./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-buckets-1.i --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/forester-heap/sll-buckets-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:16:21,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:16:21,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:16:21,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:16:21,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:16:21,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:16:21,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:16:21,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:16:21,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:16:21,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:16:21,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:16:21,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:16:21,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:16:21,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:16:21,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:16:21,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:16:21,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:16:21,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:16:21,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:16:21,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:16:21,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:16:21,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:16:21,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:16:21,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:16:21,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:16:21,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:16:21,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:16:21,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:16:21,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:16:21,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:16:21,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:16:21,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:16:21,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:16:21,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:16:21,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:16:21,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:16:21,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:16:21,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:16:21,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:16:21,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:16:21,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:16:21,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 03:16:21,188 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:16:21,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:16:21,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:16:21,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:16:21,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:16:21,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:16:21,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:16:21,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:16:21,191 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:16:21,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:16:21,191 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:16:21,192 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:16:21,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:16:21,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:16:21,193 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:16:21,193 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:16:21,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:16:21,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:16:21,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:16:21,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:16:21,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:16:21,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:16:21,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:16:21,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:16:21,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:16:21,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:16:21,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:16:21,195 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:16:21,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2023-02-17 03:16:21,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:16:21,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:16:21,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:16:21,397 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:16:21,398 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:16:21,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-02-17 03:16:22,432 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:16:22,605 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:16:22,606 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-02-17 03:16:22,613 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ee8a5d4/69811c4dfda143b584c9b57db42f556f/FLAGf9b85afb7 [2023-02-17 03:16:22,634 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ee8a5d4/69811c4dfda143b584c9b57db42f556f [2023-02-17 03:16:22,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:16:22,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:16:22,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:16:22,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:16:22,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:16:22,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:16:22" (1/1) ... [2023-02-17 03:16:22,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f4e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:22, skipping insertion in model container [2023-02-17 03:16:22,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:16:22" (1/1) ... [2023-02-17 03:16:22,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:16:22,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:16:22,897 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2023-02-17 03:16:22,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2023-02-17 03:16:22,904 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2023-02-17 03:16:22,909 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2023-02-17 03:16:22,912 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2023-02-17 03:16:22,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:16:22,924 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:16:22,970 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2023-02-17 03:16:22,973 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2023-02-17 03:16:22,974 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2023-02-17 03:16:22,983 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2023-02-17 03:16:22,984 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2023-02-17 03:16:22,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:16:23,009 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:16:23,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23 WrapperNode [2023-02-17 03:16:23,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:16:23,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:16:23,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:16:23,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:16:23,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,042 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 161 [2023-02-17 03:16:23,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:16:23,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:16:23,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:16:23,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:16:23,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:16:23,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:16:23,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:16:23,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:16:23,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (1/1) ... [2023-02-17 03:16:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:16:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:23,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 03:16:23,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 03:16:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 03:16:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 03:16:23,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:16:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:16:23,263 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:16:23,277 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:16:23,645 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:16:23,650 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:16:23,655 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-17 03:16:23,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:16:23 BoogieIcfgContainer [2023-02-17 03:16:23,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:16:23,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:16:23,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:16:23,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:16:23,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:16:22" (1/3) ... [2023-02-17 03:16:23,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c30c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:16:23, skipping insertion in model container [2023-02-17 03:16:23,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:23" (2/3) ... [2023-02-17 03:16:23,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c30c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:16:23, skipping insertion in model container [2023-02-17 03:16:23,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:16:23" (3/3) ... [2023-02-17 03:16:23,664 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2023-02-17 03:16:23,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:16:23,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2023-02-17 03:16:23,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:16:23,727 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;@72f59d7e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:16:23,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-02-17 03:16:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 82 states have (on average 2.2195121951219514) internal successors, (182), 154 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-17 03:16:23,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:23,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-17 03:16:23,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-17 03:16:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:23,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167485061] [2023-02-17 03:16:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:23,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:23,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167485061] [2023-02-17 03:16:23,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167485061] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:23,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:23,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332763503] [2023-02-17 03:16:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:23,962 INFO L87 Difference]: Start difference. First operand has 155 states, 82 states have (on average 2.2195121951219514) internal successors, (182), 154 