./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:13:11,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:13:11,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:13:11,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:13:11,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:13:11,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:13:11,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:13:11,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:13:11,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:13:11,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:13:11,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:13:11,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:13:11,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:13:11,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:13:11,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:13:11,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:13:11,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:13:11,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:13:11,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:13:11,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:13:11,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:13:11,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:13:11,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:13:11,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:13:11,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:13:11,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:13:11,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:13:11,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:13:11,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:13:11,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:13:11,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:13:11,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:13:11,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:13:11,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:13:11,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:13:11,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:13:11,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:13:11,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:13:11,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:13:11,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:13:11,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:13:11,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:13:11,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:13:11,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:13:11,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:13:11,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:13:11,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:13:11,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:13:11,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:13:11,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:13:11,570 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:13:11,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:13:11,571 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:13:11,571 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:13:11,572 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:13:11,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:13:11,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:13:11,573 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:13:11,573 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:13:11,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:13:11,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:13:11,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:13:11,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:13:11,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:13:11,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:13:11,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:13:11,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:13:11,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:13:11,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:13:11,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:13:11,576 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:13:11,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:13:11,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:13:11,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:13:11,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:13:11,903 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:13:11,903 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:13:11,904 INFO L432 ainManager$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 [2023-09-01 01:13:13,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:13:13,319 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:13:13,319 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 01:13:13,328 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3110220b/0ef1018b61c9447f9e32ffc4a30b86ec/FLAGe75cd9a94 [2023-09-01 01:13:13,344 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3110220b/0ef1018b61c9447f9e32ffc4a30b86ec [2023-09-01 01:13:13,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:13:13,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:13:13,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:13:13,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:13:13,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:13:13,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54058b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13, skipping insertion in model container [2023-09-01 01:13:13,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:13:13,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:13:13,545 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] [2023-09-01 01:13:13,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:13:13,706 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:13:13,718 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] [2023-09-01 01:13:13,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:13:13,787 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:13:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13 WrapperNode [2023-09-01 01:13:13,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:13:13,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:13:13,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:13:13,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:13:13,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,838 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-09-01 01:13:13,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:13:13,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:13:13,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:13:13,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:13:13,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:13:13,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:13:13,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:13:13,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:13:13,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (1/1) ... [2023-09-01 01:13:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:13:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:13:13,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 01:13:13,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 01:13:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 01:13:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:13:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:13:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 01:13:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 01:13:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:13:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 01:13:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:13:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:13:13,950 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:13:14,059 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:13:14,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:13:14,154 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:13:14,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:13:14,159 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 01:13:14,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:14 BoogieIcfgContainer [2023-09-01 01:13:14,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:13:14,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:13:14,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:13:14,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:13:14,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:13:13" (1/3) ... [2023-09-01 01:13:14,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153cc5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:13:14, skipping insertion in model container [2023-09-01 01:13:14,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:13" (2/3) ... [2023-09-01 01:13:14,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153cc5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:13:14, skipping insertion in model container [2023-09-01 01:13:14,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:14" (3/3) ... [2023-09-01 01:13:14,167 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 01:13:14,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:13:14,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 01:13:14,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:13:14,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 01:13:14,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-09-01 01:13:14,346 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-09-01 01:13:14,349 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:14,352 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. [2023-09-01 01:13:14,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-09-01 01:13:14,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:14,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:13:14,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:14,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:14,397 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-09-01 01:13:14,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:14,398 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. [2023-09-01 01:13:14,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 300 [2023-09-01 01:13:15,925 INFO L134 LiptonReduction]: Checked pairs total: 262 [2023-09-01 01:13:15,925 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-09-01 01:13:15,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:13:15,950 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;@136ceb9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:13:15,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 01:13:15,952 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 01:13:15,952 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:15,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:15,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:13:15,954 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)] === [2023-09-01 01:13:15,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-09-01 01:13:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:13:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754329583] [2023-09-01 01:13:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:13:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:13:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:13:16,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:13:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754329583] [2023-09-01 