./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/36-apron_41-threadenter-no-locals_unknown_1_neg.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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:18:35,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:18:35,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:18:35,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:18:35,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:18:35,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:18:35,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:18:35,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:18:35,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:18:35,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:18:35,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:18:35,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:18:35,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:18:35,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:18:35,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:18:35,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:18:35,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:18:35,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:18:35,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:18:35,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:18:35,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:18:35,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:18:35,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:18:35,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:18:35,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:18:35,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:18:35,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:18:35,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:18:35,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:18:35,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:18:35,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:18:35,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:18:35,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:18:35,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:18:35,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:18:35,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:18:35,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:18:35,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:18:35,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:18:35,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:18:35,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:18:35,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:18:35,239 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:18:35,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:18:35,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:18:35,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:18:35,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:18:35,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:18:35,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:18:35,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:18:35,242 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:18:35,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:18:35,243 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:18:35,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:18:35,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:18:35,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:18:35,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:18:35,244 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:18:35,244 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:18:35,244 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:18:35,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:18:35,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:18:35,245 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:18:35,245 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:18:35,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:18:35,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:18:35,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:18:35,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:35,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:18:35,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:18:35,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:18:35,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:18:35,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:18:35,247 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:18:35,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:18:35,247 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:18:35,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:18:35,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:18:35,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:18:35,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:18:35,594 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:18:35,594 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:18:35,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:36,766 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:18:37,010 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:18:37,013 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:37,022 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5e607a5/73fe7d39370c4702acf039f10d55f4de/FLAG2b7a5b4ee [2023-08-29 22:18:37,036 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5e607a5/73fe7d39370c4702acf039f10d55f4de [2023-08-29 22:18:37,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:18:37,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:18:37,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:37,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:18:37,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:18:37,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292f25a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37, skipping insertion in model container [2023-08-29 22:18:37,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:18:37,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:18:37,269 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/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2023-08-29 22:18:37,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:37,437 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:18:37,449 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/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2023-08-29 22:18:37,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:37,523 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:18:37,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37 WrapperNode [2023-08-29 22:18:37,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:37,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:37,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:18:37,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:18:37,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,585 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-29 22:18:37,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:37,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:18:37,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:18:37,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:18:37,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:18:37,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:18:37,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:18:37,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:18:37,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:37,670 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) [2023-08-29 22:18:37,695 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 [2023-08-29 22:18:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:18:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:18:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:18:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:18:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:18:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:18:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:18:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:18:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:18:37,710 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:18:37,844 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:18:37,846 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:18:37,937 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:18:37,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:18:37,942 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:18:37,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:37 BoogieIcfgContainer [2023-08-29 22:18:37,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:18:37,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:18:37,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:18:37,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:18:37,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:18:37" (1/3) ... [2023-08-29 22:18:37,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b873682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:37, skipping insertion in model container [2023-08-29 22:18:37,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37" (2/3) ... [2023-08-29 22:18:37,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b873682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:37, skipping insertion in model container [2023-08-29 22:18:37,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:37" (3/3) ... [2023-08-29 22:18:37,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:37,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:18:37,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 22:18:37,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:18:37,999 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 22:18:38,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-08-29 22:18:38,048 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-29 22:18:38,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:38,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-08-29 22:18:38,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-08-29 22:18:38,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:38,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:18:38,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:38,077 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:38,089 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-29 22:18:38,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:38,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-08-29 22:18:38,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 300 [2023-08-29 22:18:39,532 INFO L134 LiptonReduction]: Checked pairs total: 262 [2023-08-29 22:18:39,533 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-29 22:18:39,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:18:39,550 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;@22556190, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:18:39,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 22:18:39,552 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 22:18:39,553 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:39,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:39,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:18:39,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:39,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-08-29 22:18:39,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:39,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710158629] [2023-08-29 22:18:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:39,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710158629] [2023-08-29 22:18:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710158629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:18:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755180042] [2023-08-29 22:18:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:18:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:18:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:18:39,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-08-29 22:18:39,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-08-29 22:18:39,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:39,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-08-29 22:18:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:39,699 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-08-29 22:18:39,700 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:39,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 14 events. 