./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:33:57,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:33:57,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:33:57,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:33:57,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:33:57,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:33:57,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:33:57,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:33:57,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:33:57,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:33:57,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:33:57,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:33:57,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:33:57,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:33:57,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:33:57,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:33:57,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:33:57,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:33:57,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:33:57,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:33:57,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:33:57,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:33:57,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:33:57,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:33:57,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:33:57,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:33:57,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:33:57,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:33:57,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:33:57,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:33:57,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:33:57,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:33:57,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:33:57,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:33:57,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:33:57,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:33:57,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:33:57,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:33:57,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:33:57,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:33:57,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:33:57,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:33:57,933 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:33:57,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:33:57,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:33:57,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:33:57,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:33:57,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:33:57,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:33:57,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:33:57,936 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:33:57,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:33:57,937 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:33:57,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:33:57,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:33:57,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:33:57,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:33:57,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:33:57,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:33:57,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:33:57,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:33:57,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:33:57,939 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:33:57,940 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:33:57,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:33:57,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:33:57,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:33:57,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:33:57,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:33:57,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:33:57,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:33:57,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:33:57,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:33:57,941 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:33:57,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:33:57,942 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:33:57,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:33:58,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:33:58,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:33:58,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:33:58,269 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:33:58,269 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:33:58,270 INFO L432 ainManager$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_pos.i [2023-08-30 04:33:59,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:33:59,772 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:33:59,772 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 04:33:59,783 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a7715da/b4b92d1a178245a5b2e7514d09c0b446/FLAG790a7396e [2023-08-30 04:33:59,798 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a7715da/b4b92d1a178245a5b2e7514d09c0b446 [2023-08-30 04:33:59,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:33:59,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:33:59,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:33:59,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:33:59,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:33:59,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:33:59" (1/1) ... [2023-08-30 04:33:59,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc1a1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:59, skipping insertion in model container [2023-08-30 04:33:59,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:33:59" (1/1) ... [2023-08-30 04:33:59,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:33:59,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:34:00,024 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_pos.i[1102,1115] [2023-08-30 04:34:00,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:34:00,198 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:34:00,211 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_pos.i[1102,1115] [2023-08-30 04:34:00,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:34:00,277 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:34:00,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00 WrapperNode [2023-08-30 04:34:00,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:34:00,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:34:00,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:34:00,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:34:00,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,332 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-30 04:34:00,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:34:00,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:34:00,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:34:00,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:34:00,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:34:00,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:34:00,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:34:00,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:34:00,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (1/1) ... [2023-08-30 04:34:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:34:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:34:00,450 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) [2023-08-30 04:34:00,462 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 [2023-08-30 04:34:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:34:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:34:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:34:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 04:34:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 04:34:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:34:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:34:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:34:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:34:00,488 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:34:00,616 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:34:00,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:34:00,712 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:34:00,717 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:34:00,717 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 04:34:00,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:00 BoogieIcfgContainer [2023-08-30 04:34:00,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:34:00,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:34:00,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:34:00,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:34:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:33:59" (1/3) ... [2023-08-30 04:34:00,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44af7023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:34:00, skipping insertion in model container [2023-08-30 04:34:00,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:00" (2/3) ... [2023-08-30 04:34:00,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44af7023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:34:00, skipping insertion in model container [2023-08-30 04:34:00,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:00" (3/3) ... [2023-08-30 04:34:00,726 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 04:34:00,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:34:00,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 04:34:00,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:34:00,778 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 04:34:00,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-08-30 04:34:00,838 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-30 04:34:00,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:00,842 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. [2023-08-30 04:34:00,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-08-30 04:34:00,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:00,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:34:00,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:00,859 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:00,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:00,870 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-30 04:34:00,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:00,871 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. [2023-08-30 04:34:00,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 300 [2023-08-30 04:34:02,283 INFO L134 LiptonReduction]: Checked pairs total: 262 [2023-08-30 04:34:02,283 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-30 04:34:02,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:34:02,300 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;@53b32029, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:34:02,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 04:34:02,301 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:34:02,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:02,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:02,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:34:02,302 