./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_15-funarg_nr.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_15-funarg_nr.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 df8b3c6576309918ab02364f32df18a2107bf04dd579248cd48dca03e33a8ed2 --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 21:14:01,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:14:01,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:14:01,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:14:01,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:14:01,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:14:01,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:14:01,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:14:01,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:14:01,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:14:01,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:14:01,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:14:01,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:14:01,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:14:01,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:14:01,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:14:01,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:14:01,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:14:01,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:14:01,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:14:01,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:14:01,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:14:01,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:14:01,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:14:01,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:14:01,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:14:01,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:14:01,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:14:01,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:14:01,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:14:01,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:14:01,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:14:01,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:14:01,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:14:01,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:14:01,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:14:01,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:14:01,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:14:01,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:14:01,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:14:01,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:14:01,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:14:01,779 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:14:01,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:14:01,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:14:01,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:14:01,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:14:01,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:14:01,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:14:01,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:14:01,782 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:14:01,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:14:01,783 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:14:01,784 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:14:01,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:14:01,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:14:01,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:14:01,785 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:14:01,785 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:14:01,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:14:01,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:14:01,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:14:01,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:14:01,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:14:01,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:14:01,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:14:01,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:14:01,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:14:01,787 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:14:01,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:14:01,788 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:14:01,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df8b3c6576309918ab02364f32df18a2107bf04dd579248cd48dca03e33a8ed2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:14:02,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:14:02,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:14:02,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:14:02,099 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:14:02,099 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:14:02,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_15-funarg_nr.i [2023-08-29 21:14:03,311 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:14:03,628 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:14:03,628 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_15-funarg_nr.i [2023-08-29 21:14:03,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db06c4a5f/915ea48f993f4a0a9828b4e041e77564/FLAGf1d8b665c [2023-08-29 21:14:03,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db06c4a5f/915ea48f993f4a0a9828b4e041e77564 [2023-08-29 21:14:03,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:14:03,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:14:03,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:14:03,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:14:03,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:14:03,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:14:03" (1/1) ... [2023-08-29 21:14:03,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9e26bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:03, skipping insertion in model container [2023-08-29 21:14:03,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:14:03" (1/1) ... [2023-08-29 21:14:03,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:14:03,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:14:04,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:14:04,154 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:14:04,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:14:04,277 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:14:04,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04 WrapperNode [2023-08-29 21:14:04,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:14:04,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:14:04,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:14:04,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:14:04,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,342 INFO L138 Inliner]: procedures = 263, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-08-29 21:14:04,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:14:04,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:14:04,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:14:04,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:14:04,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:14:04,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:14:04,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:14:04,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:14:04,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (1/1) ... [2023-08-29 21:14:04,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:14:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:14:04,421 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 21:14:04,437 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 21:14:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:14:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:14:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:14:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:14:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:14:04,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:14:04,469 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 21:14:04,581 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:14:04,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:14:04,751 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:14:04,758 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:14:04,758 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:14:04,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:04 BoogieIcfgContainer [2023-08-29 21:14:04,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:14:04,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:14:04,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:14:04,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:14:04,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:14:03" (1/3) ... [2023-08-29 21:14:04,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364425d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:14:04, skipping insertion in model container [2023-08-29 21:14:04,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:14:04" (2/3) ... [2023-08-29 21:14:04,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364425d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:14:04, skipping insertion in model container [2023-08-29 21:14:04,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:04" (3/3) ... [2023-08-29 21:14:04,783 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_15-funarg_nr.i [2023-08-29 21:14:04,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:14:04,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-29 21:14:04,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:14:04,864 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:14:04,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 160 flow [2023-08-29 21:14:04,933 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2023-08-29 21:14:04,933 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:14:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 0/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:14:04,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 160 flow [2023-08-29 21:14:04,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 148 flow [2023-08-29 21:14:04,942 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:14:04,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 71 transitions, 148 flow [2023-08-29 21:14:04,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 71 transitions, 148 flow [2023-08-29 21:14:04,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 148 flow [2023-08-29 21:14:04,978 INFO L130 PetriNetUnfolder]: 0/71 cut-off events. [2023-08-29 21:14:04,979 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:14:04,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 71 events. 