./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/getNumbers4-2.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 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:11:35,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:11:35,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:11:36,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:11:36,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:11:36,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:11:36,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:11:36,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:11:36,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:11:36,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:11:36,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:11:36,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:11:36,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:11:36,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:11:36,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:11:36,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:11:36,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:11:36,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:11:36,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:11:36,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:11:36,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:11:36,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:11:36,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:11:36,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:11:36,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:11:36,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:11:36,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:11:36,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:11:36,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:11:36,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:11:36,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:11:36,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:11:36,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:11:36,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:11:36,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:11:36,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:11:36,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:11:36,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:11:36,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:11:36,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:11:36,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:11:36,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 07:11:36,082 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:11:36,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:11:36,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:11:36,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:11:36,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:11:36,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:11:36,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:11:36,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:11:36,084 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:11:36,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:11:36,085 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:11:36,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:11:36,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:11:36,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:11:36,087 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:11:36,087 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:11:36,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:11:36,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:11:36,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:11:36,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:36,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:11:36,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:11:36,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:11:36,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:11:36,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:11:36,089 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:11:36,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:11:36,089 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:11:36,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2023-02-18 07:11:36,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:11:36,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:11:36,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:11:36,334 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:11:36,335 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:11:36,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2023-02-18 07:11:37,346 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:11:37,480 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:11:37,481 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2023-02-18 07:11:37,485 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad677fb5b/f58eca5c0d824182a9f1e500add22dd9/FLAG0c4268356 [2023-02-18 07:11:37,494 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad677fb5b/f58eca5c0d824182a9f1e500add22dd9 [2023-02-18 07:11:37,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:11:37,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:11:37,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:37,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:11:37,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:11:37,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625ef4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37, skipping insertion in model container [2023-02-18 07:11:37,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:11:37,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:11:37,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:37,638 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:11:37,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:37,671 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:11:37,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37 WrapperNode [2023-02-18 07:11:37,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:37,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:11:37,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:11:37,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:11:37,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,707 INFO L138 Inliner]: procedures = 13, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 94 [2023-02-18 07:11:37,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:11:37,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:11:37,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:11:37,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:11:37,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:11:37,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:11:37,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:11:37,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:11:37,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (1/1) ... [2023-02-18 07:11:37,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:37,774 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) [2023-02-18 07:11:37,792 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 [2023-02-18 07:11:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 07:11:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 07:11:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 07:11:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:11:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:11:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 07:11:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 07:11:37,899 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:11:37,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:11:38,118 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:11:38,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:11:38,124 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-18 07:11:38,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:38 BoogieIcfgContainer [2023-02-18 07:11:38,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:11:38,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:11:38,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:11:38,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:11:38,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:11:37" (1/3) ... [2023-02-18 07:11:38,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb128d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:11:38, skipping insertion in model container [2023-02-18 07:11:38,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:37" (2/3) ... [2023-02-18 07:11:38,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb128d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:11:38, skipping insertion in model container [2023-02-18 07:11:38,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:38" (3/3) ... [2023-02-18 07:11:38,133 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2023-02-18 07:11:38,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:11:38,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-02-18 07:11:38,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:11:38,194 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;@3022a9d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:11:38,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-02-18 07:11:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 52 states have internal predecessors, (62), 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) [2023-02-18 07:11:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-18 07:11:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:38,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-18 07:11:38,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-18 07:11:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:38,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266770428] [2023-02-18 07:11:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:38,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266770428] [2023-02-18 07:11:38,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266770428] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:38,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:38,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:11:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619451363] [2023-02-18 07:11:38,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:11:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:11:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:11:38,367 INFO L87 Difference]: Start difference. First operand has 53 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 52 states have internal predecessors, (62), 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) [2023-02-18 07:11:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:38,430 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2023-02-18 07:11:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:11:38,433 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 [2023-02-18 07:11:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:38,438 INFO L225 Difference]: With dead ends: 52 [2023-02-18 07:11:38,439 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 07:11:38,440 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 [2023-02-18 07:11:38,444 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:38,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 07:11:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-18 07:11:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.588235294117647) internal successors, (54), 49 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) [2023-02-18 07:11:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-18 07:11:38,498 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 4 [2023-02-18 07:11:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-18 07:11:38,498 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) [2023-02-18 07:11:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-18 07:11:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-18 07:11:38,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:38,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-18 07:11:38,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:11:38,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-02-18 