states have internal predecessors, (182), 0 states have call successors, (0), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:24,117 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2023-02-17 03:16:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-02-17 03:16:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:24,133 INFO L225 Difference]: With dead ends: 190 [2023-02-17 03:16:24,133 INFO L226 Difference]: Without dead ends: 186 [2023-02-17 03:16:24,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:24,138 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 141 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:24,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 120 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-02-17 03:16:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2023-02-17 03:16:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 81 states have (on average 1.9259259259259258) internal successors, (156), 148 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2023-02-17 03:16:24,179 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 3 [2023-02-17 03:16:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:24,180 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2023-02-17 03:16:24,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2023-02-17 03:16:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-17 03:16:24,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:24,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-17 03:16:24,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:16:24,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-17 03:16:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:24,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896329293] [2023-02-17 03:16:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:24,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:24,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896329293] [2023-02-17 03:16:24,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896329293] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:24,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:24,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:24,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634288818] [2023-02-17 03:16:24,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:24,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:24,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:24,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:24,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:24,305 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:24,424 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2023-02-17 03:16:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-02-17 03:16:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:24,426 INFO L225 Difference]: With dead ends: 185 [2023-02-17 03:16:24,426 INFO L226 Difference]: Without dead ends: 185 [2023-02-17 03:16:24,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:24,427 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 70 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:24,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 190 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-02-17 03:16:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2023-02-17 03:16:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 81 states have (on average 1.876543209876543) internal successors, (152), 144 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 152 transitions. [2023-02-17 03:16:24,436 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 152 transitions. Word has length 3 [2023-02-17 03:16:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:24,436 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 152 transitions. [2023-02-17 03:16:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 152 transitions. [2023-02-17 03:16:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 03:16:24,437 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:24,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:24,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:16:24,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1113924362, now seen corresponding path program 1 times [2023-02-17 03:16:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:24,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098541423] [2023-02-17 03:16:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:24,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:24,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098541423] [2023-02-17 03:16:24,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098541423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:24,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:24,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674922422] [2023-02-17 03:16:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:24,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:24,598 INFO L87 Difference]: Start difference. First operand 145 states and 152 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:24,790 INFO L93 Difference]: Finished difference Result 151 states and 159 transitions. [2023-02-17 03:16:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:16:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 03:16:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:24,791 INFO L225 Difference]: With dead ends: 151 [2023-02-17 03:16:24,791 INFO L226 Difference]: Without dead ends: 151 [2023-02-17 03:16:24,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:16:24,792 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 99 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:24,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 305 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-17 03:16:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2023-02-17 03:16:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.7555555555555555) internal successors, (158), 142 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2023-02-17 03:16:24,797 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 10 [2023-02-17 03:16:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2023-02-17 03:16:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2023-02-17 03:16:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 03:16:24,798 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:24,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:16:24,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1113924363, now seen corresponding path program 1 times [2023-02-17 03:16:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:24,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417554499] [2023-02-17 03:16:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:24,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:24,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417554499] [2023-02-17 03:16:24,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417554499] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:24,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:24,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:24,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136028700] [2023-02-17 03:16:24,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:24,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:24,906 INFO L87 Difference]: Start difference. First operand 143 states and 158 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:25,076 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2023-02-17 03:16:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:16:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 03:16:25,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:25,077 INFO L225 Difference]: With dead ends: 139 [2023-02-17 03:16:25,077 INFO L226 Difference]: Without dead ends: 139 [2023-02-17 03:16:25,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:16:25,078 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 8 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:25,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 416 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-17 03:16:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-02-17 03:16:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.711111111111111) internal successors, (154), 138 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2023-02-17 03:16:25,085 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 10 [2023-02-17 03:16:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:25,085 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2023-02-17 03:16:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2023-02-17 03:16:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 03:16:25,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:25,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:16:25,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 592229104, now seen corresponding path program 1 times [2023-02-17 03:16:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630620059] [2023-02-17 03:16:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:25,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630620059] [2023-02-17 03:16:25,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630620059] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:25,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:25,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:25,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902651026] [2023-02-17 03:16:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:25,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:25,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:25,186 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:25,387 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2023-02-17 03:16:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-17 03:16:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:25,391 INFO L225 Difference]: With dead ends: 146 [2023-02-17 03:16:25,391 INFO L226 Difference]: Without dead ends: 146 [2023-02-17 03:16:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:16:25,395 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 94 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:25,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 297 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-17 03:16:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2023-02-17 03:16:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.7) internal successors, (153), 137 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2023-02-17 03:16:25,399 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 17 [2023-02-17 03:16:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:25,400 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2023-02-17 03:16:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2023-02-17 03:16:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 03:16:25,401 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:25,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:25,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 03:16:25,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 592229105, now seen corresponding path program 1 times [2023-02-17 03:16:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:25,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370195363] [2023-02-17 