./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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 ../sv-benchmarks/c/memsafety/lockfree-3.2.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 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 08:14:30,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 08:14:30,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 08:14:30,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 08:14:30,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 08:14:30,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 08:14:30,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 08:14:30,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 08:14:30,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 08:14:30,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 08:14:30,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 08:14:30,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 08:14:30,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 08:14:30,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 08:14:30,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 08:14:30,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 08:14:30,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 08:14:30,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 08:14:30,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 08:14:30,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 08:14:30,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 08:14:30,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 08:14:30,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 08:14:30,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 08:14:30,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 08:14:30,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 08:14:30,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 08:14:30,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 08:14:30,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 08:14:30,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 08:14:30,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 08:14:30,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 08:14:30,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 08:14:30,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 08:14:30,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 08:14:30,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 08:14:30,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 08:14:30,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 08:14:30,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 08:14:30,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 08:14:30,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 08:14:30,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 08:14:30,762 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 08:14:30,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 08:14:30,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 08:14:30,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 08:14:30,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 08:14:30,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 08:14:30,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 08:14:30,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 08:14:30,770 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 08:14:30,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 08:14:30,770 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 08:14:30,771 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 08:14:30,772 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 08:14:30,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 08:14:30,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 08:14:30,772 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 08:14:30,772 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 08:14:30,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 08:14:30,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 08:14:30,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 08:14:30,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:14:30,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 08:14:30,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 08:14:30,774 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 08:14:30,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2023-02-17 08:14:30,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 08:14:30,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 08:14:30,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 08:14:30,986 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 08:14:30,986 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 08:14:30,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-02-17 08:14:32,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 08:14:32,249 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 08:14:32,249 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-02-17 08:14:32,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dcaa0ce5/776bc36473b5482cb403dca13e665e5d/FLAG18d16f7ee [2023-02-17 08:14:32,271 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dcaa0ce5/776bc36473b5482cb403dca13e665e5d [2023-02-17 08:14:32,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 08:14:32,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 08:14:32,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 08:14:32,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 08:14:32,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 08:14:32,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20528d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32, skipping insertion in model container [2023-02-17 08:14:32,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 08:14:32,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:14:32,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:14:32,482 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 08:14:32,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:14:32,529 INFO L208 MainTranslator]: Completed translation [2023-02-17 08:14:32,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32 WrapperNode [2023-02-17 08:14:32,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 08:14:32,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 08:14:32,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 08:14:32,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 08:14:32,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,560 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2023-02-17 08:14:32,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 08:14:32,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 08:14:32,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 08:14:32,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 08:14:32,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 08:14:32,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 08:14:32,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 08:14:32,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 08:14:32,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (1/1) ... [2023-02-17 08:14:32,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:14:32,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:14:32,602 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) [2023-02-17 08:14:32,617 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 [2023-02-17 08:14:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 08:14:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 08:14:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 08:14:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 08:14:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 08:14:32,725 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 08:14:32,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 08:14:32,913 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 08:14:32,917 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 08:14:32,917 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 08:14:32,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:32 BoogieIcfgContainer [2023-02-17 08:14:32,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 08:14:32,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 08:14:32,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 08:14:32,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 08:14:32,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:14:32" (1/3) ... [2023-02-17 08:14:32,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703144c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:14:32, skipping insertion in model container [2023-02-17 08:14:32,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:32" (2/3) ... [2023-02-17 08:14:32,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703144c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:14:32, skipping insertion in model container [2023-02-17 