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)] === [2023-08-30 04:34:02,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-08-30 04:34:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:34:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350531380] [2023-08-30 04:34:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:34:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:34:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:34:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:34:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350531380] [2023-08-30 04:34:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350531380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:34:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:34:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:34:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745397713] [2023-08-30 04:34:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:34:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:34:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:34:02,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:34:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:34:02,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-08-30 04:34:02,494 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) [2023-08-30 04:34:02,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:34:02,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-08-30 04:34:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:34:02,520 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-08-30 04:34:02,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:02,521 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. [2023-08-30 04:34:02,523 INFO L137 encePairwiseOnDemand]: 97/99 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-30 04:34:02,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-30 04:34:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:34:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:34:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-08-30 04:34:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-30 04:34:02,535 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-08-30 04:34:02,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-08-30 04:34:02,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:34:02,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-08-30 04:34:02,541 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) [2023-08-30 04:34:02,548 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) [2023-08-30 04:34:02,548 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) [2023-08-30 04:34:02,550 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-08-30 04:34:02,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-30 04:34:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:34:02,554 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-08-30 04:34:02,556 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} [2023-08-30 04:34:02,560 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-08-30 04:34:02,560 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-08-30 04:34:02,560 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) [2023-08-30 04:34:02,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:02,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:34:02,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:34:02,562 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)] === [2023-08-30 04:34:02,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 187078, now seen corresponding path program 1 times [2023-08-30 04:34:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:34:02,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932239480] [2023-08-30 04:34:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:02,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:34:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:34:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:34:02,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:34:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932239480] [2023-08-30 04:34:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932239480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:34:02,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:34:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:34:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134640083] [2023-08-30 04:34:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:34:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:34:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:34:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:34:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:34:02,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 99 [2023-08-30 04:34:02,832 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) [2023-08-30 04:34:02,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:34:02,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 99 [2023-08-30 04:34:02,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:34:02,852 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-30 04:34:02,853 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:02,853 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. [2023-08-30 04:34:02,854 INFO L137 encePairwiseOnDemand]: 96/99 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-08-30 04:34:02,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-08-30 04:34:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:34:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:34:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-08-30 04:34:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2023-08-30 04:34:02,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-08-30 04:34:02,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-08-30 04:34:02,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:34:02,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-08-30 04:34:02,861 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) [2023-08-30 04:34:02,862 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) [2023-08-30 04:34:02,862 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) [2023-08-30 04:34:02,862 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-08-30 04:34:02,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-08-30 04:34:02,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:34:02,863 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-08-30 04:34:02,864 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} [2023-08-30 04:34:02,864 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-30 04:34:02,864 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-08-30 04:34:02,865 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) [2023-08-30 04:34:02,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:02,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:34:02,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:34:02,865 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)] === [2023-08-30 04:34:02,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 187091, now seen corresponding path program 1 times [2023-08-30 04:34:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:34:02,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466861836] [2023-08-30 04:34:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:34:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:34:02,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 04:34:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:34:02,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 04:34:02,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 04:34:02,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-08-30 04:34:02,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-30 04:34:02,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 04:34:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-08-30 04:34:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-30 04:34:02,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 04:34:02,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:34:02,935 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 04:34:02,940 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 04:34:02,940 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 04:34:02,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:34:02 BasicIcfg [2023-08-30 04:34:02,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 04:34:02,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 04:34:02,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 04:34:02,966 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 04:34:02,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:00" (3/4) ... [2023-08-30 04:34:02,970 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 04:34:02,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 04:34:02,971 INFO L158 Benchmark]: Toolchain (without parser) took 3169.07ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 68.9MB in the beginning and 62.2MB in the end (delta: 6.7MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-08-30 04:34:02,972 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:34:02,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.23ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 50.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 04:34:02,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.53ms. Allocated memory is still 92.3MB. Free memory was 50.4MB in the beginning and 48.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:34:02,977 INFO L158 Benchmark]: Boogie Preprocessor took 38.76ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:34:02,977 INFO L158 Benchmark]: RCFGBuilder took 346.05ms. Allocated memory is still 92.3MB. Free memory was 47.1MB in the beginning and 61.7MB in the end (delta: -14.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-08-30 04:34:02,978 INFO L158 Benchmark]: TraceAbstraction took 2244.09ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.7MB in the beginning and 62.5MB in the end (delta: -1.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-08-30 04:34:02,978 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 62.2MB in the end (delta: 331.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:34:02,985 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 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.23ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 50.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.53ms. Allocated memory is still 92.3MB. Free memory was 50.4MB in the beginning and 48.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.76ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.05ms. Allocated memory is still 92.3MB. Free memory was 47.1MB in the beginning and 61.7MB in the end (delta: -14.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2244.09ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.7MB in the beginning and 62.5MB in the end (delta: -1.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 62.2MB in the end (delta: 331.8kB). 