03:16:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:25,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:25,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370195363] [2023-02-17 03:16:25,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370195363] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:25,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:25,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:25,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346245418] [2023-02-17 03:16:25,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:25,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:25,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:25,590 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:25,743 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2023-02-17 03:16:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-17 03:16:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:25,744 INFO L225 Difference]: With dead ends: 138 [2023-02-17 03:16:25,745 INFO L226 Difference]: Without dead ends: 138 [2023-02-17 03:16:25,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:16:25,745 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 8 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:25,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 403 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-17 03:16:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2023-02-17 03:16:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 90 states have (on average 1.6666666666666667) internal successors, (150), 134 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2023-02-17 03:16:25,750 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 17 [2023-02-17 03:16:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:25,750 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2023-02-17 03:16:25,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2023-02-17 03:16:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 03:16:25,750 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:25,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 03:16:25,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 840457529, now seen corresponding path program 1 times [2023-02-17 03:16:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027435253] [2023-02-17 03:16:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:25,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027435253] [2023-02-17 03:16:25,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027435253] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:25,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:25,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078061593] [2023-02-17 03:16:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:25,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:25,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:25,844 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:25,914 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2023-02-17 03:16:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-17 03:16:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:25,916 INFO L225 Difference]: With dead ends: 141 [2023-02-17 03:16:25,916 INFO L226 Difference]: Without dead ends: 141 [2023-02-17 03:16:25,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:25,917 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 67 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:25,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 143 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-17 03:16:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 130. [2023-02-17 03:16:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.6111111111111112) internal successors, (145), 129 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2023-02-17 03:16:25,921 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 23 [2023-02-17 03:16:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:25,921 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2023-02-17 03:16:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2023-02-17 03:16:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 03:16:25,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:25,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:25,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 03:16:25,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash 840457530, now seen corresponding path program 1 times [2023-02-17 03:16:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:25,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644976467] [2023-02-17 03:16:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644976467] [2023-02-17 03:16:26,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644976467] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:26,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:26,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:26,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866523261] [2023-02-17 03:16:26,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:26,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:26,039 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:26,098 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2023-02-17 03:16:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-17 03:16:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:26,100 INFO L225 Difference]: With dead ends: 136 [2023-02-17 03:16:26,100 INFO L226 Difference]: Without dead ends: 136 [2023-02-17 03:16:26,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:26,104 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 62 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:26,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 144 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-17 03:16:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2023-02-17 03:16:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2023-02-17 03:16:26,109 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 23 [2023-02-17 03:16:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:26,109 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2023-02-17 03:16:26,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2023-02-17 03:16:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:16:26,110 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:26,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:26,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 03:16:26,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 225913191, now seen corresponding path program 1 times [2023-02-17 03:16:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514701126] [2023-02-17 03:16:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514701126] [2023-02-17 03:16:26,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514701126] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:26,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:26,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065367099] [2023-02-17 03:16:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:26,222 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:26,359 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2023-02-17 03:16:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:16:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-17 03:16:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:26,361 INFO L225 Difference]: With dead ends: 175 [2023-02-17 03:16:26,361 INFO L226 Difference]: Without dead ends: 175 [2023-02-17 03:16:26,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:26,362 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 218 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:26,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 162 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-17 03:16:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2023-02-17 03:16:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 131 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 152 transitions. [2023-02-17 03:16:26,364 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 152 transitions. Word has length 25 [2023-02-17 03:16:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 152 transitions. [2023-02-17 03:16:26,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 152 transitions. [2023-02-17 03:16:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:16:26,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:26,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:26,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 03:16:26,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash 225913192, now seen corresponding path program 1 times [2023-02-17 03:16:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240970356] [2023-02-17 03:16:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:26,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240970356] [2023-02-17 03:16:26,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240970356] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:26,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:26,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:16:26,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183533453] [2023-02-17 03:16:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:26,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:16:26,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:16:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:26,502 INFO L87 Difference]: Start difference. First operand 132 states and 152 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:26,724 INFO L93 Difference]: Finished difference Result 226 states and 250 transitions. [2023-02-17 03:16:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:16:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-17 03:16:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:26,726 INFO L225 Difference]: With dead ends: 226 [2023-02-17 03:16:26,726 INFO L226 Difference]: Without dead ends: 226 [2023-02-17 03:16:26,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:16:26,729 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 252 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:26,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 246 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-02-17 03:16:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 170. [2023-02-17 03:16:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 135 states have (on average 1.548148148148148) internal successors, (209), 169 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 209 transitions. [2023-02-17 03:16:26,734 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 209 transitions. Word has length 25 [2023-02-17 03:16:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:26,735 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 209 transitions. [2023-02-17 03:16:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 209 transitions. [2023-02-17 03:16:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:16:26,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:26,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 03:16:26,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1586624732, now seen corresponding path program 1 times [2023-02-17 03:16:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187050278] [2023-02-17 03:16:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187050278] [2023-02-17 