08:14:32,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:32" (3/3) ... [2023-02-17 08:14:32,924 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2023-02-17 08:14:32,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 08:14:32,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-02-17 08:14:33,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 08:14:33,054 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;@4c032112, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 08:14:33,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-02-17 08:14:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 08:14:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 08:14:33,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 08:14:33,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2023-02-17 08:14:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751863594] [2023-02-17 08:14:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751863594] [2023-02-17 08:14:33,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751863594] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624969912] [2023-02-17 08:14:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 08:14:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 08:14:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 08:14:33,234 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 08:14:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,261 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-02-17 08:14:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 08:14:33,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-02-17 08:14:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,273 INFO L225 Difference]: With dead ends: 64 [2023-02-17 08:14:33,273 INFO L226 Difference]: Without dead ends: 62 [2023-02-17 08:14:33,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 08:14:33,279 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-17 08:14:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-17 08:14:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 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) [2023-02-17 08:14:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-02-17 08:14:33,307 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2023-02-17 08:14:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,307 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-02-17 08:14:33,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 08:14:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-02-17 08:14:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 08:14:33,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 08:14:33,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2023-02-17 08:14:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404725140] [2023-02-17 08:14:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404725140] [2023-02-17 08:14:33,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404725140] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:14:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983073117] [2023-02-17 08:14:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,346 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 08:14:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,358 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2023-02-17 08:14:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:33,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2023-02-17 08:14:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,360 INFO L225 Difference]: With dead ends: 63 [2023-02-17 08:14:33,360 INFO L226 Difference]: Without dead ends: 63 [2023-02-17 08:14:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,361 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-17 08:14:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-17 08:14:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 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) [2023-02-17 08:14:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2023-02-17 08:14:33,366 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2023-02-17 08:14:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,367 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2023-02-17 08:14:33,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 08:14:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2023-02-17 08:14:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 08:14:33,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 08:14:33,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2023-02-17 08:14:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947415271] [2023-02-17 08:14:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947415271] [2023-02-17 08:14:33,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947415271] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074877510] [2023-02-17 08:14:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,438 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-17 08:14:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,478 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2023-02-17 08:14:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2023-02-17 08:14:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,480 INFO L225 Difference]: With dead ends: 111 [2023-02-17 08:14:33,480 INFO L226 Difference]: Without dead ends: 111 [2023-02-17 08:14:33,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,482 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-17 08:14:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2023-02-17 08:14:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 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) [2023-02-17 08:14:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2023-02-17 08:14:33,490 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2023-02-17 08:14:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,490 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2023-02-17 08:14:33,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-17 08:14:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2023-02-17 08:14:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 08:14:33,491 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 08:14:33,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2023-02-17 08:14:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817293419] [2023-02-17 08:14:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817293419] [2023-02-17 08:14:33,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817293419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:14:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421489943] [2023-02-17 08:14:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 08:14:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 08:14:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 08:14:33,598 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,651 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2023-02-17 08:14:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 08:14:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-02-17 08:14:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,653 INFO L225 Difference]: With dead ends: 122 [2023-02-17 08:14:33,655 INFO L226 Difference]: Without dead ends: 122 [2023-02-17 08:14:33,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:14:33,657 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 34 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 208 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-17 08:14:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2023-02-17 08:14:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.9) internal successors, (171), 109 states have internal predecessors, (171), 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) [2023-02-17 08:14:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions. [2023-02-17 08:14:33,678 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 8 [2023-02-17 08:14:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,678 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 171 transitions. [2023-02-17 08:14:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions. [2023-02-17 08:14:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 08:14:33,679 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 08:14:33,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2023-02-17 08:14:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942090571] [2023-02-17 08:14:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942090571] [2023-02-17 08:14:33,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942090571] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:33,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920954231] [2023-02-17 08:14:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,724 INFO L87 Difference]: Start difference. First operand 110 states and 171 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,775 INFO L93 Difference]: Finished difference Result 207 states and 321 transitions. [2023-02-17 