07:11:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:38,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893697460] [2023-02-18 07:11:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:38,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:38,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:38,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893697460] [2023-02-18 07:11:38,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893697460] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:38,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:38,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:11:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144193918] [2023-02-18 07:11:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:38,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:11:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:11:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:11:38,634 INFO L87 Difference]: Start difference. First operand 50 states and 54 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) [2023-02-18 07:11:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:38,709 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-02-18 07:11:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:11:38,709 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 [2023-02-18 07:11:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:38,710 INFO L225 Difference]: With dead ends: 53 [2023-02-18 07:11:38,710 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 07:11:38,710 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 [2023-02-18 07:11:38,711 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 65 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 07:11:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-02-18 07:11:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 51 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) [2023-02-18 07:11:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-02-18 07:11:38,716 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 4 [2023-02-18 07:11:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:38,716 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-02-18 07:11:38,716 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) [2023-02-18 07:11:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-02-18 07:11:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:11:38,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:38,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-02-18 07:11:38,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:11:38,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2023-02-18 07:11:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:38,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501179272] [2023-02-18 07:11:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:38,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:38,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:38,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501179272] [2023-02-18 07:11:38,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501179272] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:38,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431376775] [2023-02-18 07:11:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:38,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:38,846 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) [2023-02-18 07:11:38,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:11:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:38,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:11:38,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:38,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:38,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431376775] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:38,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:38,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-02-18 07:11:38,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498980595] [2023-02-18 07:11:38,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:38,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 07:11:38,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 07:11:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:11:38,952 INFO L87 Difference]: Start difference. First operand 52 states and 56 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) [2023-02-18 07:11:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:39,062 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2023-02-18 07:11:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:11:39,062 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 [2023-02-18 07:11:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:39,063 INFO L225 Difference]: With dead ends: 59 [2023-02-18 07:11:39,063 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 07:11:39,064 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 [2023-02-18 07:11:39,064 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 166 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:39,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 126 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 07:11:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-18 07:11:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 58 states have internal predecessors, (63), 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) [2023-02-18 07:11:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2023-02-18 07:11:39,069 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 7 [2023-02-18 07:11:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:39,069 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2023-02-18 07:11:39,069 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) [2023-02-18 07:11:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2023-02-18 07:11:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 07:11:39,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:39,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:39,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:39,274 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 [2023-02-18 07:11:39,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2023-02-18 07:11:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:39,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802262269] [2023-02-18 07:11:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:39,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802262269] [2023-02-18 07:11:39,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802262269] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:39,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145178656] [2023-02-18 07:11:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:39,409 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) [2023-02-18 07:11:39,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 07:11:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:39,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:11:39,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:39,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:39,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145178656] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:39,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:39,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 07:11:39,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733558345] [2023-02-18 07:11:39,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:11:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:11:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:11:39,589 INFO L87 Difference]: Start difference. First operand 59 states and 63 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) [2023-02-18 07:11:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:39,630 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2023-02-18 07:11:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:11:39,630 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 [2023-02-18 07:11:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:39,631 INFO L225 Difference]: With dead ends: 77 [2023-02-18 07:11:39,631 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 07:11:39,632 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 [2023-02-18 07:11:39,634 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:39,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 290 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 07:11:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 07:11:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 76 states have internal predecessors, (81), 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) [2023-02-18 07:11:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-02-18 07:11:39,643 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 19 [2023-02-18 07:11:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:39,644 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-02-18 07:11:39,644 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) [2023-02-18 07:11:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-02-18 07:11:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 07:11:39,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:39,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:39,845 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 [2023-02-18 07:11:39,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:39,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:39,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069290, now seen corresponding path program 2 times [2023-02-18 07:11:39,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:39,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071415340] [2023-02-18 07:11:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:39,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071415340] [2023-02-18 07:11:40,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071415340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:40,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:11:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448961799] [2023-02-18 07:11:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:11:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:11:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:11:40,047 INFO L87 Difference]: Start difference. First operand 77 states and 81 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) [2023-02-18 07:11:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:40,102 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2023-02-18 07:11:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 07:11:40,103 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 [2023-02-18 07:11:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:40,103 INFO L225 Difference]: With dead ends: 85 [2023-02-18 07:11:40,104 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 07:11:40,105 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 [2023-02-18 07:11:40,105 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:40,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 07:11:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-02-18 07:11:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.3125) internal successors, (84), 78 states have internal predecessors, (84), 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) [2023-02-18 07:11:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2023-02-18 07:11:40,116 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 37 [2023-02-18 07:11:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2023-02-18 07:11:40,117 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) [2023-02-18 07:11:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2023-02-18 07:11:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 07:11:40,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:40,118 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:11:40,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 1 times [2023-02-18 07:11:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:40,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73291991] [2023-02-18 07:11:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:40,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-02-18 07:11:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:40,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73291991] [2023-02-18 