./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers2.c --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-ext3/getNumbers2.c -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 cf0bb070a6f67963fcaf42c16427fd9b591ad6ca597a21a650e9cf23fa51a6dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:00:37,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:00:37,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:00:38,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:00:38,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:00:38,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:00:38,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:00:38,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:00:38,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:00:38,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:00:38,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:00:38,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:00:38,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:00:38,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:00:38,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:00:38,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:00:38,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:00:38,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:00:38,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:00:38,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:00:38,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:00:38,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:00:38,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:00:38,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:00:38,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:00:38,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:00:38,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:00:38,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:00:38,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:00:38,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:00:38,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:00:38,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:00:38,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:00:38,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:00:38,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:00:38,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:00:38,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:00:38,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:00:38,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:00:38,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:00:38,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:00:38,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 09:00:38,061 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:00:38,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:00:38,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:00:38,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:00:38,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:00:38,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:00:38,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:00:38,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:00:38,064 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:00:38,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:00:38,065 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 09:00:38,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:00:38,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:00:38,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 09:00:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 09:00:38,067 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:00:38,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:00:38,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:00:38,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:00:38,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:00:38,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:00:38,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:00:38,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:00:38,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:00:38,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:00:38,068 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:00:38,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:00:38,069 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:00:38,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf0bb070a6f67963fcaf42c16427fd9b591ad6ca597a21a650e9cf23fa51a6dd [2023-02-17 09:00:38,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:00:38,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:00:38,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:00:38,338 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:00:38,339 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:00:38,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2023-02-17 09:00:39,408 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:00:39,537 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:00:39,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2023-02-17 09:00:39,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60f3a4634/29704f9277554b329692cf213e1e3f40/FLAG990d9ae1c [2023-02-17 09:00:39,559 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60f3a4634/29704f9277554b329692cf213e1e3f40 [2023-02-17 09:00:39,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:00:39,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:00:39,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:00:39,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:00:39,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:00:39,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6678b160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39, skipping insertion in model container [2023-02-17 09:00:39,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:00:39,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:00:39,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:00:39,697 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:00:39,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:00:39,720 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:00:39,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39 WrapperNode [2023-02-17 09:00:39,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:00:39,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:00:39,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:00:39,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:00:39,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,744 INFO L138 Inliner]: procedures = 10, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-02-17 09:00:39,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:00:39,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:00:39,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:00:39,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:00:39,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:00:39,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:00:39,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:00:39,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:00:39,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:00:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:39,826 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 09:00:39,834 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 09:00:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 09:00:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 09:00:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:00:39,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:00:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 09:00:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 09:00:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 09:00:39,948 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:00:39,950 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:00:40,106 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:00:40,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:00:40,111 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:00:40,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:40 BoogieIcfgContainer [2023-02-17 09:00:40,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:00:40,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:00:40,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:00:40,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:00:40,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:00:39" (1/3) ... [2023-02-17 09:00:40,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac3a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:00:40, skipping insertion in model container [2023-02-17 09:00:40,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (2/3) ... [2023-02-17 09:00:40,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac3a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:00:40, skipping insertion in model container [2023-02-17 09:00:40,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:40" (3/3) ... [2023-02-17 09:00:40,118 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers2.c [2023-02-17 09:00:40,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:00:40,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-02-17 09:00:40,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:00:40,186 