08:14:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:33,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-02-17 08:14:33,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,778 INFO L225 Difference]: With dead ends: 207 [2023-02-17 08:14:33,778 INFO L226 Difference]: Without dead ends: 204 [2023-02-17 08:14:33,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,781 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-17 08:14:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 183. [2023-02-17 08:14:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.8711656441717792) internal successors, (305), 182 states have internal predecessors, (305), 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) [2023-02-17 08:14:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 305 transitions. [2023-02-17 08:14:33,793 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 305 transitions. Word has length 8 [2023-02-17 08:14:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,794 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 305 transitions. [2023-02-17 08:14:33,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 305 transitions. [2023-02-17 08:14:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 08:14:33,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 08:14:33,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2023-02-17 08:14:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595585506] [2023-02-17 08:14:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595585506] [2023-02-17 08:14:33,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595585506] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398578999] [2023-02-17 08:14:33,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,839 INFO L87 Difference]: Start difference. First operand 183 states and 305 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,881 INFO L93 Difference]: Finished difference Result 274 states and 434 transitions. [2023-02-17 08:14:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-02-17 08:14:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,882 INFO L225 Difference]: With dead ends: 274 [2023-02-17 08:14:33,882 INFO L226 Difference]: Without dead ends: 274 [2023-02-17 08:14:33,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,883 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-17 08:14:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 253. [2023-02-17 08:14:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 235 states have (on average 1.7872340425531914) internal successors, (420), 252 states have internal predecessors, (420), 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) [2023-02-17 08:14:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 420 transitions. [2023-02-17 08:14:33,890 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 420 transitions. Word has length 8 [2023-02-17 08:14:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 420 transitions. [2023-02-17 08:14:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 420 transitions. [2023-02-17 08:14:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 08:14:33,891 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 08:14:33,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2023-02-17 08:14:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769079952] [2023-02-17 08:14:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:33,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769079952] [2023-02-17 08:14:33,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769079952] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:33,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:33,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:33,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240828604] [2023-02-17 08:14:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:33,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,932 INFO L87 Difference]: Start difference. First operand 253 states and 420 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:33,965 INFO L93 Difference]: Finished difference Result 269 states and 421 transitions. [2023-02-17 08:14:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-02-17 08:14:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:33,966 INFO L225 Difference]: With dead ends: 269 [2023-02-17 08:14:33,966 INFO L226 Difference]: Without dead ends: 269 [2023-02-17 08:14:33,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:33,969 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:33,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-02-17 08:14:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2023-02-17 08:14:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 235 states have (on average 1.7361702127659575) internal successors, (408), 250 states have internal predecessors, (408), 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) [2023-02-17 08:14:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 408 transitions. [2023-02-17 08:14:33,996 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 408 transitions. Word has length 8 [2023-02-17 08:14:33,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:33,997 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 408 transitions. [2023-02-17 08:14:33,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 408 transitions. [2023-02-17 08:14:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 08:14:33,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:33,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:33,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 08:14:33,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2023-02-17 08:14:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145109978] [2023-02-17 08:14:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:34,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:34,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145109978] [2023-02-17 08:14:34,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145109978] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:34,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:34,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:14:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403062207] [2023-02-17 08:14:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:34,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:14:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:14:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:14:34,029 INFO L87 Difference]: Start difference. First operand 251 states and 408 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 08:14:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:34,058 INFO L93 Difference]: Finished difference Result 533 states and 803 transitions. [2023-02-17 08:14:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 08:14:34,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2023-02-17 08:14:34,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:34,060 INFO L225 Difference]: With dead ends: 533 [2023-02-17 08:14:34,060 INFO L226 Difference]: Without dead ends: 533 [2023-02-17 08:14:34,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:14:34,061 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 105 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:34,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 364 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-02-17 08:14:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 432. [2023-02-17 08:14:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 416 states have (on average 1.6442307692307692) internal successors, (684), 431 states have internal predecessors, (684), 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) [2023-02-17 08:14:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 684 transitions. [2023-02-17 08:14:34,068 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 684 transitions. Word has length 9 [2023-02-17 08:14:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 684 transitions. [2023-02-17 08:14:34,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 08:14:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 684 transitions. [2023-02-17 08:14:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 08:14:34,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:34,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 08:14:34,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2023-02-17 08:14:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:34,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848645147] [2023-02-17 08:14:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:14:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848645147] [2023-02-17 08:14:34,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848645147] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:34,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:34,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:14:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565999947] [2023-02-17 