01:13:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754329583] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:13:16,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:13:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:13:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443946823] [2023-09-01 01:13:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:13:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:13:16,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:13:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:13:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:13:16,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-09-01 01:13:16,106 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) [2023-09-01 01:13:16,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:13:16,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-09-01 01:13:16,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:13:16,127 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-09-01 01:13:16,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:16,128 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. [2023-09-01 01:13:16,129 INFO L137 encePairwiseOnDemand]: 97/99 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-09-01 01:13:16,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-09-01 01:13:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:13:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:13:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-09-01 01:13:16,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-09-01 01:13:16,140 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-09-01 01:13:16,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-09-01 01:13:16,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:13:16,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-09-01 01:13:16,146 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) [2023-09-01 01:13:16,153 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) [2023-09-01 01:13:16,153 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) [2023-09-01 01:13:16,155 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-09-01 01:13:16,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-09-01 01:13:16,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:13:16,159 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-09-01 01:13:16,160 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} [2023-09-01 01:13:16,163 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-09-01 01:13:16,163 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-09-01 01:13:16,164 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) [2023-09-01 01:13:16,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:16,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:13:16,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 01:13:16,165 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)] === [2023-09-01 01:13:16,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash 187078, now seen corresponding path program 1 times [2023-09-01 01:13:16,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:13:16,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237579664] [2023-09-01 01:13:16,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:16,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:13:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:13:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:13:16,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:13:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237579664] [2023-09-01 01:13:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237579664] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:13:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:13:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:13:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838282225] [2023-09-01 01:13:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:13:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:13:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:13:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:13:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:13:16,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 99 [2023-09-01 01:13:16,359 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) [2023-09-01 01:13:16,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:13:16,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 99 [2023-09-01 01:13:16,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:13:16,370 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-09-01 01:13:16,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:16,371 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. [2023-09-01 01:13:16,371 INFO L137 encePairwiseOnDemand]: 96/99 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-09-01 01:13:16,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-09-01 01:13:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:13:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:13:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-09-01 01:13:16,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2023-09-01 01:13:16,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-09-01 01:13:16,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-09-01 01:13:16,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:13:16,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-09-01 01:13:16,375 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) [2023-09-01 01:13:16,376 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) [2023-09-01 01:13:16,376 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) [2023-09-01 01:13:16,376 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-09-01 01:13:16,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-09-01 01:13:16,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:13:16,377 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-09-01 01:13:16,377 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} [2023-09-01 01:13:16,378 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-09-01 01:13:16,378 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-09-01 01:13:16,378 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) [2023-09-01 01:13:16,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:13:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 01:13:16,379 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)] === [2023-09-01 01:13:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 187091, now seen corresponding path program 1 times [2023-09-01 01:13:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:13:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792101975] [2023-09-01 01:13:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:13:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 01:13:16,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 01:13:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 01:13:16,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 01:13:16,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 01:13:16,418 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-09-01 01:13:16,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-09-01 01:13:16,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-09-01 01:13:16,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-09-01 01:13:16,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-09-01 01:13:16,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-09-01 01:13:16,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 01:13:16,421 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-09-01 01:13:16,425 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 01:13:16,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 01:13:16,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:13:16 BasicIcfg [2023-09-01 01:13:16,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 01:13:16,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 01:13:16,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 01:13:16,440 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 01:13:16,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:14" (3/4) ... [2023-09-01 01:13:16,442 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 01:13:16,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 01:13:16,443 INFO L158 Benchmark]: Toolchain (without parser) took 3094.20ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 51.8MB in the beginning and 44.7MB in the end (delta: 7.1MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,443 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:13:16,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.71ms. Allocated memory is still 75.5MB. Free memory was 51.6MB in the beginning and 51.4MB in the end (delta: 148.1kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.74ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 49.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,444 INFO L158 Benchmark]: Boogie Preprocessor took 36.99ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 48.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,445 INFO L158 Benchmark]: RCFGBuilder took 284.07ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 37.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,445 INFO L158 Benchmark]: TraceAbstraction took 2276.28ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 44.7MB in the end (delta: -8.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-09-01 01:13:16,446 INFO L158 Benchmark]: Witness Printer took 2.78ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:13:16,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.71ms. Allocated memory is still 75.5MB. Free memory was 51.6MB in the beginning and 51.4MB in the end (delta: 148.1kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.74ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 49.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.99ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 48.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.07ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 37.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2276.28ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 44.7MB in the end (delta: -8.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 2.78ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. 