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;@38e4cfb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:00:40,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-02-17 09:00:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 27 states have internal predecessors, (31), 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 09:00:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 09:00:40,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 09:00:40,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-17 09:00:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:40,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096470598] [2023-02-17 09:00:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,400 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 09:00:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:40,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096470598] [2023-02-17 09:00:40,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096470598] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:40,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:40,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-17 09:00:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590492751] [2023-02-17 09:00:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:00:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:00:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:00:40,433 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 27 states have internal predecessors, (31), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 09:00:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:40,467 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-02-17 09:00:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:00:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-02-17 09:00:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:40,478 INFO L225 Difference]: With dead ends: 27 [2023-02-17 09:00:40,478 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 09:00:40,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 09:00:40,482 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 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 09:00:40,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 09:00:40,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-17 09:00:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 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 09:00:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-02-17 09:00:40,505 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 4 [2023-02-17 09:00:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:40,506 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-02-17 09:00:40,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 09:00:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-02-17 09:00:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 09:00:40,507 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 09:00:40,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:00:40,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-02-17 09:00:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:40,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914061329] [2023-02-17 09:00:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,617 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 09:00:40,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:40,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914061329] [2023-02-17 09:00:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914061329] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:40,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:40,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:00:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888764508] [2023-02-17 09:00:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:00:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:00:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:00:40,620 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 09:00:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:40,665 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-02-17 09:00:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:00:40,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-02-17 09:00:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:40,666 INFO L225 Difference]: With dead ends: 28 [2023-02-17 09:00:40,666 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 09:00:40,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:00:40,668 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:40,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 09:00:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-02-17 09:00:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 26 states have internal predecessors, (28), 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 09:00:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-02-17 09:00:40,674 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 4 [2023-02-17 09:00:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-02-17 09:00:40,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 09:00:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-02-17 09:00:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:00:40,677 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,677 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-02-17 09:00:40,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:00:40,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2023-02-17 09:00:40,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:40,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102584188] [2023-02-17 09:00:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:40,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102584188] [2023-02-17 09:00:40,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102584188] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:40,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30307921] [2023-02-17 09:00:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:40,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:40,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:00:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:00:40,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30307921] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:40,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:40,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-02-17 09:00:40,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848649414] [2023-02-17 09:00:40,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:41,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 09:00:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 09:00:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-02-17 09:00:41,002 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 09:00:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:41,093 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2023-02-17 09:00:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 09:00:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 09:00:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:41,094 INFO L225 Difference]: With dead ends: 34 [2023-02-17 09:00:41,094 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 09:00:41,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-02-17 09:00:41,096 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 82 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:41,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 35 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 09:00:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-02-17 09:00:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 33 states have internal predecessors, (35), 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 09:00:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-02-17 09:00:41,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 7 [2023-02-17 09:00:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:41,109 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-02-17 09:00:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 09:00:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-02-17 09:00:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:00:41,110 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:41,110 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:41,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 09:00:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:41,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2023-02-17 09:00:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:41,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967216842] [2023-02-17 09:00:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:41,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967216842] [2023-02-17 09:00:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967216842] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539577287] [2023-02-17 09:00:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:41,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:41,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:41,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:00:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:00:41,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:41,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:41,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539577287] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:41,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:41,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-17 