08:14:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:34,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:14:34,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:14:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:14:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:14:34,109 INFO L87 Difference]: Start difference. First operand 432 states and 684 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-17 08:14:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:34,138 INFO L93 Difference]: Finished difference Result 904 states and 1344 transitions. [2023-02-17 08:14:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 08:14:34,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2023-02-17 08:14:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:34,141 INFO L225 Difference]: With dead ends: 904 [2023-02-17 08:14:34,141 INFO L226 Difference]: Without dead ends: 904 [2023-02-17 08:14:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:14:34,142 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 93 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:34,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 354 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-02-17 08:14:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 672. [2023-02-17 08:14:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 656 states have (on average 1.5670731707317074) internal successors, (1028), 671 states have internal predecessors, (1028), 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) [2023-02-17 08:14:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1028 transitions. [2023-02-17 08:14:34,154 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1028 transitions. Word has length 10 [2023-02-17 08:14:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:34,154 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1028 transitions. [2023-02-17 08:14:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-17 08:14:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1028 transitions. [2023-02-17 08:14:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 08:14:34,156 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:34,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:34,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 08:14:34,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2023-02-17 08:14:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:14:34,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347194984] [2023-02-17 08:14:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:34,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:14:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 08:14:34,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 08:14:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 08:14:34,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 08:14:34,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 08:14:34,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-02-17 08:14:34,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-02-17 08:14:34,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-02-17 08:14:34,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-02-17 08:14:34,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-02-17 08:14:34,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-02-17 08:14:34,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-02-17 08:14:34,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-02-17 08:14:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-02-17 08:14:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 08:14:34,211 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:34,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 08:14:34,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 08:14:34 BoogieIcfgContainer [2023-02-17 08:14:34,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 08:14:34,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 08:14:34,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 08:14:34,251 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 08:14:34,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:32" (3/4) ... [2023-02-17 08:14:34,254 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 08:14:34,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 08:14:34,254 INFO L158 Benchmark]: Toolchain (without parser) took 1980.85ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 99.7MB in the beginning and 120.3MB in the end (delta: -20.6MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,254 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory was 116.4MB in the beginning and 116.4MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:14:34,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.31ms. Allocated memory is still 148.9MB. Free memory was 99.3MB in the beginning and 82.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.48ms. Allocated memory is still 148.9MB. Free memory was 82.3MB in the beginning and 80.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,255 INFO L158 Benchmark]: Boogie Preprocessor took 18.72ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,255 INFO L158 Benchmark]: RCFGBuilder took 338.78ms. Allocated memory is still 148.9MB. Free memory was 78.4MB in the beginning and 61.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,255 INFO L158 Benchmark]: TraceAbstraction took 1330.61ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 60.9MB in the beginning and 121.4MB in the end (delta: -60.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:14:34,256 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 197.1MB. Free memory was 121.4MB in the beginning and 120.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 08:14:34,257 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 148.9MB. Free memory was 116.4MB in the beginning and 116.4MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.31ms. Allocated memory is still 148.9MB. Free memory was 99.3MB in the beginning and 82.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.48ms. Allocated memory is still 148.9MB. Free memory was 82.3MB in the beginning and 80.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.72ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.78ms. Allocated memory is still 148.9MB. Free memory was 78.4MB in the beginning and 61.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1330.61ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 60.9MB in the beginning and 121.4MB in the end (delta: -60.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 197.1MB. Free memory was 121.4MB in the beginning and 120.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 490 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 490 mSDsluCounter, 1768 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 919 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 227 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 849 mSDtfsCounter, 227 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=672occurred in iteration=9, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 423 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-17 08:14:34,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 08:14:36,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 08:14:36,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 08:14:36,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 08:14:36,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 08:14:36,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 08:14:36,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 08:14:36,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 08:14:36,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 08:14:36,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 08:14:36,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 08:14:36,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 08:14:36,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 08:14:36,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 08:14:36,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 08:14:36,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 08:14:36,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 08:14:36,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 08:14:36,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 08:14:36,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 08:14:36,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 08:14:36,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 08:14:36,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 08:14:36,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 08:14:36,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 08:14:36,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 08:14:36,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 08:14:36,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 08:14:36,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 08:14:36,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 08:14:36,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 