4/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 25 event pairs, 4 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 24. Up to 15 conditions per place. [2023-08-29 22:18:39,702 INFO L137 encePairwiseOnDemand]: 97/99 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-29 22:18:39,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-29 22:18:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:18:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:18:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-08-29 22:18:39,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-29 22:18:39,712 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-08-29 22:18:39,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-08-29 22:18:39,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:39,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-08-29 22:18:39,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2023-08-29 22:18:39,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-08-29 22:18:39,725 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-08-29 22:18:39,726 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-08-29 22:18:39,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-29 22:18:39,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:39,730 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-08-29 22:18:39,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=14, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-29 22:18:39,735 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-08-29 22:18:39,735 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-08-29 22:18:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-08-29 22:18:39,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:39,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:18:39,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:18:39,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:39,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 187078, now seen corresponding path program 1 times [2023-08-29 22:18:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948326726] [2023-08-29 22:18:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:39,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948326726] [2023-08-29 22:18:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948326726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:39,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:18:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51198154] [2023-08-29 22:18:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:18:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:18:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:18:39,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 99 [2023-08-29 22:18:39,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 14 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-08-29 22:18:39,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:39,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 99 [2023-08-29 22:18:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:39,991 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-29 22:18:39,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 12 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2023-08-29 22:18:39,992 INFO L137 encePairwiseOnDemand]: 96/99 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-08-29 22:18:39,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-08-29 22:18:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:18:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:18:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-08-29 22:18:40,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2023-08-29 22:18:40,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-08-29 22:18:40,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-08-29 22:18:40,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:40,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-08-29 22:18:40,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-08-29 22:18:40,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:40,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:40,006 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-08-29 22:18:40,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-08-29 22:18:40,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:18:40,007 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-08-29 22:18:40,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=14, PETRI_PLACES=11, PETRI_TRANSITIONS=4} [2023-08-29 22:18:40,007 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-29 22:18:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-08-29 22:18:40,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-08-29 22:18:40,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:40,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:18:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:18:40,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:40,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 187091, now seen corresponding path program 1 times [2023-08-29 22:18:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879387240] [2023-08-29 22:18:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:18:40,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 22:18:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:18:40,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 22:18:40,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 22:18:40,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-08-29 22:18:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-29 22:18:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-29 22:18:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-08-29 22:18:40,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-29 22:18:40,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-29 22:18:40,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:18:40,046 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 22:18:40,051 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:18:40,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:18:40,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:18:40 BasicIcfg [2023-08-29 22:18:40,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:18:40,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:18:40,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:18:40,066 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:18:40,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:37" (3/4) ... [2023-08-29 22:18:40,068 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 22:18:40,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:18:40,069 INFO L158 Benchmark]: Toolchain (without parser) took 3029.73ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 65.3MB in the beginning and 77.8MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-29 22:18:40,070 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:40,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.32ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 46.3MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 22:18:40,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.06ms. Allocated memory is still 88.1MB. Free memory was 46.3MB in the beginning and 67.8MB in the end (delta: -21.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-08-29 22:18:40,071 INFO L158 Benchmark]: Boogie Preprocessor took 51.45ms. Allocated memory is still 88.1MB. Free memory was 67.8MB in the beginning and 66.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:40,072 INFO L158 Benchmark]: RCFGBuilder took 305.89ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 55.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:18:40,072 INFO L158 Benchmark]: TraceAbstraction took 2119.22ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.8MB in the beginning and 77.8MB in the end (delta: -23.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:40,072 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 107.0MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:40,075 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 65.0MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.32ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 46.3MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.06ms. Allocated memory is still 88.1MB. Free memory was 46.3MB in the beginning and 67.8MB in the end (delta: -21.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.45ms. Allocated memory is still 88.1MB. Free memory was 67.8MB in the beginning and 66.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.89ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 55.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2119.22ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.8MB in the beginning and 77.8MB in the end (delta: -23.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 107.0MB. Free memory is still 77.8MB. 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: 1.5s, 46 PlacesBefore, 12 PlacesAfterwards, 43 TransitionsBefore, 8 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 262 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 262, independent: 262, independent conditional: 0, independent unconditional: 262, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 160, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 262, independent: 102, independent conditional: 0, independent unconditional: 102, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 160, unknown conditional: 0, unknown unconditional: 160] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 60 locations, 6 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: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2023-08-29 22:18:40,094 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/36-apron_41-threadenter-no-locals_unknown_1_neg.