03:16:26,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187050278] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:26,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:26,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560462803] [2023-02-17 03:16:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:16:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:16:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:16:26,781 INFO L87 Difference]: Start difference. First operand 170 states and 209 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:26,841 INFO L93 Difference]: Finished difference Result 210 states and 242 transitions. [2023-02-17 03:16:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:16:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-17 03:16:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:26,842 INFO L225 Difference]: With dead ends: 210 [2023-02-17 03:16:26,842 INFO L226 Difference]: Without dead ends: 210 [2023-02-17 03:16:26,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:26,843 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 189 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:26,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 217 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-02-17 03:16:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 168. [2023-02-17 03:16:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 134 states have (on average 1.5298507462686568) internal successors, (205), 167 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 205 transitions. [2023-02-17 03:16:26,846 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 205 transitions. Word has length 26 [2023-02-17 03:16:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:26,846 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 205 transitions. [2023-02-17 03:16:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 205 transitions. [2023-02-17 03:16:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 03:16:26,847 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:26,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 03:16:26,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1044883735, now seen corresponding path program 1 times [2023-02-17 03:16:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124932423] [2023-02-17 03:16:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:27,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:27,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124932423] [2023-02-17 03:16:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124932423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:27,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:27,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-02-17 03:16:27,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675822638] [2023-02-17 03:16:27,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 03:16:27,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 03:16:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:16:27,229 INFO L87 Difference]: Start difference. First operand 168 states and 205 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:27,709 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2023-02-17 03:16:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-17 03:16:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-02-17 03:16:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:27,710 INFO L225 Difference]: With dead ends: 198 [2023-02-17 03:16:27,710 INFO L226 Difference]: Without dead ends: 198 [2023-02-17 03:16:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2023-02-17 03:16:27,711 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 203 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:27,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 688 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:16:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-17 03:16:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2023-02-17 03:16:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 141 states have (on average 1.4822695035460993) internal successors, (209), 173 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2023-02-17 03:16:27,714 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 29 [2023-02-17 03:16:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:27,714 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2023-02-17 03:16:27,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2023-02-17 03:16:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 03:16:27,714 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:27,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 03:16:27,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 981328753, now seen corresponding path program 1 times [2023-02-17 03:16:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:27,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729249934] [2023-02-17 03:16:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:27,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729249934] [2023-02-17 03:16:27,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729249934] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:27,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:27,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278647558] [2023-02-17 03:16:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:27,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:27,748 INFO L87 Difference]: Start difference. First operand 174 states and 209 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:27,764 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2023-02-17 03:16:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:27,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-17 03:16:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:27,765 INFO L225 Difference]: With dead ends: 172 [2023-02-17 03:16:27,765 INFO L226 Difference]: Without dead ends: 172 [2023-02-17 03:16:27,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:27,766 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:27,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:16:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-02-17 03:16:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-02-17 03:16:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 171 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 207 transitions. [2023-02-17 03:16:27,769 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 207 transitions. Word has length 31 [2023-02-17 03:16:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:27,769 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 207 transitions. [2023-02-17 03:16:27,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 207 transitions. [2023-02-17 03:16:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 03:16:27,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:27,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 03:16:27,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 873646240, now seen corresponding path program 1 times [2023-02-17 03:16:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:27,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769198547] [2023-02-17 03:16:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769198547] [2023-02-17 03:16:27,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769198547] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:27,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:27,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7890908] [2023-02-17 03:16:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:27,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:16:27,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:16:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:16:27,827 INFO L87 Difference]: Start difference. First operand 172 states and 207 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:27,908 INFO L93 Difference]: Finished difference Result 209 states and 238 transitions. [2023-02-17 03:16:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:16:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-17 03:16:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:27,910 INFO L225 Difference]: With dead ends: 209 [2023-02-17 03:16:27,910 INFO L226 Difference]: Without dead ends: 209 [2023-02-17 03:16:27,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:27,911 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 170 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:27,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 216 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-02-17 03:16:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2023-02-17 03:16:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 142 states have (on average 1.471830985915493) internal successors, (209), 173 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2023-02-17 03:16:27,916 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 35 [2023-02-17 03:16:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:27,917 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2023-02-17 03:16:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:16:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2023-02-17 03:16:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 03:16:27,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:27,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:27,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 03:16:27,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2023-02-17 03:16:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash 124937643, now seen corresponding path program 1 times [2023-02-17 03:16:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:27,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198051318] [2023-02-17 03:16:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:28,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198051318] [2023-02-17 03:16:28,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198051318] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:28,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258214082] [2023-02-17 03:16:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:28,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:28,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:16:28,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:16:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:28,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-17 03:16:28,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:28,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:16:28,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:16:28,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 03:16:28,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 16 [2023-02-17 03:16:28,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 16 [2023-02-17 03:16:28,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-17 03:16:28,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-02-17 03:16:28,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 114 [2023-02-17 03:16:29,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-02-17 03:16:29,014 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 03:16:29,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 89 [2023-02-17 03:16:29,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 83 [2023-02-17 03:16:29,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 90 case distinctions, treesize of input 689 treesize of output 1383