09:00:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413488804] [2023-02-17 09:00:41,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 09:00:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 09:00:41,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:41,683 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 09:00:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:41,720 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2023-02-17 09:00:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 09:00:41,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 19 [2023-02-17 09:00:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:41,722 INFO L225 Difference]: With dead ends: 52 [2023-02-17 09:00:41,722 INFO L226 Difference]: Without dead ends: 52 [2023-02-17 09:00:41,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:41,723 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:41,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-17 09:00:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-17 09:00:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 51 states have internal predecessors, (53), 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 09:00:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-02-17 09:00:41,727 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 19 [2023-02-17 09:00:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:41,727 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-02-17 09:00:41,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 09:00:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-02-17 09:00:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 09:00:41,728 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:41,728 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:41,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:41,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 09:00:41,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069290, now seen corresponding path program 2 times [2023-02-17 09:00:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:41,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100494727] [2023-02-17 09:00:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:42,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100494727] [2023-02-17 09:00:42,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100494727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:42,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:42,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:00:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881205038] [2023-02-17 09:00:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:42,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:00:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:00:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:00:42,231 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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 09:00:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:42,261 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2023-02-17 09:00:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:00:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 37 [2023-02-17 09:00:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:42,263 INFO L225 Difference]: With dead ends: 60 [2023-02-17 09:00:42,263 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 09:00:42,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:00:42,265 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:42,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 26 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 09:00:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-02-17 09:00:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 53 states have internal predecessors, (56), 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 09:00:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2023-02-17 09:00:42,273 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 37 [2023-02-17 09:00:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2023-02-17 09:00:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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 09:00:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2023-02-17 09:00:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 09:00:42,274 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:42,274 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:42,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 09:00:42,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 1 times [2023-02-17 09:00:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:42,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611245920] [2023-02-17 09:00:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:42,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611245920] [2023-02-17 09:00:42,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611245920] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:42,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:42,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:00:42,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796109735] [2023-02-17 09:00:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:42,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:00:42,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:00:42,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:00:42,402 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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 09:00:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:42,427 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2023-02-17 09:00:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:00:42,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 37 [2023-02-17 09:00:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:42,430 INFO L225 Difference]: With dead ends: 53 [2023-02-17 09:00:42,430 INFO L226 Difference]: Without dead ends: 53 [2023-02-17 09:00:42,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:00:42,431 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:42,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-17 09:00:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-17 09:00:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.148936170212766) internal successors, (54), 52 states have internal predecessors, (54), 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 09:00:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2023-02-17 09:00:42,438 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 37 [2023-02-17 09:00:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:42,438 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2023-02-17 09:00:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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 09:00:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2023-02-17 09:00:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 09:00:42,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:42,441 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 09:00:42,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -708557702, now seen corresponding path program 1 times [2023-02-17 09:00:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:42,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949422827] [2023-02-17 09:00:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:42,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949422827] [2023-02-17 09:00:42,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949422827] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:42,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:42,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:00:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275565307] [2023-02-17 09:00:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:00:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:00:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:00:42,518 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 09:00:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:42,532 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2023-02-17 09:00:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:00:42,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 38 [2023-02-17 09:00:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:42,533 INFO L225 Difference]: With dead ends: 52 [2023-02-17 09:00:42,533 INFO L226 Difference]: Without dead ends: 52 [2023-02-17 09:00:42,533 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 09:00:42,534 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:42,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-17 09:00:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-17 09:00:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.127659574468085) internal successors, (53), 51 states have internal predecessors, (53), 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 09:00:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-02-17 09:00:42,547 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 38 [2023-02-17 09:00:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:42,548 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-02-17 