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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:18:41,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:18:41,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:18:41,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:18:41,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:18:41,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:18:41,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:18:41,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:18:41,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:18:41,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:18:41,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:18:41,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:18:41,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:18:41,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:18:41,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:18:41,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:18:41,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:18:41,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:18:41,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:18:41,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:18:41,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:18:41,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:18:41,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:18:41,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:18:41,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:18:41,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:18:41,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:18:41,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:18:41,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:18:41,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:18:41,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:18:41,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:18:41,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:18:41,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:18:41,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:18:41,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:18:41,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:18:41,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:18:41,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:18:41,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:18:41,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:18:41,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:18:41,963 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:18:41,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:18:41,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:18:41,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:18:41,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:18:41,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:18:41,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:18:41,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:18:41,966 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:18:41,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:18:41,966 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:18:41,967 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:18:41,968 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:18:41,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:18:41,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:18:41,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:18:41,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:41,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:18:41,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:18:41,970 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:18:41,971 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:18:41,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:18:42,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:18:42,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:18:42,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:18:42,277 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:18:42,277 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:18:42,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:43,391 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:18:43,604 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:18:43,604 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:43,615 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4ae878b/ff140fd3199144e8a447aac04e7952be/FLAG890bc5f47 [2023-08-29 22:18:43,629 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4ae878b/ff140fd3199144e8a447aac04e7952be [2023-08-29 22:18:43,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:18:43,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:18:43,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:43,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:18:43,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:18:43,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:43" (1/1) ... [2023-08-29 22:18:43,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40113186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:43, skipping insertion in model container [2023-08-29 22:18:43,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:43" (1/1) ... [2023-08-29 22:18:43,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:18:43,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:18:43,843 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/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2023-08-29 22:18:44,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:44,014 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:18:44,035 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/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2023-08-29 22:18:44,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:44,098 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:18:44,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44 WrapperNode [2023-08-29 22:18:44,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:44,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:44,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:18:44,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:18:44,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,154 INFO L138 Inliner]: procedures = 165, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-29 22:18:44,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:44,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:18:44,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:18:44,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:18:44,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:18:44,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:18:44,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:18:44,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:18:44,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (1/1) ... [2023-08-29 22:18:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:44,225 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) [2023-08-29 22:18:44,244 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 [2023-08-29 22:18:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:18:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:18:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:18:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:18:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:18:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:18:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:18:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:18:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:18:44,269 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:18:44,419 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:18:44,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:18:44,546 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:18:44,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:18:44,553 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:18:44,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:44 BoogieIcfgContainer [2023-08-29 22:18:44,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:18:44,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:18:44,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:18:44,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:18:44,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:18:43" (1/3) ... [2023-08-29 22:18:44,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a75a1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:44, skipping insertion in model container [2023-08-29 22:18:44,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:44" (2/3) ... [2023-08-29 22:18:44,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a75a1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:44, skipping insertion in model container [2023-08-29 22:18:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:44" (3/3) ... [2023-08-29 22:18:44,563 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-29 22:18:44,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:18:44,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 22:18:44,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:18:44,615 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 22:18:44,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-08-29 22:18:44,681 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-29 22:18:44,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:44,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-08-29 22:18:44,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-08-29 22:18:44,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:44,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:18:44,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:44,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:44,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-08-29 22:18:44,722 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-29 22:18:44,722 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:44,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-08-29 22:18:44,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2023-08-29 22:18:46,799 INFO L134 LiptonReduction]: Checked pairs total: 239 [2023-08-29 22:18:46,799 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-29 22:18:46,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:18:46,816 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;@30c325a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:18:46,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 22:18:46,817 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:18:46,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:46,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:46,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:18:46,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:46,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-08-29 22:18:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:18:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171770775] [2023-08-29 22:18:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:46,832 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 [2023-08-29 22:18:46,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:18:46,841 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) [2023-08-29 22:18:46,877 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 [2023-08-29 22:18:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:46,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 22:18:46,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:18:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:46,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:18:46,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:18:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171770775] [2023-08-29 22:18:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171770775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:18:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032897750] [2023-08-29 22:18:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:18:46,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:18:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:18:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:18:46,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2023-08-29 22:18:46,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-08-29 22:18:46,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:46,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2023-08-29 22:18:46,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:47,014 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-08-29 22:18:47,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:47,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 14 events. 