07:11:40,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73291991] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:40,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:40,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:11:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898732869] [2023-02-18 07:11:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:11:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:11:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:11:40,204 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:40,238 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2023-02-18 07:11:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 07:11:40,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 07:11:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:40,240 INFO L225 Difference]: With dead ends: 78 [2023-02-18 07:11:40,240 INFO L226 Difference]: Without dead ends: 78 [2023-02-18 07:11:40,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:11:40,243 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:40,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 89 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-18 07:11:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-02-18 07:11:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.28125) internal successors, (82), 77 states have internal predecessors, (82), 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) [2023-02-18 07:11:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-02-18 07:11:40,259 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 37 [2023-02-18 07:11:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:40,259 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-02-18 07:11:40,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-02-18 07:11:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 07:11:40,262 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:40,262 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:11:40,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash -708557702, now seen corresponding path program 1 times [2023-02-18 07:11:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:40,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366774758] [2023-02-18 07:11:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:40,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366774758] [2023-02-18 07:11:40,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366774758] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:40,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:40,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:11:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850104488] [2023-02-18 07:11:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:11:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:11:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:11:40,346 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2023-02-18 07:11:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:40,365 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2023-02-18 07:11:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:11:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2023-02-18 07:11:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:40,367 INFO L225 Difference]: With dead ends: 77 [2023-02-18 07:11:40,367 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 07:11:40,367 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 [2023-02-18 07:11:40,368 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 07:11:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 07:11:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.265625) internal successors, (81), 76 states have internal predecessors, (81), 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) [2023-02-18 07:11:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-02-18 07:11:40,375 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 38 [2023-02-18 07:11:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:40,376 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-02-18 07:11:40,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2023-02-18 07:11:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-02-18 07:11:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 07:11:40,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:40,377 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:40,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 07:11:40,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash -708557701, now seen corresponding path program 1 times [2023-02-18 07:11:40,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:40,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085997875] [2023-02-18 07:11:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:40,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:40,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085997875] [2023-02-18 07:11:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085997875] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:40,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:40,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:11:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228185476] [2023-02-18 07:11:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:40,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:11:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:11:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:11:40,539 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-02-18 07:11:40,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:40,577 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2023-02-18 07:11:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:11:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2023-02-18 07:11:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:40,579 INFO L225 Difference]: With dead ends: 80 [2023-02-18 07:11:40,579 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 07:11:40,579 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 [2023-02-18 07:11:40,580 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:40,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 60 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:40,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 07:11:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-02-18 07:11:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 77 states have internal predecessors, (82), 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) [2023-02-18 07:11:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-02-18 07:11:40,589 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 38 [2023-02-18 07:11:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:40,590 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-02-18 07:11:40,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-02-18 07:11:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-02-18 07:11:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 07:11:40,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:40,591 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 07:11:40,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 414994334, now seen corresponding path program 1 times [2023-02-18 07:11:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:40,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587083504] [2023-02-18 07:11:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587083504] [2023-02-18 07:11:40,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587083504] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807052603] [2023-02-18 07:11:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:40,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:40,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:40,732 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) [2023-02-18 07:11:40,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 07:11:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:40,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 07:11:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:40,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807052603] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:40,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:40,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-02-18 07:11:40,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084017373] [2023-02-18 07:11:40,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:40,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 07:11:40,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 07:11:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-18 07:11:40,937 INFO L87 Difference]: Start difference. First operand 78 states and 82 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) [2023-02-18 07:11:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:41,042 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2023-02-18 07:11:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:11:41,043 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 [2023-02-18 07:11:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:41,045 INFO L225 Difference]: With dead ends: 98 [2023-02-18 07:11:41,045 INFO L226 Difference]: Without dead ends: 98 [2023-02-18 07:11:41,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-18 07:11:41,047 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 293 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:41,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 97 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-18 07:11:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2023-02-18 07:11:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 91 states have internal predecessors, (100), 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) [2023-02-18 07:11:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-02-18 07:11:41,049 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 42 [2023-02-18 07:11:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:41,049 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-02-18 07:11:41,049 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) [2023-02-18 07:11:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-02-18 07:11:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-18 07:11:41,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:41,050 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:41,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 07:11:41,262 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 [2023-02-18 07:11:41,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -20077561, now seen corresponding path program 1 times [2023-02-18 07:11:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577584321] [2023-02-18 07:11:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:41,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577584321] [2023-02-18 07:11:41,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577584321] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:41,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067985512] [2023-02-18 07:11:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:41,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:41,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:41,399 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) [2023-02-18 07:11:41,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 07:11:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:41,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:11:41,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:41,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:41,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067985512] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:41,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:41,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-02-18 07:11:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771246586] [2023-02-18 07:11:41,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 07:11:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 07:11:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-18 07:11:41,516 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 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) [2023-02-18 07:11:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:41,621 