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: 1.6s, 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: 1.6s, 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, 0.1s 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 [2023-09-01 01:13:16,469 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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:13:18,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:13:18,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:13:18,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:13:18,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:13:18,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:13:18,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:13:18,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:13:18,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:13:18,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:13:18,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:13:18,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:13:18,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:13:18,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:13:18,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:13:18,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:13:18,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:13:18,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:13:18,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:13:18,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:13:18,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:13:18,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:13:18,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:13:18,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:13:18,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:13:18,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:13:18,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:13:18,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:13:18,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:13:18,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:13:18,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:13:18,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:13:18,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:13:18,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:13:18,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:13:18,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:13:18,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:13:18,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:13:18,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:13:18,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:13:18,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:13:18,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 01:13:18,411 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:13:18,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:13:18,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:13:18,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:13:18,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:13:18,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:13:18,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:13:18,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:13:18,414 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:13:18,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:13:18,415 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:13:18,416 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 01:13:18,417 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:13:18,418 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:13:18,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:13:18,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:13:18,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:13:18,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:13:18,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:13:18,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:13:18,419 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 01:13:18,419 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 01:13:18,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:13:18,420 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:13:18,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:13:18,420 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 01:13:18,420 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:13:18,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:13:18,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:13:18,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:13:18,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:13:18,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:13:18,749 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:13:18,750 INFO L432 ainManager$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 [2023-09-01 01:13:19,881 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:13:20,088 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:13:20,092 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 01:13:20,105 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159409336/0f70c28eb3be445b8905d756f2eadb2f/FLAG024e651c8 [2023-09-01 01:13:20,116 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159409336/0f70c28eb3be445b8905d756f2eadb2f [2023-09-01 01:13:20,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:13:20,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:13:20,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:13:20,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:13:20,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:13:20,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3240b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20, skipping insertion in model container [2023-09-01 01:13:20,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:13:20,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:13:20,286 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] [2023-09-01 01:13:20,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:13:20,455 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:13:20,469 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] [2023-09-01 01:13:20,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:13:20,548 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:13:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20 WrapperNode [2023-09-01 01:13:20,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:13:20,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:13:20,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:13:20,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:13:20,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,607 INFO L138 Inliner]: procedures = 165, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-09-01 01:13:20,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:13:20,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:13:20,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:13:20,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:13:20,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:13:20,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:13:20,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:13:20,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:13:20,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (1/1) ... [2023-09-01 01:13:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:13:20,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:13:20,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 01:13:20,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 01:13:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:13:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:13:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 01:13:20,725 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 01:13:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:13:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 01:13:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 01:13:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:13:20,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:13:20,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:13:20,829 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:13:20,833 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:13:20,948 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:13:20,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:13:20,962 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 01:13:20,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:20 BoogieIcfgContainer [2023-09-01 01:13:20,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:13:20,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:13:20,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:13:20,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:13:20,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:13:20" (1/3) ... [2023-09-01 01:13:20,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117240e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:13:20, skipping insertion in model container [2023-09-01 01:13:20,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:13:20" (2/3) ... [2023-09-01 01:13:20,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117240e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:13:20, skipping insertion in model container [2023-09-01 01:13:20,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:20" (3/3) ... [2023-09-01 01:13:20,985 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 01:13:21,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:13:21,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 01:13:21,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:13:21,087 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 01:13:21,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 93 flow [2023-09-01 01:13:21,164 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-09-01 01:13:21,169 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:21,172 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. [2023-09-01 01:13:21,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 93 flow [2023-09-01 01:13:21,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:21,180 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:13:21,198 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:21,207 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:21,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 89 flow [2023-09-01 01:13:21,223 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2023-09-01 01:13:21,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:21,224 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. [2023-09-01 01:13:21,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2023-09-01 01:13:23,424 INFO L134 LiptonReduction]: Checked pairs total: 239 [2023-09-01 01:13:23,424 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-09-01 01:13:23,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:13:23,446 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;@2d16d44c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:13:23,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 01:13:23,447 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 01:13:23,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:23,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:23,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:13:23,448 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)] === [2023-09-01 01:13:23,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2023-09-01 01:13:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:13:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206052962] [2023-09-01 01:13:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:23,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:13:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:13:23,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:13:23,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 01:13:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:13:23,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 01:13:23,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:13:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:13:23,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:13:23,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:13:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206052962] [2023-09-01 01:13:23,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206052962] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:13:23,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:13:23,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:13:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217798394] [2023-09-01 