08:14:36,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 08:14:36,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 08:14:36,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 08:14:36,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 08:14:36,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 08:14:36,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 08:14:36,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 08:14:36,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 08:14:36,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 08:14:36,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 08:14:36,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-17 08:14:36,150 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 08:14:36,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 08:14:36,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 08:14:36,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 08:14:36,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 08:14:36,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 08:14:36,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 08:14:36,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 08:14:36,152 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 08:14:36,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 08:14:36,153 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 08:14:36,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 08:14:36,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 08:14:36,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 08:14:36,154 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 08:14:36,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 08:14:36,158 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 08:14:36,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 08:14:36,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 08:14:36,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 08:14:36,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 08:14:36,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:14:36,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 08:14:36,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 08:14:36,159 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 08:14:36,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 08:14:36,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 08:14:36,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 08:14:36,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 08:14:36,165 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 08:14:36,165 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 08:14:36,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2023-02-17 08:14:36,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 08:14:36,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 08:14:36,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 08:14:36,448 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 08:14:36,448 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 08:14:36,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-02-17 08:14:37,664 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 08:14:37,875 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 08:14:37,875 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-02-17 08:14:37,888 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeace096/da983c69e469482a9a55ac8e433fd402/FLAG8a4fa291f [2023-02-17 08:14:37,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeace096/da983c69e469482a9a55ac8e433fd402 [2023-02-17 08:14:37,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 08:14:37,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 08:14:37,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 08:14:37,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 08:14:37,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 08:14:37,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:14:37" (1/1) ... [2023-02-17 08:14:37,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e00613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:37, skipping insertion in model container [2023-02-17 08:14:37,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:14:37" (1/1) ... [2023-02-17 08:14:37,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 08:14:37,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:14:38,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:14:38,149 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 08:14:38,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:14:38,199 INFO L208 MainTranslator]: Completed translation [2023-02-17 08:14:38,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38 WrapperNode [2023-02-17 08:14:38,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 08:14:38,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 08:14:38,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 08:14:38,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 08:14:38,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,234 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2023-02-17 08:14:38,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 08:14:38,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 08:14:38,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 08:14:38,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 08:14:38,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 08:14:38,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 08:14:38,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 08:14:38,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 08:14:38,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (1/1) ... [2023-02-17 08:14:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:14:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:14:38,291 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) [2023-02-17 08:14:38,297 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 [2023-02-17 08:14:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-17 08:14:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 08:14:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 08:14:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 08:14:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 08:14:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 08:14:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-17 08:14:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 08:14:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 08:14:38,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 08:14:38,402 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 08:14:38,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 08:14:38,642 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 08:14:38,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 08:14:38,646 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 08:14:38,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:38 BoogieIcfgContainer [2023-02-17 08:14:38,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 08:14:38,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 08:14:38,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 08:14:38,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 08:14:38,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:14:37" (1/3) ... [2023-02-17 08:14:38,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14564327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:14:38, skipping insertion in model container [2023-02-17 08:14:38,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:14:38" (2/3) ... [2023-02-17 08:14:38,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14564327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:14:38, skipping insertion in model container [2023-02-17 08:14:38,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:38" (3/3) ... [2023-02-17 08:14:38,669 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2023-02-17 08:14:38,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 08:14:38,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-02-17 08:14:38,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 08:14:38,726 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;@315caac1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 08:14:38,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-02-17 08:14:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 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) [2023-02-17 08:14:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 08:14:38,734 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:38,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 08:14:38,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 28701640, now seen corresponding path program 1 times [2023-02-17 08:14:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424071198] [2023-02-17 08:14:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:38,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:38,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:38,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 