09:00:42,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 09:00:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-02-17 09:00:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 09:00:42,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:42,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:42,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 09:00:42,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:42,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash -708557701, now seen corresponding path program 1 times [2023-02-17 09:00:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:42,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304641088] [2023-02-17 09:00:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:42,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:42,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:42,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304641088] [2023-02-17 09:00:42,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304641088] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:42,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:42,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:00:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390158798] [2023-02-17 09:00:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:00:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:00:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:00:42,631 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 09:00:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:42,649 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2023-02-17 09:00:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:00:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 38 [2023-02-17 09:00:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:42,650 INFO L225 Difference]: With dead ends: 55 [2023-02-17 09:00:42,650 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 09:00:42,651 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 09:00:42,652 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:42,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 09:00:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-02-17 09:00:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.125) internal successors, (54), 52 states have internal predecessors, (54), 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 09:00:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2023-02-17 09:00:42,655 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 38 [2023-02-17 09:00:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:42,656 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2023-02-17 09:00:42,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 09:00:42,656 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2023-02-17 09:00:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 09:00:42,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:42,657 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 09:00:42,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 414994334, now seen corresponding path program 1 times [2023-02-17 09:00:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:42,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838351500] [2023-02-17 09:00:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:42,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838351500] [2023-02-17 09:00:42,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838351500] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:42,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332109877] [2023-02-17 09:00:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:42,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:42,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:42,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 09:00:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:42,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-17 09:00:42,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:43,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 09:00:43,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 09:00:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:43,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:43,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332109877] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:43,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:43,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-02-17 09:00:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954460055] [2023-02-17 09:00:43,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 09:00:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 09:00:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-17 09:00:43,261 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 09:00:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:43,343 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2023-02-17 09:00:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 09:00:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 42 [2023-02-17 09:00:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:43,344 INFO L225 Difference]: With dead ends: 85 [2023-02-17 09:00:43,344 INFO L226 Difference]: Without dead ends: 85 [2023-02-17 09:00:43,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-17 09:00:43,345 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 64 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:00:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-17 09:00:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2023-02-17 09:00:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 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 09:00:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2023-02-17 09:00:43,347 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2023-02-17 09:00:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:43,347 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2023-02-17 09:00:43,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 09:00:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2023-02-17 09:00:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 09:00:43,348 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:43,348 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:43,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:43,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:43,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash -20077561, now seen corresponding path program 1 times [2023-02-17 09:00:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:43,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048001339] [2023-02-17 09:00:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-17 09:00:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048001339] [2023-02-17 09:00:43,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048001339] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662042381] [2023-02-17 09:00:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:43,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:43,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 09:00:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:43,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 09:00:43,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:43,749 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 09:00:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:43,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:43,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662042381] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:43,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:43,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 10 [2023-02-17 09:00:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581272715] [2023-02-17 09:00:43,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:43,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 09:00:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 09:00:43,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-17 09:00:43,786 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 states have internal predecessors, (41), 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 09:00:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:43,862 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2023-02-17 09:00:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:00:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 states have internal predecessors, (41), 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 43 [2023-02-17 09:00:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:43,864 INFO L225 Difference]: With dead ends: 66 [2023-02-17 09:00:43,864 INFO L226 Difference]: Without dead ends: 66 [2023-02-17 09:00:43,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-02-17 09:00:43,865 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 101 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 42 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-17 09:00:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-02-17 09:00:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 65 states have internal predecessors, (67), 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 09:00:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2023-02-17 09:00:43,868 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 43 [2023-02-17 