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2023-02-18 07:11:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:11:41,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 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 [2023-02-18 07:11:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:41,621 INFO L225 Difference]: With dead ends: 93 [2023-02-18 07:11:41,622 INFO L226 Difference]: Without dead ends: 93 [2023-02-18 07:11:41,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-02-18 07:11:41,622 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:41,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 173 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-18 07:11:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-18 07:11:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.2125) internal successors, (97), 92 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) [2023-02-18 07:11:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2023-02-18 07:11:41,624 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 43 [2023-02-18 07:11:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:41,624 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2023-02-18 07:11:41,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 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) [2023-02-18 07:11:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2023-02-18 07:11:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-18 07:11:41,625 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:41,625 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:41,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:41,830 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 [2023-02-18 07:11:41,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1470341546, now seen corresponding path program 2 times [2023-02-18 07:11:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:41,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693901330] [2023-02-18 07:11:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693901330] [2023-02-18 07:11:41,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693901330] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567312769] [2023-02-18 07:11:41,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:11:41,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:41,995 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) [2023-02-18 07:11:41,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 07:11:42,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:11:42,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 07:11:42,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:42,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:42,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567312769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:42,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:42,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-02-18 07:11:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544299278] [2023-02-18 07:11:42,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:42,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 07:11:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 07:11:42,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-02-18 07:11:42,285 INFO L87 Difference]: Start difference. First operand 93 states and 97 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) [2023-02-18 07:11:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:42,620 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2023-02-18 07:11:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 07:11:42,620 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 [2023-02-18 07:11:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:42,621 INFO L225 Difference]: With dead ends: 137 [2023-02-18 07:11:42,621 INFO L226 Difference]: Without dead ends: 137 [2023-02-18 07:11:42,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 07:11:42,622 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 596 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:42,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 304 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:11:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-18 07:11:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2023-02-18 07:11:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 121 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2023-02-18 07:11:42,625 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 57 [2023-02-18 07:11:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:42,625 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2023-02-18 07:11:42,626 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) [2023-02-18 07:11:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2023-02-18 07:11:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-18 07:11:42,630 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:42,630 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:42,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:42,835 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 [2023-02-18 07:11:42,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1664052357, now seen corresponding path program 2 times [2023-02-18 07:11:42,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:42,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862452750] [2023-02-18 07:11:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862452750] [2023-02-18 07:11:42,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862452750] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010089063] [2023-02-18 07:11:42,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:11:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:42,980 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) [2023-02-18 07:11:43,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 07:11:43,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 07:11:43,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:43,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 07:11:43,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-02-18 07:11:43,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-02-18 07:11:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010089063] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:43,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:43,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-02-18 07:11:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525637495] [2023-02-18 07:11:43,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:43,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 07:11:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 07:11:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-18 07:11:43,257 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2023-02-18 07:11:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:43,430 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2023-02-18 07:11:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:11:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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 58 [2023-02-18 07:11:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:43,431 INFO L225 Difference]: With dead ends: 121 [2023-02-18 07:11:43,431 INFO L226 Difference]: Without dead ends: 121 [2023-02-18 07:11:43,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-02-18 07:11:43,432 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 334 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:43,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 141 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-18 07:11:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-02-18 07:11:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.18348623853211) internal successors, (129), 120 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2023-02-18 07:11:43,436 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 58 [2023-02-18 07:11:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:43,436 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2023-02-18 07:11:43,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2023-02-18 07:11:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2023-02-18 07:11:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 07:11:43,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:43,437 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:43,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:43,642 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 [2023-02-18 07:11:43,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 797853176, now seen corresponding path program 1 times [2023-02-18 07:11:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:43,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604672357] [2023-02-18 07:11:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:43,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604672357] [2023-02-18 07:11:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604672357] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16539563] [2023-02-18 07:11:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:43,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:43,754 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) [2023-02-18 07:11:43,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 07:11:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:43,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 07:11:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:43,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:43,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16539563] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:43,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:43,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-02-18 07:11:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221639362] [2023-02-18 07:11:43,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:11:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:11:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:11:43,949 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2023-02-18 07:11:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:43,985 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2023-02-18 07:11:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:11:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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 70 [2023-02-18 07:11:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:43,986 INFO L225 Difference]: With dead ends: 121 [2023-02-18 07:11:43,986 INFO L226 Difference]: Without dead ends: 121 [2023-02-18 07:11:43,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:11:43,987 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 5 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 137 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 [2023-02-18 07:11:43,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 137 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-18 07:11:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-02-18 07:11:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.146788990825688) internal successors, (125), 120 states have internal predecessors, (125), 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) [2023-02-18 07:11:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2023-02-18 07:11:43,989 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 70 [2023-02-18 07:11:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:43,989 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2023-02-18 07:11:43,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2023-02-18 07:11:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2023-02-18 07:11:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-18 07:11:43,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:43,990 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:43,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:44,196 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 [2023-02-18 07:11:44,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -713446614, now seen corresponding path program 3 times [2023-02-18 07:11:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:44,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081879086] [2023-02-18 07:11:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 