08:14:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:38,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 08:14:38,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:38,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:38,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:38,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424071198] [2023-02-17 08:14:38,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424071198] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:38,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:38,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110067031] [2023-02-17 08:14:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:38,958 INFO L87 Difference]: Start difference. First operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 08:14:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:39,000 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2023-02-17 08:14:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:39,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-02-17 08:14:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:39,009 INFO L225 Difference]: With dead ends: 107 [2023-02-17 08:14:39,010 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 08:14:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:39,015 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:39,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 08:14:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2023-02-17 08:14:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 86 states have internal predecessors, (129), 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) [2023-02-17 08:14:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2023-02-17 08:14:39,039 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 5 [2023-02-17 08:14:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:39,040 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2023-02-17 08:14:39,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 08:14:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2023-02-17 08:14:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 08:14:39,040 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:39,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 08:14:39,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:39,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:39,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash 889749439, now seen corresponding path program 1 times [2023-02-17 08:14:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231157040] [2023-02-17 08:14:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:39,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:39,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 08:14:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:39,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 08:14:39,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:39,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:39,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231157040] [2023-02-17 08:14:39,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231157040] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:39,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:39,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033495543] [2023-02-17 08:14:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:39,295 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:39,368 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2023-02-17 08:14:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:39,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 08:14:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:39,370 INFO L225 Difference]: With dead ends: 163 [2023-02-17 08:14:39,370 INFO L226 Difference]: Without dead ends: 160 [2023-02-17 08:14:39,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:39,371 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 62 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:39,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 116 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:14:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-02-17 08:14:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 140. [2023-02-17 08:14:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.9083333333333334) internal successors, (229), 139 states have internal predecessors, (229), 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) [2023-02-17 08:14:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 229 transitions. [2023-02-17 08:14:39,395 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 229 transitions. Word has length 6 [2023-02-17 08:14:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:39,395 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 229 transitions. [2023-02-17 08:14:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 229 transitions. [2023-02-17 08:14:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 08:14:39,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:39,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 08:14:39,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:39,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:39,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 889692424, now seen corresponding path program 1 times [2023-02-17 08:14:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:39,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86601384] [2023-02-17 08:14:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:39,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:39,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:39,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:39,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 08:14:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 08:14:39,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:39,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 08:14:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:39,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:39,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:39,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86601384] [2023-02-17 08:14:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86601384] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:39,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:39,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635111022] [2023-02-17 08:14:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:39,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:39,720 INFO L87 Difference]: Start difference. First operand 140 states and 229 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:39,801 INFO L93 Difference]: Finished difference Result 211 states and 330 transitions. [2023-02-17 08:14:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 08:14:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:39,803 INFO L225 Difference]: With dead ends: 211 [2023-02-17 08:14:39,803 INFO L226 Difference]: Without dead ends: 211 [2023-02-17 08:14:39,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:39,804 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 64 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:39,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 163 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:14:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-02-17 08:14:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2023-02-17 08:14:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 172 states have (on average 1.8372093023255813) internal successors, (316), 189 states have internal predecessors, (316), 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) [2023-02-17 08:14:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 316 transitions. [2023-02-17 08:14:39,812 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 316 transitions. Word has length 6 [2023-02-17 08:14:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:39,812 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 316 transitions. [2023-02-17 08:14:39,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 316 transitions. [2023-02-17 08:14:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 08:14:39,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:39,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 08:14:39,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash 889692425, now seen corresponding path program 1 times [2023-02-17 08:14:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160958478] [2023-02-17 08:14:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:40,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:40,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:40,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 08:14:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:40,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 