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: 1.4s, 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: 2.1s, 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 [2023-08-30 04:34:03,014 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_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:34:04,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:34:04,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:34:04,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:34:04,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:34:04,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:34:04,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:34:04,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:34:04,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:34:04,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:34:04,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:34:04,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:34:04,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:34:04,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:34:04,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:34:04,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:34:04,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:34:04,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:34:04,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:34:04,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:34:04,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:34:04,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:34:04,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:34:04,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:34:05,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:34:05,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:34:05,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:34:05,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:34:05,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:34:05,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:34:05,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:34:05,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:34:05,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:34:05,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:34:05,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:34:05,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:34:05,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:34:05,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:34:05,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:34:05,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:34:05,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:34:05,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 04:34:05,046 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:34:05,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:34:05,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:34:05,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:34:05,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:34:05,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:34:05,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:34:05,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:34:05,048 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:34:05,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:34:05,049 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:34:05,050 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:34:05,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:34:05,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:34:05,051 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:34:05,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:34:05,052 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 04:34:05,052 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:34:05,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:34:05,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:34:05,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:34:05,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:34:05,391 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:34:05,392 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:34:05,393 INFO L432 ainManager$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_pos.i [2023-08-30 04:34:06,474 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:34:06,714 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:34:06,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 04:34:06,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723c75600/f41d9203f37d4d79be1a0910c28662ae/FLAG85d15b0a4 [2023-08-30 04:34:06,749 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723c75600/f41d9203f37d4d79be1a0910c28662ae [2023-08-30 04:34:06,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:34:06,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:34:06,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:34:06,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:34:06,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:34:06,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:34:06" (1/1) ... [2023-08-30 04:34:06,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4940b710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:06, skipping insertion in model container [2023-08-30 04:34:06,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:34:06" (1/1) ... [2023-08-30 04:34:06,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:34:06,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:34:06,934 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_pos.i[1102,1115] [2023-08-30 04:34:07,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:34:07,109 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:34:07,123 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_pos.i[1102,1115] [2023-08-30 04:34:07,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:34:07,209 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:34:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07 WrapperNode [2023-08-30 04:34:07,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:34:07,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:34:07,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:34:07,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:34:07,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,265 INFO L138 Inliner]: procedures = 165, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-30 04:34:07,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:34:07,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:34:07,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:34:07,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:34:07,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:34:07,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:34:07,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:34:07,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:34:07,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (1/1) ... [2023-08-30 04:34:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:34:07,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:34:07,338 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) [2023-08-30 04:34:07,354 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 [2023-08-30 04:34:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:34:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:34:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 04:34:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 04:34:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:34:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 04:34:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 04:34:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:34:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:34:07,382 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:34:07,512 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:34:07,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:34:07,694 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:34:07,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:34:07,699 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 04:34:07,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:07 BoogieIcfgContainer [2023-08-30 04:34:07,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:34:07,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:34:07,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:34:07,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:34:07,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:34:06" (1/3) ... [2023-08-30 04:34:07,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602bcb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:34:07, skipping insertion in model container [2023-08-30 04:34:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:34:07" (2/3) ... [2023-08-30 04:34:07,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602bcb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:34:07, skipping insertion in model container [2023-08-30 04:34:07,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:07" (3/3) ... [2023-08-30 04:34:07,714 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 04:34:07,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:34:07,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 04:34:07,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:34:07,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 04:34:07,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-08-30 04:34:07,892 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-30 04:34:07,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:07,897 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. [2023-08-30 04:34:07,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-08-30 04:34:07,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:07,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:34:07,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:07,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:07,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-08-30 04:34:07,949 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-08-30 04:34:07,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:07,951 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. [2023-08-30 04:34:07,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2023-08-30 04:34:10,164 INFO L134 LiptonReduction]: Checked pairs total: 239 [2023-08-30 04:34:10,164 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-30 04:34:10,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:34:10,181 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;@335fb77c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:34:10,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 04:34:10,183 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:34:10,183 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:10,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:10,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:34:10,184 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)] === [2023-08-30 04:34:10,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-08-30 04:34:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:34:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463452074] [2023-08-30 04:34:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:10,201 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 [2023-08-30 04:34:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:34:10,204 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) [2023-08-30 04:34:10,216 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 [2023-08-30 04:34:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:34:10,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 04:34:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:34:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:34:10,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:34:10,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:34:10,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463452074] [2023-08-30 04:34:10,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463452074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:34:10,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:34:10,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:34:10,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391164574] [2023-08-30 