09:00:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:43,868 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2023-02-17 09:00:43,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 states have internal predecessors, (41), 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 09:00:43,869 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2023-02-17 09:00:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-17 09:00:43,869 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:43,869 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:43,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:44,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:44,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1470341546, now seen corresponding path program 2 times [2023-02-17 09:00:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047561577] [2023-02-17 09:00:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047561577] [2023-02-17 09:00:44,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047561577] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788889802] [2023-02-17 09:00:44,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:00:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:44,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:44,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 09:00:44,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:00:44,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:00:44,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 09:00:44,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 09:00:44,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 09:00:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:44,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:44,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788889802] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:44,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:44,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-02-17 09:00:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379726958] [2023-02-17 09:00:44,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 09:00:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 09:00:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-02-17 09:00:44,741 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:00:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:45,037 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2023-02-17 09:00:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 09:00:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-02-17 09:00:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:45,038 INFO L225 Difference]: With dead ends: 136 [2023-02-17 09:00:45,038 INFO L226 Difference]: Without dead ends: 136 [2023-02-17 09:00:45,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 09:00:45,039 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 652 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:45,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 151 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:00:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-17 09:00:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2023-02-17 09:00:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.108695652173913) internal successors, (102), 95 states have internal predecessors, (102), 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 09:00:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2023-02-17 09:00:45,041 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 57 [2023-02-17 09:00:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:45,041 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2023-02-17 09:00:45,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:00:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2023-02-17 09:00:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-17 09:00:45,041 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:45,042 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:45,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:45,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 09:00:45,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 893071724, now seen corresponding path program 1 times [2023-02-17 09:00:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:45,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239881329] [2023-02-17 09:00:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:45,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:45,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239881329] [2023-02-17 09:00:45,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239881329] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:45,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911852356] [2023-02-17 09:00:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:45,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:45,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:45,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 09:00:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:45,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 09:00:45,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:45,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:45,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911852356] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:45,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:45,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-02-17 09:00:45,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529793155] [2023-02-17 09:00:45,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:45,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 09:00:45,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:45,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 09:00:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:45,522 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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 09:00:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:45,564 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2023-02-17 09:00:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 09:00:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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 64 [2023-02-17 09:00:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:45,565 INFO L225 Difference]: With dead ends: 96 [2023-02-17 09:00:45,565 INFO L226 Difference]: Without dead ends: 96 [2023-02-17 09:00:45,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:45,565 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:45,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-17 09:00:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-02-17 09:00:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 95 states have internal predecessors, (97), 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 09:00:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2023-02-17 09:00:45,567 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 64 [2023-02-17 09:00:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:45,567 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2023-02-17 09:00:45,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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 09:00:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2023-02-17 09:00:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-17 09:00:45,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:45,568 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:45,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:45,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:45,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash -713446614, now seen corresponding path program 3 times [2023-02-17 09:00:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650208361] [2023-02-17 09:00:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-17 09:00:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650208361] [2023-02-17 09:00:45,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650208361] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668133234] [2023-02-17 09:00:45,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:00:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:45,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:45,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:45,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 09:00:46,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-17 09:00:46,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:00:46,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 09:00:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:46,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 09:00:46,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 09:00:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-02-17 09:00:46,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 09:00:46,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668133234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:46,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 09:00:46,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 19 [2023-02-17 09:00:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398879802] [2023-02-17 09:00:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 09:00:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 09:00:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-02-17 