01:13:23,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:13:23,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:13:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:13:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:13:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:13:23,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2023-09-01 01:13:23,579 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) [2023-09-01 01:13:23,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:13:23,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2023-09-01 01:13:23,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:13:23,625 INFO L130 PetriNetUnfolder]: 4/14 cut-off events. [2023-09-01 01:13:23,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:23,626 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. [2023-09-01 01:13:23,627 INFO L137 encePairwiseOnDemand]: 94/96 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-09-01 01:13:23,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-09-01 01:13:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:13:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:13:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-09-01 01:13:23,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-09-01 01:13:23,659 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-09-01 01:13:23,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-09-01 01:13:23,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:13:23,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-09-01 01:13:23,664 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) [2023-09-01 01:13:23,668 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) [2023-09-01 01:13:23,669 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) [2023-09-01 01:13:23,671 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 2 states and 90 transitions. [2023-09-01 01:13:23,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-09-01 01:13:23,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:13:23,676 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 14 flow [2023-09-01 01:13:23,678 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} [2023-09-01 01:13:23,680 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-09-01 01:13:23,680 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 14 flow [2023-09-01 01:13:23,681 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) [2023-09-01 01:13:23,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:23,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:13:23,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 01:13:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:13:23,882 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)] === [2023-09-01 01:13:23,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 185127, now seen corresponding path program 1 times [2023-09-01 01:13:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:13:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835585288] [2023-09-01 01:13:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:23,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:13:23,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:13:23,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:13:23,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 01:13:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:13:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 01:13:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:13:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:13:24,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:13:24,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:13:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835585288] [2023-09-01 01:13:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835585288] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:13:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:13:24,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:13:24,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056541203] [2023-09-01 01:13:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:13:24,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:13:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:13:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:13:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:13:24,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2023-09-01 01:13:24,066 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) [2023-09-01 01:13:24,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:13:24,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2023-09-01 01:13:24,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:13:24,114 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-09-01 01:13:24,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:13:24,114 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. [2023-09-01 01:13:24,115 INFO L137 encePairwiseOnDemand]: 93/96 looper letters, 3 selfloop transitions, 2 changer transitions 2/7 dead transitions. [2023-09-01 01:13:24,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 30 flow [2023-09-01 01:13:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:13:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:13:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-09-01 01:13:24,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2023-09-01 01:13:24,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-09-01 01:13:24,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-09-01 01:13:24,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:13:24,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-09-01 01:13:24,121 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) [2023-09-01 01:13:24,123 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) [2023-09-01 01:13:24,125 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) [2023-09-01 01:13:24,125 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 14 flow. Second operand 3 states and 119 transitions. [2023-09-01 01:13:24,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 30 flow [2023-09-01 01:13:24,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:13:24,126 INFO L231 Difference]: Finished difference. Result has 11 places, 4 transitions, 14 flow [2023-09-01 01:13:24,127 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} [2023-09-01 01:13:24,128 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-09-01 01:13:24,128 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 14 flow [2023-09-01 01:13:24,128 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) [2023-09-01 01:13:24,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:13:24,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:13:24,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 01:13:24,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:13:24,337 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)] === [2023-09-01 01:13:24,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:13:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash 185129, now seen corresponding path program 1 times [2023-09-01 01:13:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:13:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766205682] [2023-09-01 01:13:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:13:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:13:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:13:24,366 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) [2023-09-01 01:13:24,368 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 [2023-09-01 01:13:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 01:13:24,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 01:13:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 01:13:24,431 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-09-01 01:13:24,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 01:13:24,436 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-09-01 01:13:24,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-09-01 01:13:24,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-09-01 01:13:24,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-09-01 01:13:24,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-09-01 01:13:24,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-09-01 01:13:24,450 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 [2023-09-01 01:13:24,650 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 [2023-09-01 01:13:24,650 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-09-01 01:13:24,655 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 01:13:24,655 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 01:13:24,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:13:24 BasicIcfg [2023-09-01 01:13:24,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 01:13:24,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 01:13:24,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 01:13:24,669 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 01:13:24,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:13:20" (3/4) ... [2023-09-01 01:13:24,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 01:13:24,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 01:13:24,673 INFO L158 Benchmark]: Toolchain (without parser) took 4553.92ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 38.5MB in the beginning and 58.3MB in the end (delta: -19.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,673 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 55.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:13:24,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.48ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 38.2MB in the beginning and 59.6MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.53ms. Allocated memory is still 90.2MB. Free memory was 59.6MB in the beginning and 57.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,674 INFO L158 Benchmark]: Boogie Preprocessor took 43.59ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 56.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,675 INFO L158 Benchmark]: RCFGBuilder took 322.83ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 69.0MB in the end (delta: -12.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,675 INFO L158 Benchmark]: TraceAbstraction took 3690.05ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 68.6MB in the beginning and 59.0MB in the end (delta: 9.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2023-09-01 01:13:24,676 INFO L158 Benchmark]: Witness Printer took 3.11ms. Allocated memory is still 109.1MB. Free memory was 59.0MB in the beginning and 58.3MB in the end (delta: 773.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:13:24,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 55.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.48ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 38.2MB in the beginning and 59.6MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.53ms. Allocated memory is still 90.2MB. Free memory was 59.6MB in the beginning and 57.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.59ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 56.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.83ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 69.0MB in the end (delta: -12.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3690.05ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 68.6MB in the beginning and 59.0MB in the end (delta: 9.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 3.11ms. Allocated memory is still 109.1MB. Free memory was 59.0MB in the beginning and 58.3MB in the end (delta: 773.0kB). 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 [2023-09-01 01:13:24,701 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