08:14:40,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:40,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 08:14:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:40,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:40,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:40,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160958478] [2023-02-17 08:14:40,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160958478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:40,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:40,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:14:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150823941] [2023-02-17 08:14:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:40,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:14:40,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:14:40,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:40,092 INFO L87 Difference]: Start difference. First operand 190 states and 316 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:40,173 INFO L93 Difference]: Finished difference Result 206 states and 321 transitions. [2023-02-17 08:14:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:14:40,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 08:14:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:40,175 INFO L225 Difference]: With dead ends: 206 [2023-02-17 08:14:40,175 INFO L226 Difference]: Without dead ends: 206 [2023-02-17 08:14:40,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:14:40,175 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:40,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:14:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-02-17 08:14:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2023-02-17 08:14:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 172 states have (on average 1.7906976744186047) internal successors, (308), 187 states have internal predecessors, (308), 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) [2023-02-17 08:14:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2023-02-17 08:14:40,186 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 6 [2023-02-17 08:14:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:40,187 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2023-02-17 08:14:40,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 08:14:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2023-02-17 08:14:40,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 08:14:40,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:40,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:40,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:40,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669365, now seen corresponding path program 1 times [2023-02-17 08:14:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:40,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926055232] [2023-02-17 08:14:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:40,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:40,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:40,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 08:14:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 08:14:40,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:40,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:40,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:40,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926055232] [2023-02-17 08:14:40,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926055232] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:40,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:40,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:14:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107818103] [2023-02-17 08:14:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 08:14:40,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 08:14:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 08:14:40,473 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 08:14:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:40,500 INFO L93 Difference]: Finished difference Result 240 states and 333 transitions. [2023-02-17 08:14:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:14:40,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2023-02-17 08:14:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:40,501 INFO L225 Difference]: With dead ends: 240 [2023-02-17 08:14:40,501 INFO L226 Difference]: Without dead ends: 240 [2023-02-17 08:14:40,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:14:40,503 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 101 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:40,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 268 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-17 08:14:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2023-02-17 08:14:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 143 states have internal predecessors, (229), 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) [2023-02-17 08:14:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 229 transitions. [2023-02-17 08:14:40,525 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 229 transitions. Word has length 7 [2023-02-17 08:14:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:40,525 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 229 transitions. [2023-02-17 08:14:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 08:14:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 229 transitions. [2023-02-17 08:14:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 08:14:40,526 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:40,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:40,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:40,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 347531241, now seen corresponding path program 1 times [2023-02-17 08:14:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:40,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640077030] [2023-02-17 08:14:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:40,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:40,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 08:14:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:40,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 08:14:40,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:40,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:14:40,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:40,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640077030] [2023-02-17 08:14:40,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640077030] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:14:40,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:14:40,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:14:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511685324] [2023-02-17 08:14:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:14:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 08:14:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 08:14:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 08:14:40,808 INFO L87 Difference]: Start difference. First operand 144 states and 229 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:40,863 INFO L93 Difference]: Finished difference Result 283 states and 430 transitions. [2023-02-17 08:14:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:14:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-02-17 08:14:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:40,865 INFO L225 Difference]: With dead ends: 283 [2023-02-17 08:14:40,865 INFO L226 Difference]: Without dead ends: 283 [2023-02-17 08:14:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:14:40,865 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:40,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 196 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:14:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-02-17 08:14:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2023-02-17 08:14:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.6559139784946237) internal successors, (308), 197 states have internal predecessors, (308), 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) [2023-02-17 08:14:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 308 transitions. [2023-02-17 08:14:40,869 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 308 transitions. Word has length 8 [2023-02-17 08:14:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:40,869 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 308 transitions. [2023-02-17 08:14:40,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-17 08:14:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 308 transitions. [2023-02-17 08:14:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 08:14:40,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:40,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:40,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-17 