./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.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 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:14:27,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:14:27,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:14:27,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:14:27,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:14:27,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:14:27,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:14:27,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:14:27,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:14:27,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:14:27,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:14:27,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:14:27,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:14:27,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:14:27,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:14:27,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:14:27,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:14:27,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:14:27,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:14:27,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:14:27,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:14:27,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:14:27,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:14:27,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:14:27,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:14:27,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:14:27,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:14:27,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:14:27,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:14:27,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:14:27,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:14:27,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:14:27,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:14:27,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:14:27,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:14:27,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:14:27,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:14:27,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:14:27,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:14:27,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:14:27,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:14:27,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:14:27,781 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:14:27,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:14:27,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:14:27,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:14:27,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:14:27,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:14:27,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:14:27,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:14:27,784 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:14:27,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:14:27,785 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:14:27,786 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:14:27,787 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:14:27,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:14:27,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:14:27,787 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:14:27,787 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:14:27,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:14:27,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:14:27,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:14:27,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:14:27,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:14:27,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:14:27,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:14:27,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:14:27,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:14:27,789 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:14:27,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:14:27,790 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:14:27,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:14:28,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:14:28,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:14:28,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:14:28,075 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:14:28,076 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:14:28,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i [2023-08-29 21:14:29,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:14:29,542 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:14:29,543 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i [2023-08-29 21:14:29,555 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7dc3290/17820426037f43d49615feb94e96bdda/FLAGd39f26ad9 [2023-08-29 21:14:29,569 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7dc3290/17820426037f43d49615feb94e96bdda [2023-08-29 21:14:29,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:14:29,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:14:29,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:14:29,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:14:29,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:14:29,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:29,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36efdba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29, skipping insertion in model container [2023-08-29 21:14:29,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:29,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:14:29,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:14:29,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:14:29,845 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:14:29,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:14:29,942 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:14:29,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29 WrapperNode [2023-08-29 21:14:29,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:14:29,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:14:29,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:14:29,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:14:29,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:29,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:29,996 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-08-29 21:14:29,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:14:29,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:14:29,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:14:29,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:14:30,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:14:30,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:14:30,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:14:30,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:14:30,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (1/1) ... [2023-08-29 21:14:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:14:30,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:14:30,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:14:30,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:14:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:14:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:14:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:14:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:14:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:14:30,110 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:14:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:14:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:14:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:14:30,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:14:30,114 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:14:30,269 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:14:30,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:14:30,408 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:14:30,413 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:14:30,414 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:14:30,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:30 BoogieIcfgContainer [2023-08-29 21:14:30,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:14:30,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:14:30,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:14:30,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:14:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:14:29" (1/3) ... [2023-08-29 21:14:30,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548533ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:14:30, skipping insertion in model container [2023-08-29 21:14:30,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:29" (2/3) ... [2023-08-29 21:14:30,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548533ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:14:30, skipping insertion in model container [2023-08-29 21:14:30,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:30" (3/3) ... [2023-08-29 21:14:30,424 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2023-08-29 21:14:30,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:14:30,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-29 21:14:30,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:14:30,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:14:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 109 flow [2023-08-29 21:14:30,579 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2023-08-29 21:14:30,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:14:30,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 109 flow [2023-08-29 21:14:30,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2023-08-29 21:14:30,593 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:14:30,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-29 21:14:30,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-29 21:14:30,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2023-08-29 21:14:30,621 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2023-08-29 21:14:30,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:30,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:14:30,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 306 [2023-08-29 21:14:32,573 INFO L134 LiptonReduction]: Checked pairs total: 700 [2023-08-29 21:14:32,573 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-29 21:14:32,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:14:32,590 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;@3a1eb156, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:14:32,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 21:14:32,592 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:14:32,592 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:32,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:32,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:14:32,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:32,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 195, now seen corresponding path program 1 times [2023-08-29 21:14:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910542571] [2023-08-29 21:14:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:32,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910542571] [2023-08-29 21:14:32,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910542571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:32,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:14:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044816886] [2023-08-29 21:14:32,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:32,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:14:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:14:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:14:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 104 [2023-08-29 21:14:32,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 35 flow. Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:32,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:32,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 104 [2023-08-29 21:14:32,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:32,767 INFO L130 PetriNetUnfolder]: 30/76 cut-off events. [2023-08-29 21:14:32,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:32,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 76 events. 30/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 260 event pairs, 30 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 145. Up to 74 conditions per place. [2023-08-29 21:14:32,770 INFO L137 encePairwiseOnDemand]: 102/104 looper letters, 13 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 21:14:32,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 57 flow [2023-08-29 21:14:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:14:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:14:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 117 transitions. [2023-08-29 21:14:32,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-29 21:14:32,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 117 transitions. [2023-08-29 21:14:32,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 117 transitions. [2023-08-29 21:14:32,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:32,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 117 transitions. [2023-08-29 21:14:32,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:32,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:32,789 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:32,791 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 35 flow. Second operand 2 states and 117 transitions. [2023-08-29 21:14:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 57 flow [2023-08-29 21:14:32,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:14:32,794 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 30 flow [2023-08-29 21:14:32,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2023-08-29 21:14:32,799 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-29 21:14:32,799 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 30 flow [2023-08-29 21:14:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:32,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:32,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:14:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:14:32,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:32,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash 192995, now seen corresponding path program 1 times [2023-08-29 21:14:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654703292] [2023-08-29 21:14:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654703292] [2023-08-29 21:14:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654703292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612978854] [2023-08-29 21:14:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:33,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 104 [2023-08-29 21:14:33,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:33,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 104 [2023-08-29 21:14:33,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:33,057 INFO L130 PetriNetUnfolder]: 20/53 cut-off events. [2023-08-29 21:14:33,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:33,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 53 events. 20/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 20 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 106. Up to 51 conditions per place. [2023-08-29 21:14:33,059 INFO L137 encePairwiseOnDemand]: 101/104 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-29 21:14:33,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 48 flow [2023-08-29 21:14:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-08-29 21:14:33,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-29 21:14:33,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-08-29 21:14:33,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-08-29 21:14:33,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:33,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-08-29 21:14:33,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,064 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 30 flow. Second operand 3 states and 160 transitions. [2023-08-29 21:14:33,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 48 flow [2023-08-29 21:14:33,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:14:33,065 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-29 21:14:33,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-29 21:14:33,065 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-29 21:14:33,066 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-29 21:14:33,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:33,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:14:33,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:14:33,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:33,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash 193013, now seen corresponding path program 1 times [2023-08-29 21:14:33,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315225065] [2023-08-29 21:14:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315225065] [2023-08-29 21:14:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315225065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:33,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:33,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:33,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350262365] [2023-08-29 21:14:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:33,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:33,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2023-08-29 21:14:33,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:33,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2023-08-29 21:14:33,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:33,212 INFO L130 PetriNetUnfolder]: 12/37 cut-off events. [2023-08-29 21:14:33,212 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:33,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 37 events. 12/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 6 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 75. Up to 19 conditions per place. [2023-08-29 21:14:33,213 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 10 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2023-08-29 21:14:33,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 58 flow [2023-08-29 21:14:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2023-08-29 21:14:33,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2023-08-29 21:14:33,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 159 transitions. [2023-08-29 21:14:33,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 159 transitions. [2023-08-29 21:14:33,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:33,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 159 transitions. [2023-08-29 21:14:33,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,218 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 159 transitions. [2023-08-29 21:14:33,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 58 flow [2023-08-29 21:14:33,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:14:33,218 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 36 flow [2023-08-29 21:14:33,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-29 21:14:33,219 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-08-29 21:14:33,220 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 36 flow [2023-08-29 21:14:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:33,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:14:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:14:33,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:33,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1454872483, now seen corresponding path program 1 times [2023-08-29 21:14:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476473305] [2023-08-29 21:14:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:33,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476473305] [2023-08-29 21:14:33,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476473305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:33,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:33,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:33,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000069581] [2023-08-29 21:14:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:33,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 104 [2023-08-29 21:14:33,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:33,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 104 [2023-08-29 21:14:33,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:33,329 INFO L130 PetriNetUnfolder]: 9/29 cut-off events. [2023-08-29 21:14:33,329 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:14:33,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 29 events. 9/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 6 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2023-08-29 21:14:33,330 INFO L137 encePairwiseOnDemand]: 101/104 looper letters, 6 selfloop transitions, 2 changer transitions 4/13 dead transitions. [2023-08-29 21:14:33,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 61 flow [2023-08-29 21:14:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-08-29 21:14:33,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2023-08-29 21:14:33,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-08-29 21:14:33,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-08-29 21:14:33,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:33,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-08-29 21:14:33,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,340 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 36 flow. Second operand 3 states and 154 transitions. [2023-08-29 21:14:33,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 61 flow [2023-08-29 21:14:33,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:33,344 INFO L231 Difference]: Finished difference. Result has 18 places, 8 transitions, 27 flow [2023-08-29 21:14:33,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=18, PETRI_TRANSITIONS=8} [2023-08-29 21:14:33,345 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-29 21:14:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 8 transitions, 27 flow [2023-08-29 21:14:33,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:33,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:14:33,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:33,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1554186156, now seen corresponding path program 1 times [2023-08-29 21:14:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558561635] [2023-08-29 21:14:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558561635] [2023-08-29 21:14:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558561635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:33,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:14:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305461372] [2023-08-29 21:14:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:33,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2023-08-29 21:14:33,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 8 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:33,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2023-08-29 21:14:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:33,471 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-08-29 21:14:33,471 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:14:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 11 events. 1/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 30. Up to 6 conditions per place. [2023-08-29 21:14:33,472 INFO L137 encePairwiseOnDemand]: 101/104 looper letters, 5 selfloop transitions, 3 changer transitions 0/9 dead transitions. [2023-08-29 21:14:33,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 48 flow [2023-08-29 21:14:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-08-29 21:14:33,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-08-29 21:14:33,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-08-29 21:14:33,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-08-29 21:14:33,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:33,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-08-29 21:14:33,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,475 INFO L175 Difference]: Start difference. First operand has 18 places, 8 transitions, 27 flow. Second operand 3 states and 148 transitions. [2023-08-29 21:14:33,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 48 flow [2023-08-29 21:14:33,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:33,476 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 29 flow [2023-08-29 21:14:33,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-08-29 21:14:33,479 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -4 predicate places. [2023-08-29 21:14:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 29 flow [2023-08-29 21:14:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:33,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:14:33,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:14:33,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2026861990, now seen corresponding path program 2 times [2023-08-29 21:14:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564397783] [2023-08-29 21:14:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:14:33,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:33,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564397783] [2023-08-29 21:14:33,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564397783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:33,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:33,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:14:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535930597] [2023-08-29 21:14:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:33,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:14:33,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:14:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:14:33,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2023-08-29 21:14:33,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 8 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:33,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2023-08-29 21:14:33,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:33,637 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-29 21:14:33,638 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:14:33,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 10 events. 1/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 1 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 29. Up to 9 conditions per place. [2023-08-29 21:14:33,638 INFO L137 encePairwiseOnDemand]: 102/104 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-29 21:14:33,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 7 transitions, 37 flow [2023-08-29 21:14:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2023-08-29 21:14:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-08-29 21:14:33,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2023-08-29 21:14:33,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2023-08-29 21:14:33,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:33,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2023-08-29 21:14:33,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,641 INFO L175 Difference]: Start difference. First operand has 16 places, 8 transitions, 29 flow. Second operand 3 states and 136 transitions. [2023-08-29 21:14:33,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 7 transitions, 37 flow [2023-08-29 21:14:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 32 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:33,642 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-29 21:14:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-29 21:14:33,643 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -5 predicate places. [2023-08-29 21:14:33,643 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-29 21:14:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:14:33,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-29 21:14:33,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-08-29 21:14:33,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2023-08-29 21:14:33,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-08-29 21:14:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:14:33,647 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-29 21:14:33,651 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:14:33,651 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:14:33,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:14:33 BasicIcfg [2023-08-29 21:14:33,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:14:33,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:14:33,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:14:33,655 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:14:33,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:30" (3/4) ... [2023-08-29 21:14:33,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:14:33,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:14:33,665 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-29 21:14:33,665 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:14:33,665 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:14:33,694 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:14:33,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:14:33,694 INFO L158 Benchmark]: Toolchain (without parser) took 4120.45ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 45.7MB in the beginning and 46.0MB in the end (delta: -352.5kB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,695 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 34.9MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:14:33,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.22ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 1.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.97ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 41.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,695 INFO L158 Benchmark]: Boogie Preprocessor took 32.44ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 40.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:14:33,696 INFO L158 Benchmark]: RCFGBuilder took 385.18ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 40.3MB in the beginning and 60.8MB in the end (delta: -20.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,696 INFO L158 Benchmark]: TraceAbstraction took 3237.12ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.1MB in the beginning and 48.6MB in the end (delta: 11.5MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,696 INFO L158 Benchmark]: Witness Printer took 38.95ms. Allocated memory is still 100.7MB. Free memory was 48.6MB in the beginning and 46.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:33,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 34.9MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.22ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 1.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.97ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 41.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.44ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 40.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.18ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 40.3MB in the beginning and 60.8MB in the end (delta: -20.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3237.12ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.1MB in the beginning and 48.6MB in the end (delta: 11.5MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 38.95ms. Allocated memory is still 100.7MB. Free memory was 48.6MB in the beginning and 46.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 55 PlacesBefore, 20 PlacesAfterwards, 51 TransitionsBefore, 16 TransitionsAfterwards, 306 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 700 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 377, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 180, independent: 159, independent conditional: 0, independent unconditional: 159, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 377, independent: 147, independent conditional: 0, independent unconditional: 147, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 180, unknown conditional: 0, unknown unconditional: 180] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 64 locations, 10 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 56 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 0.5s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:14:33,714 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: TRUE