4/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 25 event pairs, 4 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 24. Up to 15 conditions per place. [2023-08-29 22:18:47,016 INFO L137 encePairwiseOnDemand]: 94/96 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-29 22:18:47,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-29 22:18:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:18:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:18:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-08-29 22:18:47,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-08-29 22:18:47,025 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-08-29 22:18:47,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-08-29 22:18:47,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:47,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-08-29 22:18:47,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2023-08-29 22:18:47,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-08-29 22:18:47,055 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-08-29 22:18:47,056 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-08-29 22:18:47,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-29 22:18:47,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:47,069 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-08-29 22:18:47,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=14, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-29 22:18:47,073 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-08-29 22:18:47,073 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-08-29 22:18:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-08-29 22:18:47,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:47,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:18:47,091 INFO L552 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)] Ended with exit code 0 [2023-08-29 22:18:47,292 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 [2023-08-29 22:18:47,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:47,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash 185127, now seen corresponding path program 1 times [2023-08-29 22:18:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:18:47,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893003937] [2023-08-29 22:18:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:47,294 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 [2023-08-29 22:18:47,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:18:47,295 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) [2023-08-29 22:18:47,297 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 [2023-08-29 22:18:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:47,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 22:18:47,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:18:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:47,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:18:47,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:18:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893003937] [2023-08-29 22:18:47,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893003937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:47,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:18:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184292747] [2023-08-29 22:18:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:18:47,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:18:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:18:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:18:47,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2023-08-29 22:18:47,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 14 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-08-29 22:18:47,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:47,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2023-08-29 22:18:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:47,499 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-29 22:18:47,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:47,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 12 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2023-08-29 22:18:47,500 INFO L137 encePairwiseOnDemand]: 93/96 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-08-29 22:18:47,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-08-29 22:18:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:18:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:18:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-08-29 22:18:47,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2023-08-29 22:18:47,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-08-29 22:18:47,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-08-29 22:18:47,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:47,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-08-29 22:18:47,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-08-29 22:18:47,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-08-29 22:18:47,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-08-29 22:18:47,506 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-08-29 22:18:47,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-08-29 22:18:47,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:18:47,507 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-08-29 22:18:47,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=14, PETRI_PLACES=11, PETRI_TRANSITIONS=4} [2023-08-29 22:18:47,508 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-29 22:18:47,508 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-08-29 22:18:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-08-29 22:18:47,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:47,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:18:47,525 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 (3)] Forceful destruction successful, exit code 0 [2023-08-29 22:18:47,723 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 [2023-08-29 22:18:47,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-08-29 22:18:47,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 185129, now seen corresponding path program 1 times [2023-08-29 22:18:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:18:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647398718] [2023-08-29 22:18:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:47,725 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 [2023-08-29 22:18:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:18:47,731 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2023-08-29 22:18:47,763 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 (4)] Waiting until timeout for monitored process [2023-08-29 22:18:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:18:47,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 22:18:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:18:47,803 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 22:18:47,804 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-08-29 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-29 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-29 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-08-29 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-29 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-29 22:18:47,815 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 (4)] Forceful destruction successful, exit code 0 [2023-08-29 22:18:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 [2023-08-29 22:18:48,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 22:18:48,019 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:18:48,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:18:48,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:18:48 BasicIcfg [2023-08-29 22:18:48,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:18:48,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:18:48,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:18:48,033 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:18:48,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:44" (3/4) ... [2023-08-29 22:18:48,035 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 22:18:48,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:18:48,036 INFO L158 Benchmark]: Toolchain (without parser) took 4403.61ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 47.0MB in the beginning and 35.6MB in the end (delta: 11.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,036 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:48,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.86ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.01ms. Allocated memory is still 71.3MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,037 INFO L158 Benchmark]: Boogie Preprocessor took 38.27ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:48,038 INFO L158 Benchmark]: RCFGBuilder took 361.35ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 46.4MB in the end (delta: -6.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,038 INFO L158 Benchmark]: TraceAbstraction took 3474.57ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 45.8MB in the beginning and 36.2MB in the end (delta: 9.5MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,039 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 88.1MB. Free memory was 36.2MB in the beginning and 35.6MB in the end (delta: 616.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:48,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.86ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.01ms. Allocated memory is still 71.3MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.27ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.35ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 46.4MB in the end (delta: -6.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3474.57ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 45.8MB in the beginning and 36.2MB in the end (delta: 9.5MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 88.1MB. Free memory was 36.2MB in the beginning and 35.6MB in the end (delta: 616.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 46 PlacesBefore, 12 PlacesAfterwards, 43 TransitionsBefore, 8 TransitionsAfterwards, 280 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 239 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 239, independent: 239, independent conditional: 0, independent unconditional: 239, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 153, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 239, independent: 86, independent conditional: 0, independent unconditional: 86, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 153, unknown conditional: 0, unknown unconditional: 153] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 59 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2 ConstructedInterpolants, 2 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2023-08-29 22:18:48,057 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