07:11:44,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:44,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081879086] [2023-02-18 07:11:44,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081879086] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:44,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803179968] [2023-02-18 07:11:44,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:11:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:44,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:44,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 07:11:44,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 07:11:44,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:44,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 07:11:44,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-02-18 07:11:44,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:11:44,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803179968] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:44,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:11:44,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 20 [2023-02-18 07:11:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524527121] [2023-02-18 07:11:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:11:44,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:11:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-02-18 07:11:44,777 INFO L87 Difference]: Start difference. First operand 121 states and 125 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) [2023-02-18 07:11:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:44,839 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2023-02-18 07:11:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:11:44,840 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 [2023-02-18 07:11:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:44,840 INFO L225 Difference]: With dead ends: 120 [2023-02-18 07:11:44,840 INFO L226 Difference]: Without dead ends: 120 [2023-02-18 07:11:44,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-02-18 07:11:44,841 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 156 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:44,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 64 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-18 07:11:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2023-02-18 07:11:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 118 states have internal predecessors, (123), 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) [2023-02-18 07:11:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2023-02-18 07:11:44,843 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 87 [2023-02-18 07:11:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:44,844 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2023-02-18 07:11:44,844 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) [2023-02-18 07:11:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2023-02-18 07:11:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-18 07:11:44,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:44,848 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:44,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:45,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-18 07:11:45,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1503565048, now seen corresponding path program 2 times [2023-02-18 07:11:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271147843] [2023-02-18 07:11:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:45,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271147843] [2023-02-18 07:11:45,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271147843] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:45,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:11:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890512003] [2023-02-18 07:11:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:11:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:11:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:11:45,196 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-18 07:11:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:45,222 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2023-02-18 07:11:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 07:11:45,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 90 [2023-02-18 07:11:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:45,223 INFO L225 Difference]: With dead ends: 118 [2023-02-18 07:11:45,223 INFO L226 Difference]: Without dead ends: 118 [2023-02-18 07:11:45,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:11:45,223 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 100 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-18 07:11:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-02-18 07:11:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 117 states have internal predecessors, (122), 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) [2023-02-18 07:11:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2023-02-18 07:11:45,225 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 90 [2023-02-18 07:11:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:45,225 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2023-02-18 07:11:45,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-18 07:11:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2023-02-18 07:11:45,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-18 07:11:45,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:45,226 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:45,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 07:11:45,226 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1503565049, now seen corresponding path program 1 times [2023-02-18 07:11:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:45,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653080736] [2023-02-18 07:11:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-02-18 07:11:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:45,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653080736] [2023-02-18 07:11:45,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653080736] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:45,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:45,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:11:45,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841882838] [2023-02-18 07:11:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:11:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:11:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:11:45,435 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2023-02-18 07:11:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:45,484 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2023-02-18 07:11:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:11:45,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 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 90 [2023-02-18 07:11:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:45,485 INFO L225 Difference]: With dead ends: 125 [2023-02-18 07:11:45,485 INFO L226 Difference]: Without dead ends: 125 [2023-02-18 07:11:45,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:11:45,486 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:45,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 87 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-18 07:11:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2023-02-18 07:11:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 119 states have internal predecessors, (124), 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) [2023-02-18 07:11:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-02-18 07:11:45,489 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 90 [2023-02-18 07:11:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:45,489 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-02-18 07:11:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2023-02-18 07:11:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-02-18 07:11:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-02-18 07:11:45,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:45,489 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 07:11:45,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -634123742, now seen corresponding path program 1 times [2023-02-18 07:11:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:45,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878443938] [2023-02-18 07:11:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:45,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878443938] [2023-02-18 07:11:45,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878443938] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:45,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:45,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:11:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811691605] [2023-02-18 07:11:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:11:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:11:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:11:45,561 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-02-18 07:11:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:45,573 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2023-02-18 07:11:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:11:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 91 [2023-02-18 07:11:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:45,574 INFO L225 Difference]: With dead ends: 119 [2023-02-18 07:11:45,574 INFO L226 Difference]: Without dead ends: 119 [2023-02-18 07:11:45,574 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 [2023-02-18 07:11:45,575 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 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 [2023-02-18 07:11:45,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-18 07:11:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-02-18 07:11:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 118 states have internal predecessors, (123), 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) [2023-02-18 07:11:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2023-02-18 07:11:45,577 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 91 [2023-02-18 07:11:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:45,577 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2023-02-18 07:11:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-02-18 07:11:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2023-02-18 07:11:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-02-18 07:11:45,577 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:45,577 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:45,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 07:11:45,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash -634123741, now seen corresponding path program 1 times [2023-02-18 07:11:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413924658] [2023-02-18 07:11:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:45,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413924658] [2023-02-18 07:11:45,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413924658] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:45,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:45,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:11:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275219604] [2023-02-18 07:11:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:11:45,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:45,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:11:45,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:11:45,713 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-02-18 07:11:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:45,732 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2023-02-18 07:11:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:11:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 91 [2023-02-18 07:11:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:45,733 INFO L225 Difference]: With dead ends: 122 [2023-02-18 07:11:45,733 INFO L226 Difference]: Without dead ends: 122 [2023-02-18 07:11:45,733 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 [2023-02-18 07:11:45,734 