08:14:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:41,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash -527615340, now seen corresponding path program 1 times [2023-02-17 08:14:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402060413] [2023-02-17 08:14:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:41,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:41,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 08:14:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:14:41,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 08:14:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:14:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:41,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:14:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:14:41,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:14:41,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402060413] [2023-02-17 08:14:41,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402060413] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 08:14:41,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 08:14:41,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-02-17 08:14:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40548265] [2023-02-17 08:14:41,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 08:14:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 08:14:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:14:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 08:14:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:14:41,157 INFO L87 Difference]: Start difference. First operand 198 states and 308 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-17 08:14:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:14:41,213 INFO L93 Difference]: Finished difference Result 461 states and 690 transitions. [2023-02-17 08:14:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 08:14:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2023-02-17 08:14:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:14:41,215 INFO L225 Difference]: With dead ends: 461 [2023-02-17 08:14:41,215 INFO L226 Difference]: Without dead ends: 461 [2023-02-17 08:14:41,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-02-17 08:14:41,216 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 221 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:14:41,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 471 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:14:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-02-17 08:14:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 258. [2023-02-17 08:14:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 246 states have (on average 1.6016260162601625) internal successors, (394), 257 states have internal predecessors, (394), 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) [2023-02-17 08:14:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 394 transitions. [2023-02-17 08:14:41,220 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 394 transitions. Word has length 12 [2023-02-17 08:14:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:14:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 394 transitions. [2023-02-17 08:14:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-17 08:14:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 394 transitions. [2023-02-17 08:14:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 08:14:41,221 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:14:41,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:41,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-17 08:14:41,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:41,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-17 08:14:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:14:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2027186576, now seen corresponding path program 1 times [2023-02-17 08:14:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:14:41,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143693271] [2023-02-17 08:14:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:14:41,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:41,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:14:41,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 08:14:41,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 08:14:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 08:14:41,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 08:14:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 08:14:41,521 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-17 08:14:41,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 08:14:41,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-02-17 08:14:41,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-02-17 08:14:41,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-02-17 08:14:41,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-02-17 08:14:41,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-02-17 08:14:41,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-02-17 08:14:41,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-02-17 08:14:41,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-02-17 08:14:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-17 08:14:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 08:14:41,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:14:41,738 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 08:14:41,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 08:14:41 BoogieIcfgContainer [2023-02-17 08:14:41,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 08:14:41,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 08:14:41,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 08:14:41,763 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 08:14:41,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:14:38" (3/4) ... [2023-02-17 08:14:41,766 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 08:14:41,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 08:14:41,766 INFO L158 Benchmark]: Toolchain (without parser) took 3866.01ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 42.6MB in the beginning and 85.6MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:14:41,766 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:14:41,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.22ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 42.4MB in the beginning and 65.2MB in the end (delta: -22.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-17 08:14:41,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.70ms. Allocated memory is still 94.4MB. Free memory was 64.8MB in the beginning and 62.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 08:14:41,767 INFO L158 Benchmark]: Boogie Preprocessor took 22.25ms. Allocated memory is still 94.4MB. Free memory was 62.7MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 08:14:41,767 INFO L158 Benchmark]: RCFGBuilder took 390.39ms. Allocated memory is still 94.4MB. Free memory was 61.0MB in the beginning and 69.4MB in the end (delta: -8.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-02-17 08:14:41,768 INFO L158 Benchmark]: TraceAbstraction took 3113.13ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 68.9MB in the beginning and 85.6MB in the end (delta: -16.7MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2023-02-17 08:14:41,768 INFO L158 Benchmark]: Witness Printer took 3.28ms. Allocated memory is still 113.2MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:14:41,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.22ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 42.4MB in the beginning and 65.2MB in the end (delta: -22.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.70ms. Allocated memory is still 94.4MB. Free memory was 64.8MB in the beginning and 62.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.25ms. Allocated memory is still 94.4MB. Free memory was 62.7MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.39ms. Allocated memory is still 94.4MB. Free memory was 61.0MB in the beginning and 69.4MB in the end (delta: -8.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3113.13ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 68.9MB in the beginning and 85.6MB in the end (delta: -16.7MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * Witness Printer took 3.28ms. Allocated memory is still 113.2MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 677 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 677 mSDsluCounter, 1517 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 735 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 782 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=7, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 461 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 7 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-17 08:14:41,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample