,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:23:30,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:23:30,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:23:30,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:23:30,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:23:29" (1/3) ... [2023-09-01 00:23:30,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8aa6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:23:30, skipping insertion in model container [2023-09-01 00:23:30,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:30" (2/3) ... [2023-09-01 00:23:30,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8aa6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:23:30, skipping insertion in model container [2023-09-01 00:23:30,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:30" (3/3) ... [2023-09-01 00:23:30,530 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:30,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:23:30,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:23:30,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:23:30,604 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:23:30,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 142 flow [2023-09-01 00:23:30,683 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2023-09-01 00:23:30,683 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:30,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 2/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-09-01 00:23:30,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 67 transitions, 142 flow [2023-09-01 00:23:30,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:30,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:23:30,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:30,727 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:30,757 INFO L130 PetriNetUnfolder]: 2/62 cut-off events. [2023-09-01 00:23:30,757 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 62 events. 2/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-09-01 00:23:30,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2023-09-01 00:23:32,975 INFO L134 LiptonReduction]: Checked pairs total: 628 [2023-09-01 00:23:32,975 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-09-01 00:23:32,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:23:32,991 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@55499e68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:23:32,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 00:23:32,993 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 00:23:32,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:23:32,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:32,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:23:32,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-09-01 00:23:32,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash 268, now seen corresponding path program 1 times [2023-09-01 00:23:33,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:23:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075483289] [2023-09-01 00:23:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:23:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:23:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:23:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075483289] [2023-09-01 00:23:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075483289] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:23:33,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:23:33,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:23:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257633186] [2023-09-01 00:23:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:23:33,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:23:33,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:23:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:23:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:23:33,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 136 [2023-09-01 00:23:33,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:33,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 136 [2023-09-01 00:23:33,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:33,192 INFO L130 PetriNetUnfolder]: 12/35 cut-off events. [2023-09-01 00:23:33,192 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 35 events. 12/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 87 event pairs, 12 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 62. Up to 36 conditions per place. [2023-09-01 00:23:33,195 INFO L137 encePairwiseOnDemand]: 134/136 looper letters, 11 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-09-01 00:23:33,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 50 flow [2023-09-01 00:23:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:23:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:23:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2023-09-01 00:23:33,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2023-09-01 00:23:33,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2023-09-01 00:23:33,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2023-09-01 00:23:33,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:33,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2023-09-01 00:23:33,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 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) [2023-09-01 00:23:33,225 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 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) [2023-09-01 00:23:33,226 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 2 states and 139 transitions. [2023-09-01 00:23:33,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 50 flow [2023-09-01 00:23:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:23:33,229 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 24 flow [2023-09-01 00:23:33,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-09-01 00:23:33,232 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2023-09-01 00:23:33,233 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 24 flow [2023-09-01 00:23:33,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:33,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:23:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:23:33,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-09-01 00:23:33,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 261037, now seen corresponding path program 1 times [2023-09-01 00:23:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:23:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142312089] [2023-09-01 00:23:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:23:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:23:33,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:23:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:23:33,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:23:33,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:23:33,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-09-01 00:23:33,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-09-01 00:23:33,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-09-01 00:23:33,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-09-01 00:23:33,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-09-01 00:23:33,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-09-01 00:23:33,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-09-01 00:23:33,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-09-01 00:23:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:23:33,338 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-09-01 00:23:33,346 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:23:33,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:23:33,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:23:33 BasicIcfg [2023-09-01 00:23:33,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:23:33,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:23:33,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:23:33,370 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:23:33,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:30" (3/4) ... [2023-09-01 00:23:33,373 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:23:33,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:23:33,375 INFO L158 Benchmark]: Toolchain (without parser) took 3782.06ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 37.2MB in the beginning and 40.3MB in the end (delta: -3.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-09-01 00:23:33,376 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:33,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.07ms. Allocated memory is still 69.2MB. Free memory was 37.0MB in the beginning and 33.7MB in the end (delta: 3.3MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-09-01 00:23:33,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.15ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 31.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:33,379 INFO L158 Benchmark]: Boogie Preprocessor took 30.28ms. Allocated memory is still 69.2MB. Free memory was 31.6MB in the beginning and 30.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:33,381 INFO L158 Benchmark]: RCFGBuilder took 371.68ms. Allocated memory is still 69.2MB. Free memory was 30.4MB in the beginning and 39.1MB in the end (delta: -8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-09-01 00:23:33,382 INFO L158 Benchmark]: TraceAbstraction took 2843.82ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 38.6MB in the beginning and 40.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-09-01 00:23:33,382 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:33,387 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 54.5MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.07ms. Allocated memory is still 69.2MB. Free memory was 37.0MB in the beginning and 33.7MB in the end (delta: 3.3MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.15ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 31.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.28ms. Allocated memory is still 69.2MB. Free memory was 31.6MB in the beginning and 30.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.68ms. Allocated memory is still 69.2MB. Free memory was 30.4MB in the beginning and 39.1MB in the end (delta: -8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2843.82ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 38.6MB in the beginning and 40.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 64 PlacesBefore, 17 PlacesAfterwards, 62 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 5 FixpointIterations, 33 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 438, independent: 395, independent conditional: 0, independent unconditional: 395, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 237, independent: 220, independent conditional: 0, independent unconditional: 220, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 438, independent: 175, independent conditional: 0, independent unconditional: 175, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND FALSE 1 !(t == 42) [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(t == 1) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: 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, 89 locations, 8 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: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:23:33,412 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 672adc4cc5a37e070cc95d046193d9ccd4d73b39f78c06c79ee40c1584c27afa --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 00:23:35,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:23:35,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:23:35,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:23:35,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:23:35,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:23:35,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:23:35,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:23:35,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:23:35,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:23:35,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:23:35,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:23:35,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:23:35,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:23:35,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:23:35,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:23:35,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:23:35,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:23:35,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:23:35,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:23:35,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:23:35,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:23:35,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:23:35,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:23:35,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:23:35,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:23:35,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:23:35,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:23:35,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:23:35,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:23:35,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:23:35,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:23:35,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:23:35,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:23:35,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:23:35,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:23:35,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:23:35,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:23:35,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:23:35,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:23:35,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:23:35,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 00:23:35,415 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:23:35,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:23:35,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:23:35,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:23:35,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:23:35,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:23:35,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:23:35,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:23:35,419 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:23:35,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:23:35,420 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:23:35,420 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:23:35,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:23:35,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:23:35,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:23:35,421 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:23:35,421 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:23:35,421 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:23:35,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:23:35,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:23:35,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 00:23:35,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 00:23:35,422 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:23:35,422 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:23:35,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:23:35,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:23:35,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:23:35,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:23:35,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:23:35,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:23:35,424 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 00:23:35,424 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 00:23:35,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:23:35,425 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:23:35,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:23:35,425 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 00:23:35,425 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:23:35,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672adc4cc5a37e070cc95d046193d9ccd4d73b39f78c06c79ee40c1584c27afa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:23:35,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:23:35,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:23:35,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:23:35,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:23:35,749 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:23:35,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:36,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:23:37,238 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:23:37,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:37,259 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42701c9/f07d07059bdd4318872dc8094b30d28b/FLAGd14cf2a8b [2023-09-01 00:23:37,281 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42701c9/f07d07059bdd4318872dc8094b30d28b [2023-09-01 00:23:37,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:23:37,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:23:37,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:23:37,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:23:37,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:23:37,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ceb968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37, skipping insertion in model container [2023-09-01 00:23:37,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:23:37,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:23:37,513 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i[1097,1110] [2023-09-01 00:23:37,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:23:37,676 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:23:37,684 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_pos.i[1097,1110] [2023-09-01 00:23:37,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:23:37,748 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:23:37,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37 WrapperNode [2023-09-01 00:23:37,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:23:37,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:23:37,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:23:37,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:23:37,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,791 INFO L138 Inliner]: procedures = 167, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-09-01 00:23:37,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:23:37,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:23:37,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:23:37,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:23:37,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:23:37,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:23:37,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:23:37,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:23:37,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (1/1) ... [2023-09-01 00:23:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:23:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:23:37,860 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 00:23:37,868 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 00:23:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 00:23:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:23:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:23:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:23:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:23:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:23:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:23:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 00:23:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 00:23:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-09-01 00:23:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:23:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:23:37,905 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 00:23:38,050 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:23:38,052 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:23:38,267 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:23:38,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:23:38,272 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:23:38,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:38 BoogieIcfgContainer [2023-09-01 00:23:38,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:23:38,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:23:38,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:23:38,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:23:38,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:23:37" (1/3) ... [2023-09-01 00:23:38,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@910472d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:23:38, skipping insertion in model container [2023-09-01 00:23:38,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:23:37" (2/3) ... [2023-09-01 00:23:38,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@910472d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:23:38, skipping insertion in model container [2023-09-01 00:23:38,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:38" (3/3) ... [2023-09-01 00:23:38,282 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_pos.i [2023-09-01 00:23:38,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:23:38,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:23:38,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:23:38,372 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:23:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 142 flow [2023-09-01 00:23:38,469 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2023-09-01 00:23:38,469 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:38,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 2/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-09-01 00:23:38,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 67 transitions, 142 flow [2023-09-01 00:23:38,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:38,482 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:23:38,494 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:38,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:38,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 130 flow [2023-09-01 00:23:38,520 INFO L130 PetriNetUnfolder]: 2/62 cut-off events. [2023-09-01 00:23:38,520 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:38,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 62 events. 2/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-09-01 00:23:38,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 352 [2023-09-01 00:23:42,225 INFO L134 LiptonReduction]: Checked pairs total: 637 [2023-09-01 00:23:42,225 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-09-01 00:23:42,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:23:42,240 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@75656322, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:23:42,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 00:23:42,242 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:23:42,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:23:42,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:42,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:23:42,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-09-01 00:23:42,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 261, now seen corresponding path program 1 times [2023-09-01 00:23:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:42,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968349089] [2023-09-01 00:23:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:42,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:23:42,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 00:23:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:23:42,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 00:23:42,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:23:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:42,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:23:42,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:23:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968349089] [2023-09-01 00:23:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968349089] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:23:42,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:23:42,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:23:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882525464] [2023-09-01 00:23:42,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:23:42,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:23:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:23:42,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:23:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:23:42,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 131 [2023-09-01 00:23:42,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:42,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:42,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 131 [2023-09-01 00:23:42,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:42,432 INFO L130 PetriNetUnfolder]: 12/35 cut-off events. [2023-09-01 00:23:42,432 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:23:42,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 35 events. 12/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 88 event pairs, 12 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 62. Up to 36 conditions per place. [2023-09-01 00:23:42,434 INFO L137 encePairwiseOnDemand]: 129/131 looper letters, 11 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-09-01 00:23:42,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 50 flow [2023-09-01 00:23:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:23:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:23:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2023-09-01 00:23:42,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305343511450382 [2023-09-01 00:23:42,469 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2023-09-01 00:23:42,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2023-09-01 00:23:42,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:42,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2023-09-01 00:23:42,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:42,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:42,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:42,482 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 2 states and 139 transitions. [2023-09-01 00:23:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 50 flow [2023-09-01 00:23:42,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:23:42,485 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 24 flow [2023-09-01 00:23:42,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-09-01 00:23:42,510 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2023-09-01 00:23:42,510 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 24 flow [2023-09-01 00:23:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:42,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:42,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:23:42,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 00:23:42,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:42,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-09-01 00:23:42,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 255234, now seen corresponding path program 1 times [2023-09-01 00:23:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172444701] [2023-09-01 00:23:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:42,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:42,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:42,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:23:42,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 00:23:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:23:42,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:23:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:23:42,822 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-09-01 00:23:42,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:23:42,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-09-01 00:23:42,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-09-01 00:23:42,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-09-01 00:23:42,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-09-01 00:23:42,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-09-01 00:23:42,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-09-01 00:23:42,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-09-01 00:23:42,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-09-01 00:23:42,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 00:23:43,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:43,038 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-09-01 00:23:43,042 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:23:43,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:23:43,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:23:43 BasicIcfg [2023-09-01 00:23:43,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:23:43,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:23:43,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:23:43,060 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:23:43,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:23:38" (3/4) ... [2023-09-01 00:23:43,063 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:23:43,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:23:43,064 INFO L158 Benchmark]: Toolchain (without parser) took 5778.87ms. Allocated memory was 69.2MB in the beginning and 111.1MB in the end (delta: 41.9MB). Free memory was 41.8MB in the beginning and 53.5MB in the end (delta: -11.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,064 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:43,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.63ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 41.8MB in the beginning and 67.2MB in the end (delta: -25.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.42ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 65.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,065 INFO L158 Benchmark]: Boogie Preprocessor took 24.07ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 63.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,066 INFO L158 Benchmark]: RCFGBuilder took 457.27ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 49.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,066 INFO L158 Benchmark]: TraceAbstraction took 4783.20ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 53.5MB in the end (delta: -4.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-09-01 00:23:43,067 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 111.1MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:23:43,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.63ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 41.8MB in the beginning and 67.2MB in the end (delta: -25.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.42ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 65.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.07ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 63.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 457.27ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 49.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4783.20ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 53.5MB in the end (delta: -4.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 111.1MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 64 PlacesBefore, 17 PlacesAfterwards, 62 TransitionsBefore, 13 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 637 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 422, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 226, independent: 208, independent conditional: 0, independent unconditional: 208, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 422, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 226, unknown conditional: 0, unknown unconditional: 226] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={7:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND FALSE 1 !(t == 42) [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(t == 1) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: 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, 88 locations, 8 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: 4.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:23:43,090 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 Result: UNKNOWN: Overapproximated counterexample