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:45,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 70 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-18 07:11:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-02-18 07:11:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.117117117117117) internal successors, (124), 119 states have internal predecessors, (124), 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) [2023-02-18 07:11:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-02-18 07:11:45,736 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 91 [2023-02-18 07:11:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:45,736 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-02-18 07:11:45,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-02-18 07:11:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-02-18 07:11:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-18 07:11:45,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:45,736 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 07:11:45,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash 789303046, now seen corresponding path program 1 times [2023-02-18 07:11:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:45,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120369933] [2023-02-18 07:11:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-02-18 07:11:45,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120369933] [2023-02-18 07:11:45,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120369933] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128167796] [2023-02-18 07:11:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:45,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:45,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:45,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:46,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 07:11:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:46,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 07:11:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:11:46,197 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 [2023-02-18 07:11:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:46,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:46,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128167796] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:46,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:46,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-02-18 07:11:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969545649] [2023-02-18 07:11:46,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:46,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 07:11:46,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 07:11:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-02-18 07:11:46,491 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 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) [2023-02-18 07:11:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:46,670 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2023-02-18 07:11:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 07:11:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 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) Word has length 95 [2023-02-18 07:11:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:46,671 INFO L225 Difference]: With dead ends: 180 [2023-02-18 07:11:46,671 INFO L226 Difference]: Without dead ends: 180 [2023-02-18 07:11:46,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2023-02-18 07:11:46,672 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 256 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 239 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-18 07:11:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2023-02-18 07:11:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.136) internal successors, (142), 133 states have internal predecessors, (142), 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) [2023-02-18 07:11:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2023-02-18 07:11:46,674 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 95 [2023-02-18 07:11:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:46,674 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2023-02-18 07:11:46,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 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) [2023-02-18 07:11:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2023-02-18 07:11:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-18 07:11:46,675 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:46,675 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:46,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:46,879 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1301409354, now seen corresponding path program 1 times [2023-02-18 07:11:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833388094] [2023-02-18 07:11:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833388094] [2023-02-18 07:11:47,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833388094] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57520041] [2023-02-18 07:11:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:47,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:47,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 07:11:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:47,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 07:11:47,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:47,147 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 [2023-02-18 07:11:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57520041] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:47,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:47,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-02-18 07:11:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691449976] [2023-02-18 07:11:47,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:47,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:11:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:11:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:11:47,170 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2023-02-18 07:11:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:47,222 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2023-02-18 07:11:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:11:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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 96 [2023-02-18 07:11:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:47,222 INFO L225 Difference]: With dead ends: 137 [2023-02-18 07:11:47,222 INFO L226 Difference]: Without dead ends: 137 [2023-02-18 07:11:47,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:11:47,223 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:47,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-18 07:11:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2023-02-18 07:11:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 126 states have (on average 1.119047619047619) internal successors, (141), 134 states have internal predecessors, (141), 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) [2023-02-18 07:11:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2023-02-18 07:11:47,225 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 96 [2023-02-18 07:11:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:47,225 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2023-02-18 07:11:47,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2023-02-18 07:11:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2023-02-18 07:11:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-18 07:11:47,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:47,226 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:47,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:47,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash -265893408, now seen corresponding path program 1 times [2023-02-18 07:11:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:47,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468469037] [2023-02-18 07:11:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:47,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468469037] [2023-02-18 07:11:47,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468469037] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:47,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297040504] [2023-02-18 07:11:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:47,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:47,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:47,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 07:11:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:47,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:11:47,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297040504] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:47,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-18 07:11:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185415757] [2023-02-18 07:11:47,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:11:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:11:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:11:47,673 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2023-02-18 07:11:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:47,701 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2023-02-18 07:11:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:11:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 103 [2023-02-18 07:11:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:47,701 INFO L225 Difference]: With dead ends: 145 [2023-02-18 07:11:47,701 INFO L226 Difference]: Without dead ends: 145 [2023-02-18 07:11:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:11:47,702 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 157 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-18 07:11:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2023-02-18 07:11:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 134 states have (on average 1.1119402985074627) internal successors, (149), 142 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 149 transitions. [2023-02-18 07:11:47,704 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 149 transitions. Word has length 103 [2023-02-18 07:11:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 149 transitions. [2023-02-18 07:11:47,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2023-02-18 07:11:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 149 transitions. [2023-02-18 07:11:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-18 07:11:47,705 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:47,705 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:47,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-18 07:11:47,911 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1508601145, now seen corresponding path program 2 times [2023-02-18 07:11:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814227453] [2023-02-18 07:11:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-02-18 07:11:48,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:48,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814227453] [2023-02-18 07:11:48,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814227453] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:48,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304571475] [2023-02-18 07:11:48,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:11:48,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:48,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:48,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:48,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 07:11:48,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:11:48,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:48,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 07:11:48,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:11:48,438 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 [2023-02-18 07:11:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:48,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:48,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304571475] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:48,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:48,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-02-18 