09:00:46,113 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 09:00:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:46,151 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2023-02-17 09:00:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 09:00:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 87 [2023-02-17 09:00:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:46,152 INFO L225 Difference]: With dead ends: 95 [2023-02-17 09:00:46,152 INFO L226 Difference]: Without dead ends: 95 [2023-02-17 09:00:46,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-02-17 09:00:46,152 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 29 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-17 09:00:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2023-02-17 09:00:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 91 states have (on average 1.043956043956044) internal successors, (95), 93 states have internal predecessors, (95), 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 09:00:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2023-02-17 09:00:46,154 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 87 [2023-02-17 09:00:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:46,154 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2023-02-17 09:00:46,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 09:00:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2023-02-17 09:00:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-17 09:00:46,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:46,155 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:46,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:46,362 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 09:00:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1572522744, now seen corresponding path program 2 times [2023-02-17 09:00:46,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:46,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234954673] [2023-02-17 09:00:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:00:46,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:00:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:00:46,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:00:46,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 09:00:46,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-02-17 09:00:46,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-02-17 09:00:46,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-02-17 09:00:46,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-02-17 09:00:46,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 09:00:46,452 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:46,455 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:00:46,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:00:46 BoogieIcfgContainer [2023-02-17 09:00:46,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:00:46,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:00:46,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:00:46,491 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:00:46,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:40" (3/4) ... [2023-02-17 09:00:46,493 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 09:00:46,545 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:00:46,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:00:46,545 INFO L158 Benchmark]: Toolchain (without parser) took 6983.05ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 105.9MB in the beginning and 68.9MB in the end (delta: 37.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,546 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:00:46,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.43ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 96.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.02ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,546 INFO L158 Benchmark]: Boogie Preprocessor took 35.45ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,546 INFO L158 Benchmark]: RCFGBuilder took 330.75ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,547 INFO L158 Benchmark]: TraceAbstraction took 6377.15ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 81.6MB in the beginning and 73.1MB in the end (delta: 8.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,547 INFO L158 Benchmark]: Witness Printer took 53.80ms. Allocated memory is still 172.0MB. Free memory was 73.1MB in the beginning and 68.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 09:00:46,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.43ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 96.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.02ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.45ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.75ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6377.15ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 81.6MB in the beginning and 73.1MB in the end (delta: 8.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 53.80ms. Allocated memory is still 172.0MB. Free memory was 73.1MB in the beginning and 68.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [array={1:0}] [L25] CALL, EXPR getNumbers2() [L13] CALL, EXPR getNumbers() [L5] int i = 0; VAL [array={1:0}, i=0] [L5] COND TRUE i < 10 VAL [array={1:0}, i=0] [L6] array[i] = i VAL [array={1:0}, i=0] [L5] ++i VAL [array={1:0}, i=1] [L5] COND TRUE i < 10 VAL [array={1:0}, i=1] [L6] array[i] = i VAL [array={1:0}, i=1] [L5] ++i VAL [array={1:0}, i=2] [L5] COND TRUE i < 10 VAL [array={1:0}, i=2] [L6] array[i] = i VAL [array={1:0}, i=2] [L5] ++i VAL [array={1:0}, i=3] [L5] COND TRUE i < 10 VAL [array={1:0}, i=3] [L6] array[i] = i VAL [array={1:0}, i=3] [L5] ++i VAL [array={1:0}, i=4] [L5] COND TRUE i < 10 VAL [array={1:0}, i=4] [L6] array[i] = i VAL [array={1:0}, i=4] [L5] ++i VAL [array={1:0}, i=5] [L5] COND TRUE i < 10 VAL [array={1:0}, i=5] [L6] array[i] = i VAL [array={1:0}, i=5] [L5] ++i VAL [array={1:0}, i=6] [L5] COND TRUE i < 10 VAL [array={1:0}, i=6] [L6] array[i] = i VAL [array={1:0}, i=6] [L5] ++i VAL [array={1:0}, i=7] [L5] COND TRUE i < 10 VAL [array={1:0}, i=7] [L6] array[i] = i VAL [array={1:0}, i=7] [L5] ++i VAL [array={1:0}, i=8] [L5] COND TRUE i < 10 VAL [array={1:0}, i=8] [L6] array[i] = i VAL [array={1:0}, i=8] [L5] ++i VAL [array={1:0}, i=9] [L5] COND TRUE i < 10 VAL [array={1:0}, i=9] [L6] array[i] = i VAL [array={1:0}, i=9] [L5] ++i VAL [array={1:0}, i=10] [L5] COND FALSE !(i < 10) VAL [array={1:0}, i=10] [L9] return array; VAL [\result={1:0}, array={1:0}, i=10] [L13] RET, EXPR getNumbers() [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}, numbers[i]=0] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}, numbers[i]=0] [L17] ++i VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}, numbers[i]=1] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}, numbers[i]=1] [L17] ++i VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}, numbers[i]=2] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}, numbers[i]=2] [L17] ++i VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}, numbers[i]=3] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}, numbers[i]=3] [L17] ++i VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}, numbers[i]=4] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}, numbers[i]=4] [L17] ++i VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}, numbers[i]=5] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}, numbers[i]=5] [L17] ++i VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}, numbers[i]=6] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}, numbers[i]=6] [L17] ++i VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}, numbers[i]=7] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}, numbers[i]=7] [L17] ++i VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}, numbers[i]=8] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}, numbers[i]=8] [L17] ++i VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}, numbers[i]=9] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}, numbers[i]=9] [L17] ++i VAL [array={1:0}, i=10, numbers={1:0}, numbers2={10:0}] [L17] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers={1:0}, numbers2={10:0}] [L21] return numbers2; [L21] return numbers2; VAL [\result={10:0}, array={1:0}, i=10, numbers={1:0}] [L25] RET, EXPR getNumbers2() [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - 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: 24]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1165 mSDsluCounter, 605 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 752 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 204 mSDtfsCounter, 752 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 640 GetRequests, 487 SyntacticMatches, 13 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=11, InterpolantAutomatonStates: 95, 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, 13 MinimizatonAttempts, 68 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 885 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1002 ConstructedInterpolants, 68 QuantifiedInterpolants, 11647 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1045 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 3056/3466 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 proved your program to be incorrect! [2023-02-17 09:00:46,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)