0/71 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:14:04,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2023-08-29 21:14:07,072 INFO L134 LiptonReduction]: Checked pairs total: 654 [2023-08-29 21:14:07,072 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-29 21:14:07,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:14:07,090 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;@7775b770, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:14:07,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 21:14:07,091 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:14:07,091 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:07,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:07,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:14:07,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:14:07,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 256, now seen corresponding path program 1 times [2023-08-29 21:14:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:07,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779339129] [2023-08-29 21:14:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:07,216 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 21:14:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779339129] [2023-08-29 21:14:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779339129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:14:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948409071] [2023-08-29 21:14:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:14:07,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:14:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:14:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-29 21:14:07,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 21:14:07,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:07,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-29 21:14:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:07,280 INFO L130 PetriNetUnfolder]: 18/51 cut-off events. [2023-08-29 21:14:07,281 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:14:07,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 51 events. 18/51 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 114 event pairs, 18 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 92. Up to 50 conditions per place. [2023-08-29 21:14:07,283 INFO L137 encePairwiseOnDemand]: 139/141 looper letters, 13 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 21:14:07,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 60 flow [2023-08-29 21:14:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:14:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:14:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-08-29 21:14:07,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780141843971631 [2023-08-29 21:14:07,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-08-29 21:14:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-08-29 21:14:07,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:07,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-08-29 21:14:07,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 21:14:07,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 21:14:07,303 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 21:14:07,304 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 2 states and 163 transitions. [2023-08-29 21:14:07,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 60 flow [2023-08-29 21:14:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:07,308 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 30 flow [2023-08-29 21:14:07,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, 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=17, PETRI_TRANSITIONS=14} [2023-08-29 21:14:07,312 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-29 21:14:07,313 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 30 flow [2023-08-29 21:14:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 21:14:07,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:07,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:07,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:14:07,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:14:07,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1856514769, now seen corresponding path program 1 times [2023-08-29 21:14:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943853146] [2023-08-29 21:14:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:07,458 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 21:14:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943853146] [2023-08-29 21:14:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943853146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:07,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:07,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:07,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258842131] [2023-08-29 21:14:07,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:07,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-29 21:14:07,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 21:14:07,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:07,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-29 21:14:07,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:07,509 INFO L130 PetriNetUnfolder]: 15/44 cut-off events. [2023-08-29 21:14:07,509 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:07,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 44 events. 15/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 15 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 87. Up to 41 conditions per place. [2023-08-29 21:14:07,510 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 10 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-29 21:14:07,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 52 flow [2023-08-29 21:14:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-29 21:14:07,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2023-08-29 21:14:07,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-29 21:14:07,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-29 21:14:07,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:07,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-29 21:14:07,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 21:14:07,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,517 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 30 flow. Second operand 3 states and 214 transitions. [2023-08-29 21:14:07,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 52 flow [2023-08-29 21:14:07,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:14:07,518 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-08-29 21:14:07,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-29 21:14:07,518 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-29 21:14:07,519 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-08-29 21:14:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 21:14:07,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:07,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:07,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:14:07,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:14:07,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1856514768, now seen corresponding path program 1 times [2023-08-29 21:14:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798418774] [2023-08-29 21:14:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:07,606 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 21:14:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798418774] [2023-08-29 21:14:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798418774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369396291] [2023-08-29 21:14:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:07,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-29 21:14:07,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 21:14:07,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:07,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-29 21:14:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:07,648 INFO L130 PetriNetUnfolder]: 12/37 cut-off events. [2023-08-29 21:14:07,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:07,649 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 5. Compared 67 event pairs, 12 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 75. Up to 34 conditions per place. [2023-08-29 21:14:07,649 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 9 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-08-29 21:14:07,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 52 flow [2023-08-29 21:14:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-08-29 21:14:07,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-08-29 21:14:07,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-08-29 21:14:07,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-08-29 21:14:07,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:07,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-08-29 21:14:07,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 21:14:07,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,654 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 210 transitions. [2023-08-29 21:14:07,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 52 flow [2023-08-29 21:14:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:07,655 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-08-29 21:14:07,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-29 21:14:07,656 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-29 21:14:07,656 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-08-29 21:14:07,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 21:14:07,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:07,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:07,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:14:07,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:14:07,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2101659959, now seen corresponding path program 1 times [2023-08-29 21:14:07,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491710776] [2023-08-29 21:14:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:07,798 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 