07:11:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333112118] [2023-02-18 07:11:48,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 07:11:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 07:11:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-02-18 07:11:48,833 INFO L87 Difference]: Start difference. First operand 143 states and 149 transitions. Second operand has 24 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:49,312 INFO L93 Difference]: Finished difference Result 257 states and 269 transitions. [2023-02-18 07:11:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 07:11:49,314 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-02-18 07:11:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:49,315 INFO L225 Difference]: With dead ends: 257 [2023-02-18 07:11:49,315 INFO L226 Difference]: Without dead ends: 257 [2023-02-18 07:11:49,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 07:11:49,316 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 723 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:49,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 366 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:11:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-18 07:11:49,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 164. [2023-02-18 07:11:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 155 states have (on average 1.1419354838709677) internal successors, (177), 163 states have internal predecessors, (177), 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) [2023-02-18 07:11:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2023-02-18 07:11:49,318 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 110 [2023-02-18 07:11:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:49,318 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2023-02-18 07:11:49,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2023-02-18 07:11:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-02-18 07:11:49,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:49,319 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:49,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:49,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-18 07:11:49,526 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -478004765, now seen corresponding path program 2 times [2023-02-18 07:11:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:49,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213285820] [2023-02-18 07:11:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213285820] [2023-02-18 07:11:49,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213285820] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772608564] [2023-02-18 07:11:49,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:11:49,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:49,649 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:49,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 07:11:49,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 07:11:49,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:49,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:11:49,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:49,785 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 [2023-02-18 07:11:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-02-18 07:11:49,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-02-18 07:11:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772608564] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:49,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-02-18 07:11:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601205440] [2023-02-18 07:11:49,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 07:11:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 07:11:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-02-18 07:11:49,918 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 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) [2023-02-18 07:11:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:50,083 INFO L93 Difference]: Finished difference Result 163 states and 171 transitions. [2023-02-18 07:11:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:11:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 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 111 [2023-02-18 07:11:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:50,085 INFO L225 Difference]: With dead ends: 163 [2023-02-18 07:11:50,085 INFO L226 Difference]: Without dead ends: 163 [2023-02-18 07:11:50,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2023-02-18 07:11:50,085 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 149 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:50,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 160 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:11:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-02-18 07:11:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-02-18 07:11:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 1.103225806451613) internal successors, (171), 162 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2023-02-18 07:11:50,088 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 111 [2023-02-18 07:11:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:50,088 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2023-02-18 07:11:50,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 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) [2023-02-18 07:11:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2023-02-18 07:11:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-18 07:11:50,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:50,089 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:50,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 07:11:50,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-02-18 07:11:50,295 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1693145504, now seen corresponding path program 2 times [2023-02-18 07:11:50,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:50,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554339811] [2023-02-18 07:11:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:50,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:50,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554339811] [2023-02-18 07:11:50,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554339811] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:50,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756125671] [2023-02-18 07:11:50,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:11:50,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:50,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:50,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 07:11:50,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:11:50,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:50,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 07:11:50,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:11:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:50,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756125671] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:11:50,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:11:50,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-02-18 07:11:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296267736] [2023-02-18 07:11:50,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:11:50,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:11:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:11:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:11:50,613 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2023-02-18 07:11:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:50,655 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2023-02-18 07:11:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:11:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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 123 [2023-02-18 07:11:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:50,656 INFO L225 Difference]: With dead ends: 163 [2023-02-18 07:11:50,656 INFO L226 Difference]: Without dead ends: 163 [2023-02-18 07:11:50,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:11:50,657 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:50,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 199 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-02-18 07:11:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-02-18 07:11:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 1.0774193548387097) internal successors, (167), 162 states have internal predecessors, (167), 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) [2023-02-18 07:11:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2023-02-18 07:11:50,659 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 123 [2023-02-18 07:11:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:50,660 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2023-02-18 07:11:50,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2023-02-18 07:11:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2023-02-18 07:11:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-02-18 07:11:50,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:50,661 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 07:11:50,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:50,866 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash 482493849, now seen corresponding path program 3 times [2023-02-18 07:11:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:50,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451858032] [2023-02-18 07:11:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-18 07:11:51,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:11:51,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451858032] [2023-02-18 07:11:51,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451858032] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:11:51,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816948457] [2023-02-18 07:11:51,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:11:51,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:51,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:11:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 07:11:51,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 07:11:51,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:11:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 07:11:51,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:11:51,179 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 [2023-02-18 07:11:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-02-18 07:11:51,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:11:51,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816948457] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:51,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:11:51,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 19 [2023-02-18 07:11:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399928797] [2023-02-18 07:11:51,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:51,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:11:51,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:11:51,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:11:51,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-02-18 07:11:51,233 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-02-18 07:11:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:11:51,289 INFO L93 Difference]: Finished difference Result 162 states and 166 transitions. [2023-02-18 07:11:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:11:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 140 [2023-02-18 07:11:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:11:51,290 INFO L225 Difference]: With dead ends: 162 [2023-02-18 07:11:51,290 INFO L226 Difference]: Without dead ends: 162 [2023-02-18 07:11:51,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-02-18 07:11:51,291 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:11:51,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 97 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:11:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-18 07:11:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2023-02-18 07:11:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 154 states have (on average 1.0714285714285714) internal successors, (165), 160 states have internal predecessors, (165), 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) [2023-02-18 07:11:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2023-02-18 07:11:51,298 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 140 [2023-02-18 07:11:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:11:51,299 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2023-02-18 07:11:51,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-02-18 07:11:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2023-02-18 07:11:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-02-18 07:11:51,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:11:51,300 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:51,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-18 07:11:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:11:51,509 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-02-18 07:11:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1282766496, now seen corresponding path program 3 times [2023-02-18 07:11:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:11:51,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914310886] [2023-02-18 07:11:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:11:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 07:11:51,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 07:11:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 07:11:51,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 07:11:51,703 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 07:11:51,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-02-18 07:11:51,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-02-18 07:11:51,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-02-18 07:11:51,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-02-18 07:11:51,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2023-02-18 07:11:51,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-18 07:11:51,710 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:11:51,714 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 07:11:51,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:11:51 BoogieIcfgContainer [2023-02-18 07:11:51,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 07:11:51,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 07:11:51,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 07:11:51,795 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 07:11:51,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:38" (3/4) ... [2023-02-18 07:11:51,797 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 07:11:51,864 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 07:11:51,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 07:11:51,865 INFO L158 Benchmark]: Toolchain (without parser) took 14368.32ms. Allocated memory was 172.0MB in the beginning and 371.2MB in the end (delta: 199.2MB). Free memory was 126.2MB in the beginning and 215.4MB in the end (delta: -89.3MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,865 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory was 144.9MB in the beginning and 144.7MB in the end (delta: 176.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:11:51,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.07ms. Allocated memory is still 172.0MB. Free memory was 125.9MB in the beginning and 115.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.95ms. Allocated memory is still 172.0MB. Free memory was 115.7MB in the beginning and 113.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,867 INFO L158 Benchmark]: Boogie Preprocessor took 37.51ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 112.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,868 INFO L158 Benchmark]: RCFGBuilder took 379.55ms. Allocated memory is still 172.0MB. Free memory was 112.1MB in the beginning and 98.0MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,869 INFO L158 Benchmark]: TraceAbstraction took 13666.67ms. Allocated memory was 172.0MB in the beginning and 371.2MB in the end (delta: 199.2MB). Free memory was 97.4MB in the beginning and 224.9MB in the end (delta: -127.5MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,869 INFO L158 Benchmark]: Witness Printer took 69.68ms. Allocated memory is still 371.2MB. Free memory was 224.9MB in the beginning and 215.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 07:11:51,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory was 144.9MB in the beginning and 144.7MB in the end (delta: 176.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.07ms. Allocated memory is still 172.0MB. Free memory was 125.9MB in the beginning and 115.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.95ms. Allocated memory is still 172.0MB. Free memory was 115.7MB in the beginning and 113.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.51ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 112.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.55ms. Allocated memory is still 172.0MB. Free memory was 112.1MB in the beginning and 98.0MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13666.67ms. Allocated memory was 172.0MB in the beginning and 371.2MB in the end (delta: 199.2MB). Free memory was 97.4MB in the beginning and 224.9MB in the end (delta: -127.5MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Witness Printer took 69.68ms. Allocated memory is still 371.2MB. Free memory was 224.9MB in the beginning and 215.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. 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: [L6] static int array[10]; [L17] static int numbers2[10]; [L36] static int numbers4[10]; VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L45] CALL getNumbers4() [L35] CALL, EXPR getNumbers3() [L25] CALL, EXPR getNumbers2() [L16] CALL, EXPR getNumbers() [L8] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L8] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L12] return array; VAL [\result={1:0}, array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L16] RET, EXPR getNumbers() [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={1:0}, i=0, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=0] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=0] [L18] ++i VAL [array={1:0}, i=1, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=1] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=1] [L18] ++i VAL [array={1:0}, i=2, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=2] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=2] [L18] ++i VAL [array={1:0}, i=3, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=3] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=3] [L18] ++i VAL [array={1:0}, i=4, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=4] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=4] [L18] ++i VAL [array={1:0}, i=5, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=5] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=5] [L18] ++i VAL [array={1:0}, i=6, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=6] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=6] [L18] ++i VAL [array={1:0}, i=7, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=7] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=7] [L18] ++i VAL [array={1:0}, i=8, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=8] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=8] [L18] ++i VAL [array={1:0}, i=9, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=9] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={2:0}, numbers4={3:0}, numbers[i]=9] [L18] ++i VAL [array={1:0}, i=10, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L21] return numbers2; VAL [\result={2:0}, array={1:0}, i=10, numbers={1:0}, numbers2={2:0}, numbers4={3:0}] [L25] RET, EXPR getNumbers2() [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={1:0}, i=0, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=0, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=0] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=0, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=0] [L27] ++i VAL [array={1:0}, i=1, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=1, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=1] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=1, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=1] [L27] ++i VAL [array={1:0}, i=2, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=2, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=2] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=2, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=2] [L27] ++i VAL [array={1:0}, i=3, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=3, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=3] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=3, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=3] [L27] ++i VAL [array={1:0}, i=4, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=4, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=4] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=4, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=4] [L27] ++i VAL [array={1:0}, i=5, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=5, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=5] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=5, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=5] [L27] ++i VAL [array={1:0}, i=6, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=6, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=6] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=6, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=6] [L27] ++i VAL [array={1:0}, i=7, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=7, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=7] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=7, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=7] [L27] ++i VAL [array={1:0}, i=8, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=8, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=8] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=8, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=8] [L27] ++i VAL [array={1:0}, i=9, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=9, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=9] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=9, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers[i]=9] [L27] ++i VAL [array={1:0}, i=10, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L27] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers={2:0}, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}] [L31] return numbers3; [L31] return numbers3; VAL [\result={10:0}, array={1:0}, i=10, numbers={2:0}, numbers2={2:0}, numbers4={3:0}] [L35] RET, EXPR getNumbers3() [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={1:0}, i=0, numbers={10:0}, numbers2={2:0}, numbers4={3:0}] [L37] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers={10:0}, numbers2={2:0}, numbers4={3:0}] [L38] numbers[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 43]: 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, 53 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 13.5s, OverallIterations: 26, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3331 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3331 mSDsluCounter, 3364 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2451 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2448 IncrementalHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 913 mSDtfsCounter, 2448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2284 GetRequests, 1947 SyntacticMatches, 28 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=22, InterpolantAutomatonStates: 199, 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, 25 MinimizatonAttempts, 182 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2985 NumberOfCodeBlocks, 2646 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 3723 ConstructedInterpolants, 174 QuantifiedInterpolants, 45985 SizeOfPredicates, 39 NumberOfNonLiveVariables, 3509 ConjunctsInSsa, 203 ConjunctsInUnsatCore, 53 InterpolantComputations, 12 PerfectInterpolantSequences, 13197/14234 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! [2023-02-18 07:11:51,892 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)