04:34:10,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:34:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:34:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:34:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:34:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:34:10,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2023-08-30 04:34:10,329 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) [2023-08-30 04:34:10,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:34:10,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2023-08-30 04:34:10,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:34:10,370 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-08-30 04:34:10,370 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:10,370 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. [2023-08-30 04:34:10,371 INFO L137 encePairwiseOnDemand]: 94/96 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-30 04:34:10,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-30 04:34:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:34:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:34:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-08-30 04:34:10,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-08-30 04:34:10,395 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-08-30 04:34:10,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-08-30 04:34:10,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:34:10,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-08-30 04:34:10,400 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) [2023-08-30 04:34:10,418 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) [2023-08-30 04:34:10,419 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) [2023-08-30 04:34:10,421 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-08-30 04:34:10,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-30 04:34:10,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:34:10,424 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-08-30 04:34:10,425 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} [2023-08-30 04:34:10,428 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-08-30 04:34:10,428 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-08-30 04:34:10,429 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) [2023-08-30 04:34:10,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:10,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:34:10,445 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 [2023-08-30 04:34:10,641 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 [2023-08-30 04:34:10,641 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)] === [2023-08-30 04:34:10,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 185127, now seen corresponding path program 1 times [2023-08-30 04:34:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:34:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754762633] [2023-08-30 04:34:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:10,643 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 [2023-08-30 04:34:10,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:34:10,645 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) [2023-08-30 04:34:10,652 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 [2023-08-30 04:34:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:34:10,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 04:34:10,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:34:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:34:10,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:34:10,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:34:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754762633] [2023-08-30 04:34:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754762633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:34:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:34:10,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:34:10,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165813264] [2023-08-30 04:34:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:34:10,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:34:10,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:34:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:34:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:34:10,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2023-08-30 04:34:10,829 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) [2023-08-30 04:34:10,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:34:10,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2023-08-30 04:34:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:34:10,860 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-30 04:34:10,860 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:34:10,860 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. [2023-08-30 04:34:10,860 INFO L137 encePairwiseOnDemand]: 93/96 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-08-30 04:34:10,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-08-30 04:34:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:34:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:34:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-08-30 04:34:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2023-08-30 04:34:10,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-08-30 04:34:10,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-08-30 04:34:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:34:10,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-08-30 04:34:10,865 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) [2023-08-30 04:34:10,867 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) [2023-08-30 04:34:10,867 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) [2023-08-30 04:34:10,867 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-08-30 04:34:10,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-08-30 04:34:10,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:34:10,868 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-08-30 04:34:10,868 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} [2023-08-30 04:34:10,869 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-30 04:34:10,869 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-08-30 04:34:10,869 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) [2023-08-30 04:34:10,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:34:10,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:34:10,887 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 [2023-08-30 04:34:11,081 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 [2023-08-30 04:34:11,082 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)] === [2023-08-30 04:34:11,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:34:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 185129, now seen corresponding path program 1 times [2023-08-30 04:34:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:34:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573337330] [2023-08-30 04:34:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:34:11,083 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 [2023-08-30 04:34:11,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:34:11,084 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) [2023-08-30 04:34:11,087 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 [2023-08-30 04:34:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:34:11,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 04:34:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:34:11,169 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 04:34:11,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 04:34:11,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-08-30 04:34:11,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-30 04:34:11,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 04:34:11,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-08-30 04:34:11,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-30 04:34:11,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 04:34:11,191 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 [2023-08-30 04:34:11,388 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 [2023-08-30 04:34:11,388 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 04:34:11,393 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 04:34:11,393 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 04:34:11,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:34:11 BasicIcfg [2023-08-30 04:34:11,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 04:34:11,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 04:34:11,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 04:34:11,406 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 04:34:11,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:34:07" (3/4) ... [2023-08-30 04:34:11,408 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 04:34:11,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 04:34:11,409 INFO L158 Benchmark]: Toolchain (without parser) took 4655.95ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 38.7MB in the end (delta: 5.1MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,412 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:34:11,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.81ms. Allocated memory is still 67.1MB. Free memory was 43.6MB in the beginning and 41.1MB in the end (delta: 2.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.31ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 39.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,416 INFO L158 Benchmark]: Boogie Preprocessor took 43.48ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 37.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,416 INFO L158 Benchmark]: RCFGBuilder took 389.51ms. Allocated memory is still 67.1MB. Free memory was 37.5MB in the beginning and 44.2MB in the end (delta: -6.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,417 INFO L158 Benchmark]: TraceAbstraction took 3702.82ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.4MB in the beginning and 39.4MB in the end (delta: 4.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-08-30 04:34:11,417 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 81.8MB. Free memory was 39.4MB in the beginning and 38.7MB in the end (delta: 659.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:34:11,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.81ms. Allocated memory is still 67.1MB. Free memory was 43.6MB in the beginning and 41.1MB in the end (delta: 2.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.31ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 39.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.48ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 37.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 389.51ms. Allocated memory is still 67.1MB. Free memory was 37.5MB in the beginning and 44.2MB in the end (delta: -6.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3702.82ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.4MB in the beginning and 39.4MB in the end (delta: 4.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 81.8MB. Free memory was 39.4MB in the beginning and 38.7MB in the end (delta: 659.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 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: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, 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 [2023-08-30 04:34:11,441 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