21:14:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491710776] [2023-08-29 21:14:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491710776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:14:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991895389] [2023-08-29 21:14:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:07,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-29 21:14:07,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 21:14:07,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:07,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-29 21:14:07,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:07,858 INFO L130 PetriNetUnfolder]: 2/23 cut-off events. [2023-08-29 21:14:07,858 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 2 based on Foata normal form. 7/30 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2023-08-29 21:14:07,859 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 6 selfloop transitions, 6 changer transitions 0/12 dead transitions. [2023-08-29 21:14:07,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 54 flow [2023-08-29 21:14:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-29 21:14:07,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-29 21:14:07,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-29 21:14:07,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-29 21:14:07,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:07,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-29 21:14:07,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 21:14:07,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:07,868 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 3 states and 216 transitions. [2023-08-29 21:14:07,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 54 flow [2023-08-29 21:14:07,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:14:07,874 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 38 flow [2023-08-29 21:14:07,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-29 21:14:07,876 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-29 21:14:07,876 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 38 flow [2023-08-29 21:14:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 21:14:07,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:14:07,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:14:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:14:07,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:14:07,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:14:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash -916999283, now seen corresponding path program 2 times [2023-08-29 21:14:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:14:07,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419388431] [2023-08-29 21:14:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:14:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:14:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:14:07,992 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 21:14:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:14:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419388431] [2023-08-29 21:14:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419388431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:14:07,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:14:07,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:14:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330591663] [2023-08-29 21:14:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:14:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:14:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:14:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:14:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:14:08,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-29 21:14:08,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:14:08,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:14:08,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-29 21:14:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:14:08,034 INFO L130 PetriNetUnfolder]: 2/22 cut-off events. [2023-08-29 21:14:08,034 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:14:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 22 events. 2/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 2 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 57. Up to 20 conditions per place. [2023-08-29 21:14:08,035 INFO L137 encePairwiseOnDemand]: 139/141 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-29 21:14:08,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 56 flow [2023-08-29 21:14:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:14:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:14:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-08-29 21:14:08,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2023-08-29 21:14:08,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-08-29 21:14:08,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-08-29 21:14:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:14:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-08-29 21:14:08,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:14:08,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:08,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 21:14:08,039 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 38 flow. Second operand 3 states and 221 transitions. [2023-08-29 21:14:08,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 56 flow [2023-08-29 21:14:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:14:08,040 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-29 21:14:08,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-29 21:14:08,041 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-29 21:14:08,041 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-29 21:14:08,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:14:08,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-29 21:14:08,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-29 21:14:08,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-29 21:14:08,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-29 21:14:08,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-29 21:14:08,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-29 21:14:08,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:14:08,046 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-29 21:14:08,049 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:14:08,049 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:14:08,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:14:08 BasicIcfg [2023-08-29 21:14:08,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:14:08,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:14:08,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:14:08,053 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:14:08,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:14:04" (3/4) ... [2023-08-29 21:14:08,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:14:08,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:14:08,065 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-29 21:14:08,065 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 21:14:08,065 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:14:08,095 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:14:08,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:14:08,095 INFO L158 Benchmark]: Toolchain (without parser) took 4438.80ms. Allocated memory was 69.2MB in the beginning and 119.5MB in the end (delta: 50.3MB). Free memory was 44.7MB in the beginning and 67.5MB in the end (delta: -22.8MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,096 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:14:08,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.42ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 44.5MB in the beginning and 64.7MB in the end (delta: -20.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.54ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,097 INFO L158 Benchmark]: Boogie Preprocessor took 43.57ms. Allocated memory is still 98.6MB. Free memory was 62.3MB in the beginning and 60.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,097 INFO L158 Benchmark]: RCFGBuilder took 373.56ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 71.5MB in the end (delta: -10.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,097 INFO L158 Benchmark]: TraceAbstraction took 3289.90ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 71.1MB in the beginning and 70.6MB in the end (delta: 436.2kB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,098 INFO L158 Benchmark]: Witness Printer took 41.94ms. Allocated memory is still 119.5MB. Free memory was 70.6MB in the beginning and 67.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:14:08,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.42ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 44.5MB in the beginning and 64.7MB in the end (delta: -20.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.54ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.57ms. Allocated memory is still 98.6MB. Free memory was 62.3MB in the beginning and 60.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.56ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 71.5MB in the end (delta: -10.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3289.90ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 71.1MB in the beginning and 70.6MB in the end (delta: 436.2kB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Witness Printer took 41.94ms. Allocated memory is still 119.5MB. Free memory was 70.6MB in the beginning and 67.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 75 PlacesBefore, 20 PlacesAfterwards, 71 TransitionsBefore, 16 TransitionsAfterwards, 280 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 654 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 348, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 160, independent: 143, independent conditional: 0, independent unconditional: 143, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 348, independent: 109, independent conditional: 0, independent unconditional: 109, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 160, unknown conditional: 0, unknown unconditional: 160] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 930]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 86 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 33 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:14:08,121 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